Re: console no responding to key in.
On Thu, 15 Apr 2010 14:15:24 -0700, Chuck Swiger cswi...@mac.com wrote: On Apr 15, 2010, at 1:26 PM, Jessie Xu wrote: I must fix the problem since I need console login with root. Any insight on this? thanks. Our machines are Dell PowerEdge 2650 (2U rack mountable) , come with Video port, PS2 keyboard/Mouse ports, and two Serial ports. -- I also tried the serial ports for console access, no lucky. PS/2 isn't a hot-pluggable interface. On older hardware, you can blow a fuse on the motherboard by trying to do so while the machine is on, although newer equipment uses a polyfuse (aka PPTC or resettable fuse) to avoid permanent damage. An important advice! If there was no keyboard there initially, then the hardware may never attempt to use one added later, short of a power-cycle. If there was no atkbd: at boot time, attaching it later on will not introduce it to the system. As you said, Chuck, it may even destroy hardware to try to do so, leading to the fact that you have a server with *no* AT keyboard at all. I've already seen that with older systems not using a resettable fuse. In such cases, trying a USB keyboard instead might work better. Jessie Xu initially said he was on FreeBSD 4. If I remember correctly, what you suggest isn't possible in the default configuration. Maybe a USB keyboard will be detected, causing a ukbd: message in the log, but that's all - no input from it. You need to type kbdcontrol -k device to switch over from the default AT keyboard to the USB keyboard, there's no kbdmux in 4. As for servers, trying to connect via serial console seems to be the standard way. Otherwise, attach keyboard and monitor to the system while the power is off. REALLY OFF (pull mains plug to be really sure - see PS/2 defect mentioned above). -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
RE: console no responding to key in.
Thanks. But I have some of consoles did work - response the key in after the keyboard pluged in after. This is important. Almost all the servers in rack don't have keyboard collected unless we need to login to console. I couldn't plug in the keyboard then reboot the server to get access to the console. Jessie Xu Unix Administrator jessie...@cryptologic.com desk phone: 416 545 1453 x 5618 Skype: Jessie.xu972 -Original Message- From: Polytropon [mailto:free...@edvax.de] Sent: Friday, April 16, 2010 10:26 AM To: Chuck Swiger Cc: Jessie Xu; freebsd-questions@freebsd.org Subject: Re: console no responding to key in. On Thu, 15 Apr 2010 14:15:24 -0700, Chuck Swiger cswi...@mac.com wrote: On Apr 15, 2010, at 1:26 PM, Jessie Xu wrote: I must fix the problem since I need console login with root. Any insight on this? thanks. Our machines are Dell PowerEdge 2650 (2U rack mountable) , come with Video port, PS2 keyboard/Mouse ports, and two Serial ports. -- I also tried the serial ports for console access, no lucky. PS/2 isn't a hot-pluggable interface. On older hardware, you can blow a fuse on the motherboard by trying to do so while the machine is on, although newer equipment uses a polyfuse (aka PPTC or resettable fuse) to avoid permanent damage. An important advice! If there was no keyboard there initially, then the hardware may never attempt to use one added later, short of a power-cycle. If there was no atkbd: at boot time, attaching it later on will not introduce it to the system. As you said, Chuck, it may even destroy hardware to try to do so, leading to the fact that you have a server with *no* AT keyboard at all. I've already seen that with older systems not using a resettable fuse. In such cases, trying a USB keyboard instead might work better. Jessie Xu initially said he was on FreeBSD 4. If I remember correctly, what you suggest isn't possible in the default configuration. Maybe a USB keyboard will be detected, causing a ukbd: message in the log, but that's all - no input from it. You need to type kbdcontrol -k device to switch over from the default AT keyboard to the USB keyboard, there's no kbdmux in 4. As for servers, trying to connect via serial console seems to be the standard way. Otherwise, attach keyboard and monitor to the system while the power is off. REALLY OFF (pull mains plug to be really sure - see PS/2 defect mentioned above). -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: console no responding to key in.
