[Bug 1094278] Re: cu doesn't connect properly to a serial console
** Changed in: uucp (Debian) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
neat confirmation - it's 2015, and this bug is from 1995. Seemingly no- one has had a need for a serial line in the last two decades :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
neat confirmation - it's 2015, and this bug is from 1995. Seemingly no- one has had a need for a serial line in the last two decades :) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to uucp in Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
This used to work fine. I thought it was a bug in the pl2303 driver, but it's definitly this issue. Look at stty output while cu running, shows rtscts enabled. After adding /etc/uucp/port file, with tcp options, cu works fine, rtscts disabled. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
This used to work fine. I thought it was a bug in the pl2303 driver, but it's definitly this issue. Look at stty output while cu running, shows rtscts enabled. After adding /etc/uucp/port file, with tcp options, cu works fine, rtscts disabled. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to uucp in Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
There are two issues here: cu randomly identifies the serial connection as dialin (nortscts) ot dialout (rtscts). I don't care about that distinction being broken. I fix that with the patch. The other problem is 'line in use' which is caused by running cu as root. The permission issues are discussed above. You need to add yourself to whatever group cu is owned by and run as non-root user and/or change the permissions to make the device nodes owned by whatever is cu suid to. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to uucp in Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
There are two issues here: cu randomly identifies the serial connection as dialin (nortscts) ot dialout (rtscts). I don't care about that distinction being broken. I fix that with the patch. The other problem is 'line in use' which is caused by running cu as root. The permission issues are discussed above. You need to add yourself to whatever group cu is owned by and run as non-root user and/or change the permissions to make the device nodes owned by whatever is cu suid to. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
i have hard time of the issue. i tried with many way including which figured out above. after the patch but cu tells following, ./cu: mkdir (/usr/spool): Permission denied ./cu: /dev/ttyS0: Line in use for the patch, i download uucp 1.07 source from http://airs.com/ian/uucp.html and fixed sources pointed and compiled successfully. i have tried on many way such as changing owner or group with uucp, dialout or root. but same result. It works good with using usb to serial converter. but not for the serial cable on serial card(for me, System base single port PCI card). I have the success only under windows Teraterm program. I desire to work with cu on linux as soon as. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to uucp in Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
i have hard time of the issue. i tried with many way including which figured out above. after the patch but cu tells following, ./cu: mkdir (/usr/spool): Permission denied ./cu: /dev/ttyS0: Line in use for the patch, i download uucp 1.07 source from http://airs.com/ian/uucp.html and fixed sources pointed and compiled successfully. i have tried on many way such as changing owner or group with uucp, dialout or root. but same result. It works good with using usb to serial converter. but not for the serial cable on serial card(for me, System base single port PCI card). I have the success only under windows Teraterm program. I desire to work with cu on linux as soon as. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
patch http://bugs.debian.org/cgi- bin/bugreport.cgi?msg=15;filename=flow.patch;att=1;bug=336996 ** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to uucp in Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
patch http://bugs.debian.org/cgi- bin/bugreport.cgi?msg=15;filename=flow.patch;att=1;bug=336996 ** Tags added: patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
