> Except that patch only works for the 'option' driver, which is where > most 3G modem USB IDs should be added. If your device's IDs aren't > there, you can't take advantage of the fix. What are your device's IDs?
Well. How can I determine them and check if they are present or not? Btw, the 'option' driver gets loaded. $ lsmod | grep option option 25285 2 usb_wwan 20407 1 option usbserial 42908 7 option,usb_wwan $ modinfo option filename: /lib/modules/2.6.38-8-generic/kernel/drivers/usb/serial/option.ko license: GPL version: v0.7.2 description: USB Driver for GSM modems author: Matthias Urlichs <sm...@smurf.noris.de> srcversion: 0D74972353E56E42A1951FF alias: usb:v1EE8p000Bd*dc*dsc*dp*ic*isc*ip* ...a lot of other alias lines... > > Dan > >> >> > >> > Perazim >> > >> > On Thu, 2011-05-12 at 21:29 +0100, pera...@portugalmail.pt wrote: >> >> >> >> Dan, >> >> >> >> Attached are the messages log and the modem-manager log for the Alcatel >> >> X220. >> >> >> >> Let me know if you need any other info or to test anything. >> > >> > These logs indicate a kernel bug, with a 30 second hang when closing a >> > serial port. I submitted a patch to the kernel to fix this issue which >> > was accepted for the 2.6.37 kernel: >> > >> > commit 02303f73373aa1da19dbec510ec5a4e2576f9610 >> > Author: Dan Williams <d...@redhat.com> >> > Date: Fri Nov 19 16:04:00 2010 -0600 >> > >> > usb-wwan: implement TIOCGSERIAL and TIOCSSERIAL to avoid blocking >> > close(2) >> > >> > Some devices (ex ZTE 2726) simply don't respond at all when data is sent >> > to some of their USB interfaces. The data gets stuck in the TTYs queue >> > and sits there until close(2), which them blocks because closing_wait >> > defaults to 30 seconds (even though the fd is O_NONBLOCK). This is >> > rarely desired. Implement the standard mechanism to adjust closing_wait >> > and let applications handle it how they want to. >> > >> > Signed-off-by: Dan Williams <d...@redhat.com> >> > >> > and the ModemManager snapshot you have should have the support necessary >> > here. What kernel version are you running? >> > >> > Dan >> > >> > _______________________________________________ >> > networkmanager-list mailing list >> > networkmanager-list@gnome.org >> > http://mail.gnome.org/mailman/listinfo/networkmanager-list >> > >> _______________________________________________ >> networkmanager-list mailing list >> networkmanager-list@gnome.org >> http://mail.gnome.org/mailman/listinfo/networkmanager-list > > > _______________________________________________ networkmanager-list mailing list networkmanager-list@gnome.org http://mail.gnome.org/mailman/listinfo/networkmanager-list