On Fri, 16 Apr 2010 12:20:46 -0400, Jessie Xu jessie...@cryptologic.com wrote: But I have some of consoles did work - response the key in after the keyboard pluged in after. This could be a configuration topic. In /etc/ttys you can intendedly disable consoles (virtual terminals). If this has been the case, trying to login locally won't work. You could try to boot the system from a live CD or DVD to check the configuration. If you can reboot the machines, try to enter into single user mode. In this case, local console login usually is enabled, but it may require the root password. See man 5 ttys for possible details. This is important. Almost all the servers in rack don't have keyboard collected unless we need to login to console. As it has been mentioned, connecting a PS/2 keyboard to a running machine can be a really bad idea - even causing a defect of the PS/2 keyboard connectors. And with USB, you're mostly unlucky on FreeBSD 4 machines due to the lack of kbdmux / automatisms like via devd. I couldn't plug in the keyboard then reboot the server to get access to the console. If configured properly, it should be sufficient to press the power key to initiate a controlled system shutdown. This should give you the chance to try SUM or a live CD. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
RE: console no responding to key in.
Thanks. I will try to reboot to single user mode, change configuration to enable serial console. Jessie Xu Unix Administrator jessie...@cryptologic.com desk phone: 416 545 1453 x 5618 Skype: Jessie.xu972 -Original Message- From: Polytropon [mailto:free...@edvax.de] Sent: Friday, April 16, 2010 12:50 PM To: Jessie Xu Cc: Chuck Swiger; freebsd-questions@freebsd.org Subject: Re: console no responding to key in. On Fri, 16 Apr 2010 12:20:46 -0400, Jessie Xu jessie...@cryptologic.com wrote: But I have some of consoles did work - response the key in after the keyboard pluged in after. This could be a configuration topic. In /etc/ttys you can intendedly disable consoles (virtual terminals). If this has been the case, trying to login locally won't work. You could try to boot the system from a live CD or DVD to check the configuration. If you can reboot the machines, try to enter into single user mode. In this case, local console login usually is enabled, but it may require the root password. See man 5 ttys for possible details. This is important. Almost all the servers in rack don't have keyboard collected unless we need to login to console. As it has been mentioned, connecting a PS/2 keyboard to a running machine can be a really bad idea - even causing a defect of the PS/2 keyboard connectors. And with USB, you're mostly unlucky on FreeBSD 4 machines due to the lack of kbdmux / automatisms like via devd. I couldn't plug in the keyboard then reboot the server to get access to the console. If configured properly, it should be sufficient to press the power key to initiate a controlled system shutdown. This should give you the chance to try SUM or a live CD. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
console no responding to key in.
To whom it concerns: I am an unix administrator, am responsible for our company's unix servers: there are some running FreeBSD (ver 4.10, 4.11, etc). We I tried to connect to the console by connecting a LCD keyboard. I found some consoles are responding the key typing, some are just like a dead session - no responding to key typing at all. I must fix the problem since I need console login with root. Any insight on this? thanks. Our machines are Dell PowerEdge 2650 (2U rack mountable) , come with Video port, PS2 keyboard/Mouse ports, and two Serial ports. -- I also tried the serial ports for console access, no lucky. My question is: why some machines' LCD console is hang while some are good. the consoles with hang problem show Unix error message on the console, but I don't think this could cause the console hang. I also checked the BIOS, the good ones have same setting wit bad ones. Jessie Xu Unix Administrator jessie...@cryptologic.com desk phone: 416 545 1453 x 5618 Skype: Jessie.xu972 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: console no responding to key in.
On Apr 15, 2010, at 1:26 PM, Jessie Xu wrote: I must fix the problem since I need console login with root. Any insight on this? thanks. Our machines are Dell PowerEdge 2650 (2U rack mountable) , come with Video port, PS2 keyboard/Mouse ports, and two Serial ports. -- I also tried the serial ports for console access, no lucky. PS/2 isn't a hot-pluggable interface. On older hardware, you can blow a fuse on the motherboard by trying to do so while the machine is on, although newer equipment uses a polyfuse (aka PPTC or resettable fuse) to avoid permanent damage. If there was no keyboard there initially, then the hardware may never attempt to use one added later, short of a power-cycle. In such cases, trying a USB keyboard instead might work better. Regards, -- -Chuck ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