i've glanced at the code: in case of TCP, hardware flow control is not set explicitely (in other cases, it is set). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
the following might have been relevant: Bug #255200 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
to rule out anything related to permissions, i did: $ sudo ls -al /dev/ttyS0 crw-rw 1 root dialout 4, 64 Dec 31 09:21 /dev/ttyS0 $ sudo chmod 0666 /dev/ttyS0 $ sudo chown koen:dialout /dev/ttyS0 $ sudo ls -al /dev/ttyS0 crw-rw-rw- 1 koen dialout 4, 64 Dec 31 10:15 /dev/ttyS0 which shouldn't make any difference, and didn't make any difference... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
the differences in terminal setting between a working configuration (openbsd) and a non-working configuration (xubuntu) on the same hardware; only the differences are shown, similar flags are left out: # openbsd cchars: discard = ^O; dsusp = ^Y; status = undef; time = 0 cflags: -crtscts -mdmbuf oflags: opost oxtabs -onoeot lflags: icanon isig iexten echo echoe -altwerase -flusho -pendin -nokerninfo -extproc iflags: -istrip icrnl ixon ixany imaxbel brkint # xubuntu cchars: line = 0; swtch = undef; flush = ^O; time = 1 cflags: crtscts oflags: -opost -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 lflags: -isig -icanon -iexten -echo -echoe iflags: -brkint istrip -icrnl -ixon -ixany -imaxbel -iutf8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
so... rts/cts flow control is different, and flow control is not based on a carrier detect; we're missing a dsusp control character. we don't strip to 7 bits; we map carriage return to newline on input: we enable start/stop output control; we allow any character to restart outut; we impose a limit on the characters in the input queue; we signal intr on break. we post-process output; we expand tabs to spaces on output; we don't discard EOF's on output. we're processing input in canonical mode, with a time of 0; we check against special control characters; we do extened control characters if possible; we echo input; an erase character visually deletes the former character; we don't do alternative word erase; we don't discard output; we don't pend input after switching modes; we assume the hardware is not processing terminal data. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
so, i did... $ sudo stty -F /dev/ttyS0 speed 115200 115200 $ sudo stty -F /dev/ttyS0 icanon $ sudo stty -F /dev/ttyS0 isig $ sudo stty -F /dev/ttyS0 iexten $ sudo stty -F /dev/ttyS0 echo $ sudo stty -F /dev/ttyS0 echoe $ sudo stty -F /dev/ttyS0 -altwerase stty: when specifying an output style, modes may not be set $ sudo stty -F /dev/ttyS0 -pendin stty: invalid argument `-pendin' Try `stty --help' for more information. $ sudo stty -F /dev/ttyS0 -istrip $ sudo stty -F /dev/ttyS0 icrnl $ sudo stty -F /dev/ttyS0 ixon $ sudo stty -F /dev/ttyS0 ixany $ sudo stty -F /dev/ttyS0 imaxbel $ sudo stty -F /dev/ttyS0 brkint $ sudo stty -F /dev/ttyS0 opost $ sudo stty -F /dev/ttyS0 oxtabs stty: invalid argument `oxtabs' Try `stty --help' for more information. $ sudo stty -F /dev/ttyS0 -onoeot stty: invalid argument `-onoeot' Try `stty --help' for more information. $ sudo stty -F /dev/ttyS0 -crtscts $ sudo stty -F /dev/ttyS0 -mdmbuf stty: invalid argument `-mdmbuf' Try `stty --help' for more information. $ sudo stty -a -F /dev/ttyS0 speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl ixon -ixoff -iuclc ixany -imaxbel -iutf8 -opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
why aren't any settings actually set by stty?! ? let's try this without sudo... $ stty -F /dev/ttyS0 speed 115200 115200 $ stty -F /dev/ttyS0 icanon $ stty -F /dev/ttyS0 isig $ stty -F /dev/ttyS0 iexten $ stty -F /dev/ttyS0 echo $ stty -F /dev/ttyS0 echoe $ stty -F /dev/ttyS0 -istrip $ stty -F /dev/ttyS0 icrnl $ stty -F /dev/ttyS0 ixon $ stty -F /dev/ttyS0 ixany $ stty -F /dev/ttyS0 imaxbel $ stty -F /dev/ttyS0 brkint $ stty -F /dev/ttyS0 opost $ stty -F /dev/ttyS0 -crtscts $ stty -a -F /dev/ttyS0 speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal -crtscts -ignbrk brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc ixany imaxbel -iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke that looks better! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
but it still won't connect... $ cu -l /dev/ttyS0 -s 115200 --nostop Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 --nostop -e Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 --nostop -o Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 --nostop -eo Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 -e Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 -o Connected. ~. Disconnected. $ cu -l /dev/ttyS0 -s 115200 -eo Connected. ~. Disconnected. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
spot the difference! # while booted in openbsd, on the same hardware, this always works speed 115200 baud; 0 rows; 0 columns; lflags: icanon isig iexten echo echoe -echok echoke -echonl echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo -extproc -xcase iflags: -istrip icrnl -inlcr -igncr -iuclc ixon -ixoff ixany imaxbel -ignbrk brkint -inpck -ignpar -parmrk oflags: opost onlcr -ocrnl -onocr -onlret -olcuc oxtabs -onoeot cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -mdmbuf cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = undef; eol2 = undef; erase = ^?; intr = ^C; kill = ^U; lnext = ^V; min = 1; quit = ^\; reprint = ^R; start = ^Q; status = undef; stop = ^S; susp = ^Z; time = 0; werase = ^W; # while booted in xubuntu, on the same hardware, this never works speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal -crtscts -ignbrk brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc ixany imaxbel -iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke now, i could try setting a whole bunch of flags manually while trying to connect with cu, but i'm getting fed up with this... maybe later. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
after reading Bug #577433, i booted with acpi=off and tried, but it didn't make any difference... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
for what it's worth: the cable is a standard 9-pin crossover serial (DB-9)... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Hmm. Well we still don't know if the problem is cu or anything else. I doubt it's anything complex with acpi etc. For perms just do a simple chmod a+rw /dev/ttyS* (as long as you are happy with that and to fix it later and it's a single user system of course!). OK, 1st question - are you sure you're on the right serial port? Is it really /dev/ttyS0? If it is, Then minicom -D /dev/ttyS0 then ctrl-a O and go to serial port setup, check the device, and make sure it's at 115k2 8n1, disable both hardware and software flow control From the BSD box I'd then do a simple echo hello /dev/ttyWHATEVER (whatever bsd calls it) and see if the minicom sees it. If that fials I'd try enabling the getty on the BSD box and see if you see anything on the lInux box. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
minicom sees the incoming hello... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
to be clear: my serial line works fine in minicom (i can access the remote host, everything works as it should), but not with cu... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
so this works in minicom, if i disable hardware and software flow control... i put everything back as it should be: permissions are back to normal, target host has a getty... i try setting correct parameters (speed, no software flow control, no hardware flow control): $ stty -a -F /dev/ttyS0 speed 9600 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke $ stty -F /dev/ttyS0 -crtscts $ stty -F /dev/ttyS0 -ixon $ stty -F /dev/ttyS0 speed 115200 9600 $ stty -F /dev/ttyS0 speed 115200 115200 $ cu -l /dev/ttyS0 -s 115200 --nostop --parity=none Connected. ~. ^C^C^C Disconnected. $ stty -a -F /dev/ttyS0 speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal crtscts -ignbrk -brkint -ignpar -parmrk -inpck istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany -imaxbel -iutf8 -opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke apparently the flag for hardware flow control is back... $ stty -F /dev/ttyS0 -crtscts $ stty -F /dev/ttyS0 -ixon $ stty -F /dev/ttyS0 speed 115200 115200 $ stty -a -F /dev/ttyS0 speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany -imaxbel -iutf8 -opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke apparently they were set, so cu changes these? anyway, enough for tonight :) thanks for the pointers happy new year's eve! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
and this seems to be a very well known problem, that goes back a decade: http://www.google.be/search?hl=enas_q=%22cu%22+%22crtscts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
as far as i am concerned, this bugreport can be closed; apparently this was already a bug in 1995, and it has never been fixed (http://web.archiveorange.com/archive/v/iBpRaJf4WODgPva7sywW) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
from the manual of cu: BUGS This program does not work very well. :) i would love to know a workaround though; setting the flag manually with stty, while cu has a connection, is apparently not possible... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Hi Koen, Nicely found; I think the bug should stay open - I don't see a fix for it! Can you try (the apparently unrelated) fix at: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/584787 it's just creating a config file, so it should be easy to try. Ah, and I've found an ancient debian bug that's the same thing. I can link those together. ** Bug watch added: Debian Bug tracker #336996 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=336996 ** Also affects: uucp (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=336996 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Triaged: Seems to be the same as the debian bug filed in '05, and looks possible the patch linked to from NetBSD in '01 might fix it?! ** Changed in: uucp (Ubuntu) Importance: Undecided = Medium ** Changed in: uucp (Ubuntu) Status: New = Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
** Changed in: uucp (Debian) Status: Unknown = New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/584787 : this actually works... $ ls /etc/uucp total 28 drwxr-xr-x 2 root root 4096 Dec 31 23:27 . drwxr-xr-x 147 root root 12288 Dec 31 22:19 .. -rw-r--r-- 1 root uucp 461 Oct 9 01:24 config -rw-r--r-- 1 root root86 Dec 31 23:27 port -rw-r--r-- 1 root uucp 1436 Oct 9 01:24 sys $ cat /etc/uucp/port # # Description for the TCP port - pretty trivial. DON'T DELETE. # port TCP type tcp $ stty -F /dev/ttyS0 -crtscts $ stty -F /dev/ttyS0 -ixon $ stty -F /dev/ttyS0 speed 115200 115200 $ cu -l /dev/ttyS0 -s 115200 --nostop --parity=none Connected. OpenBSD/i386 (x.x.xx) (tty00) login: -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
thank you! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Huh ok, I don't quite see the relation between 584787's fix and what you're seeing; but hohum! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
me neither, but if i rename the /etc/uucp/port file, it doesn't work anymore. do you want an strace of a working example? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
No, that's ok; I've added a comment to the debian bug, and I probably won't do anything else with it; I've marked the bug as triaged and added comemnts to the others - I suspect the right thing is to add both fixes, although it probably needs someone with some time to grope around the cu code and try some experiements to find out the real underlying cause. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
on the target host (openbsd), i disabled the getty: $ sudo cat /etc/ttys|grep tty00 tty00 noneunknown off #tty00 /usr/libexec/getty std.115200 vt220 on secure on the xubuntu host, there was no getty on any ttyS: $ sudo pstree -ac|grep getty |-getty -8 38400 tty4 |-getty -8 38400 tty5 |-getty -8 38400 tty2 |-getty -8 38400 tty3 |-getty -8 38400 tty6 |-getty -8 38400 tty1 | | |-grep --color=auto getty on the target host, i have: $ sudo od -t x1 /dev/tty00 on the xubuntu host, i'm trying to send: $ sudo echo -n '1234567890'/dev/ttyS0 i usually get nothing, except 000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 followed by *; this only happens if i freshly started 'od' on the target host, and i try to send something twice. after that, the line stays dead. i can not provoke this in any other way, than starting 'od' and sending something. i don't have a breakout box and i suck at soldering, but i will ask around. thanks for your time! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
$ sudo setserial -av /dev/ttyS0 /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Hi Koen, To try and nail down whether this is cu or a kernel serial problem, have you tried: 1) Using a different serial program - e.g. minicom ? 2) use something simple like echo Hello /dev/ttyS0 Dave -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
thanks for the input! i suspect it's the kernel; i don't see why cu would be at fault - it has been working fine for decades. my apologies for attaching a bug report to 'cu', but it's the only way to get attention to this... anyway, i tried minicom. didn't work as a normal user, didn't work with sudo. fiddled with line settings, but alas... $ sudo minicom -b 115200 -t vt220 -D /dev/ttyS0 (cu starts, but apparently no connection; terminal is apparently a vt102) (the bar below says 'offline'; i need to set local echo manually if i want a display of my input) $ minicom -b 115200 -t vt220 -D /dev/ttyS0 (cu starts, but apparently no connection; terminal is apparently a vt102) (the bar below says 'offline'; i need to set local echo manually if i want a display of my input) one thing that comes to mind: the target host doesn't do utf8; can this be a problem? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
on the problematic xubuntu host, i tried... $ echo TEST/dev/ttyS0 and $ sudo echo TEST/dev/ttyS0 both gave me prompt again while on the target host, i had... $ sudo cat /dev/tty00 and $ sudo hexdump /dev/tty00 and $ sudo less -f /dev/tty00 and $ sudo od /dev/tty00 didn't display anything... one time, i got the following wit hexdump: 000 but i could not repeat this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
note: while i tried the above, the target host still had a getty on that port -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
Hi Koen, It would probably be worth retrying the things without the getty (might be worth checking there wasn't one on the xubuntu host as well!). Hmm odd; the echo is about the simplest thing to try. if retrying without the getty doesn't help; have you got a serial breakout box, or a lead with pins 2/3 connected as a loopback?My normal first test to see if I can get serial going is with something like minicom and just start typing, and put a loopback lead in, if I get the echo with the loopback lead but not without it then I know at least that end is working. I'd also normally do that test with all forms of handshaking etc disabled. Dave -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
$ cat STRACE_CU.3140
close(4)= 0
fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR)
fcntl64(3, F_SETFL, O_RDWR) = 0
rt_sigaction(SIGUSR1, {0x8051460, [], SA_INTERRUPT}, NULL, 8) = 0
rt_sigaction(SIGUSR2, {0x8051460, [], SA_INTERRUPT}, NULL, 8) = 0
rt_sigaction(SIGINT, {SIG_IGN, [], SA_INTERRUPT}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {SIG_IGN, [], SA_INTERRUPT}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {SIG_DFL, [], SA_INTERRUPT}, NULL, 8) = 0
rt_sigaction(SIGTERM, {0x8051460, [], SA_INTERRUPT}, NULL, 8) = 0
read(3, 0xbfd1be0c, 1024) = ? ERESTARTSYS (To be restarted)
--- SIGTERM (Terminated) @ 0 (0) ---
sigreturn() = ? (mask now [])
exit_group(0) = ?
** Description changed:
almost entirely default install of xubuntu 12.10; note that i'm running
a 3.7 kernel (because of Bug #1085115), but the problem is the same with
the default kernel. if i boot this box in openbsd or netbsd, cu will
connect just fine.
i need to access a terminal on another host, which is directly connected
with a serial cable.
$ sudo uname -a
- [CODE]Linux iugo 3.7.0-4-generic #12~lp1085115v1 SMP Fri Nov 30 20:57:19 UTC
2012 i686 i686 i686 GNU/Linux[/CODE]
+ Linux iugo 3.7.0-4-generic #12~lp1085115v1 SMP Fri Nov 30 20:57:19 UTC 2012
i686 i686 i686 GNU/Linux
$ sudo dmesg|grep tty
- [CODE][ 0.00] console [tty0] enabled
+ [ 0.00] console [tty0] enabled
[ 0.663436] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
- [ 0.683785] 00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A[/CODE]
+ [ 0.683785] 00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
i am assuming a standard 16550 uart buffer is handled by the main
kernel, and hardware support is not at issue here.
$ sudo ls -al /dev/ttyS?
- [CODE]crw-rw 1 root dialout 4, 64 Dec 8 10:05 /dev/ttyS0
+ crw-rw 1 root dialout 4, 64 Dec 8 10:05 /dev/ttyS0
crw-rw 1 root dialout 4, 65 Dec 8 10:05 /dev/ttyS1
crw-rw 1 root dialout 4, 66 Dec 8 10:05 /dev/ttyS2
crw-rw 1 root dialout 4, 67 Dec 8 10:05 /dev/ttyS3
crw-rw 1 root dialout 4, 68 Dec 8 10:05 /dev/ttyS4
crw-rw 1 root dialout 4, 69 Dec 8 10:05 /dev/ttyS5
crw-rw 1 root dialout 4, 70 Dec 8 10:05 /dev/ttyS6
crw-rw 1 root dialout 4, 71 Dec 8 10:05 /dev/ttyS7
crw-rw 1 root dialout 4, 72 Dec 8 10:05 /dev/ttyS8
- crw-rw 1 root dialout 4, 73 Dec 8 10:05 /dev/ttyS9[/CODE]
+ crw-rw 1 root dialout 4, 73 Dec 8 10:05 /dev/ttyS9
$ sudo cat /proc/tty/driver/serial
- [CODE]serinfo:1.0 driver revision:
+ serinfo:1.0 driver revision:
0: uart:16550A port:03F8 irq:4 tx:0 rx:0 DSR
- 1: uart:16550A port:02F8 irq:3 tx:0 rx:0[/CODE]
+ 1: uart:16550A port:02F8 irq:3 tx:0 rx:0
$ sudo cat /etc/group|grep koen
- [CODE]adm:x:4:koen
+ adm:x:4:koen
tty:x:5:koen,root
uucp:x:10:koen,root
dialout:x:20:koen,root
cdrom:x:24:koen
sudo:x:27:koen
audio:x:29:pulse,koen
dip:x:30:koen
video:x:44:koen
plugdev:x:46:koen
fuse:x:104:koen
lpadmin:x:107:koen
scanner:x:116:koen
- koen:x:1000:[/CODE]
+ koen:x:1000:
$ sudo which cu
- [CODE]/usr/bin/cu[/CODE]
+ /usr/bin/cu
$ cu -l /dev/ttyS0 -s 115200
- [CODE]Connected.[/CODE]
- note that cu always says Connected., this doesn't mean anything; also note
that the baudrate, parity, et cetera... are correct; the cable is healthy and
connected to the right serial port.
+ Connected.
+
+ note that cu always says Connected., this doesn't mean anything; also
+ note that the baudrate, parity, et cetera... are correct; the cable is
+ healthy and connected to the right serial port.
$ sudo cu -l /dev/ttyS0 -s 115200
- [CODE]/usr/bin/cu: open (/dev/ttyS0): Permission denied
- /usr/bin/cu: /dev/ttyS0: Line in use[/CODE]
+ /usr/bin/cu: open (/dev/ttyS0): Permission denied
+ /usr/bin/cu: /dev/ttyS0: Line in use
$ sudo su -
# cu -l /dev/ttyS0 -s 115200
- [CODE]/usr/bin/cu: open (/dev/ttyS1): Permission denied
- /usr/bin/cu: /dev/ttyS1: Line in use[/CODE]
+ /usr/bin/cu: open (/dev/ttyS1): Permission denied
+ /usr/bin/cu: /dev/ttyS1: Line in use
if i make user 'root' part of the mandatory group 'dialout', it doesn't
make any difference anymore whether i try this with an uid of 0 or not.
to rule things out, i made a polkit action definition for this. logs
confirmed the action definition worked. i tried the above scenarios with
polkit's pkexec. it didn't make any difference.
to rule things out, i tried making a pam exception for this
(capabilities), by adding some lines to /etc/security/group.conf and
creating /etc/pam.d/cu. it didn't make any difference, but i'm not sure
my pam configuration was entirely correct.
to rule things out, i started fiddling with /bin/stty (which shouldn't
be needed). it didn't make any difference. for the record:
$ sudo stty -a
- [CODE]speed 38400 baud; rows 43; columns 124; line = 0;
+ speed 38400 baud; rows 43;
[Bug 1094278] Re: cu doesn't connect properly to a serial console
for what it's worth: to make sure this wasn't a polkit thing, i made an action definition for this, and dropped it in /etc/polkit-1/actions: ?xml version=1.0 encoding=UTF-8? !DOCTYPE policyconfig PUBLIC -//freedesktop//DTD PolicyKit Policy Configuration 1.0//ENhttp://www.freedesktop.org/standards/PolicyKit/1.0/policyconfig.dtd; policyconfig action id=org.freedesktop.policykit.exec defaults allow_activeyes/allow_active /defaults annotate key=org.freedesktop.policykit.exec.path/usr/bin/cu/annotate annotate key=org.freedesktop.policykit.exec.argv1-l /dev/ttyS0 -s 115200/annotate annotate key=org.freedesktop.policykit.imply true/annotate annotate key=org.freedesktop.policykit.ownerunix-user:ummelum/annotate /action /policyconfig i ran it... $ exec /usr/bin/pkexec --user ummelum /usr/bin/cu -l /dev/ttyS0 -s 115200 but alas... according to /var/log/auth.log, the policy worked: Dec 1 22:51:54 iugo polkitd(authority=local): Operator of unix-session:/org/freedesktop/ConsoleKit/Session1 successfully authenticated as unix-user:ummelum to gain ONE-SHOT authorization for action org.freedesktop.policykit.exec for unix-process:5798:3872562 [bash] (owned by unix-user:ummelum) Dec 1 22:51:54 iugo pkexec: pam_unix(polkit-1:session): session opened for user root by ummelum(uid=1000) Dec 1 22:51:54 iugo pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device Dec 1 22:51:54 iugo pkexec[6047]: ummelum: Executing command [USER=root] [TTY=/dev/pts/0] [CWD=/home/ummelum] [COMMAND=/usr/bin/cu -l /dev/ttyS0 -s 115200] so this isn't a polkit thing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
for what it's worth: i suspected this is restricted by pam's capabilities. so i added a line to /etc/security/group.conf: cu;*;ummelum;Al-2400;dialout and created /etc/pam.d/cu: session optionalpam_permit.so i used a login-shell and tried my serial console, but alas... if i try with pkexec, from a login-shell, i get the following in /var/log/auth.log: Dec 1 23:49:02 iugo polkitd(authority=local): Unregistered Authentication Agent for unix-process:914:1133 (system bus name :1.73, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus) but, i don't think my pam-configuration is correct. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
the following bug report might be relevant: Bug #1087519 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
for what it's worth: $ ls /etc/uucp config sys $ cat /etc/uucp/config|grep -Ev '#' (nothing) $ cat sys|grep -Ev '#' protocol gvG protocol-parameter G packet-size 1024 protocol-parameter G short-packets -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1094278] Re: cu doesn't connect properly to a serial console
from the target machine (openbsd): $ sudo stty -a -f /dev/tty00 speed 115200 baud; 0 rows; 0 columns; lflags: -icanon -isig -iexten -echo -echoe -echok -echoke -echonl -echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo -extproc -xcase iflags: -istrip -icrnl -inlcr -igncr -iuclc -ixon -ixoff -ixany -imaxbel -ignbrk -brkint -inpck -ignpar -parmrk oflags: -opost onlcr -ocrnl -onocr -onlret -olcuc oxtabs -onoeot cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -mdmbuf cchars: discard = ^O; dsusp = ^Y; eof = ^D; eol = undef; eol2 = undef; erase = ^?; intr = ^C; kill = ^U; lnext = ^V; min = 1; quit = ^\; reprint = ^R; start = ^Q; status = undef; stop = ^S; susp = ^Z; time = 0; werase = ^W; from my problematic host (xubuntu): $ sudo stty -a -F /dev/ttyS0 speed 115200 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = undef; eol2 = undef; swtch = undef; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 1; -parenb -parodd cs8 hupcl -cstopb cread -clocal crtscts -ignbrk -brkint -ignpar -parmrk -inpck istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany -imaxbel -iutf8 -opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094278 Title: cu doesn't connect properly to a serial console To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uucp/+bug/1094278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
