I'm using a "Vodafone Mobile Connect" (the real producer is "Option" and the model is "K3760 HSPA USB STICK", FCC ID: NCMOGI0411) usb modem to create a ppp connection to the Internet. I connect the usb stick, call "usb_modeswitch" (this is needed to flip the device from "memory storage" mode to "modem" mode), and then run "pppd call vodafone". The connection will tipically work for 10secs to 1 minute, then the system will look up hard: - video show a still image - keyboard leds doesn't switch their state (caps lock, num lock, ... doesn't work) - the cpu fan start rotating at full speed. - No disk/network/other activity at all I need to "pull the plug" to force a shutdown. The last working kernel i'm aware of is kernel 2.6.30, the first showing the problem 2.6.32.2 This problem was first reported here: http://lkml.org/lkml/2010/1/26/121
Created attachment 24720 [details] /proc/cpuinfo output
Created attachment 24721 [details] kernel log
Created attachment 24722 [details] lspci -vvv output
Created attachment 24723 [details] lsusb -v output on the device
Created attachment 24724 [details] /proc/ioports output
Created attachment 24725 [details] /proc/modules output
Created attachment 24726 [details] /proc/scsi/scsi output
Created attachment 24727 [details] ver_linux script output
Created attachment 24728 [details] kernel log with sysrq-t
Created attachment 24729 [details] proc_tty_devices output I was asked if i was using the serial or the cdc-acm driver
(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 26 Jan 2010 14:02:31 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=15146 > > Summary: freeze on ppp connection (using an usb "key" modem) > Product: Other > Version: 2.5 > Kernel Version: 2.6.32.5 x86_64 SMP > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: other_other@kernel-bugs.osdl.org > ReportedBy: fabio.bas@officineinformatiche.net > Regression: No > > > I'm using a "Vodafone Mobile Connect" (the real producer is "Option" and > the model is "K3760 HSPA USB STICK", FCC ID: NCMOGI0411) usb modem to > create a ppp connection to the Internet. > I connect the usb stick, call "usb_modeswitch" (this is needed to flip > the device from "memory storage" mode to "modem" mode), and then run > "pppd call vodafone". > The connection will tipically work for 10secs to 1 minute, then the > system will look up hard: > - video show a still image > - keyboard leds doesn't switch their state (caps lock, num lock, ... > doesn't work) > - the cpu fan start rotating at full speed. > - No disk/network/other activity at all > I need to "pull the plug" to force a shutdown. > > The last working kernel i'm aware of is kernel 2.6.30, the first showing > the problem 2.6.32.2 > > This problem was first reported here: http://lkml.org/lkml/2010/1/26/121 > post-2.6.30 regression, seems to be in the usb-serial area.
On Wed, Jan 27, 2010 at 04:46:33PM -0800, Andrew Morton wrote: > > The last working kernel i'm aware of is kernel 2.6.30, the first showing > > the problem 2.6.32.2 So 2.6.32.1 works properly? Can you try 2.6.32.6? I think this should now be resolved. thanks, greg k-h
The issue is still present in both 2.6.32.7 and 2.6.33. In the meanwhile, i've tried several different usb key modems (of a different brand, huawei) and they all works just fine. So, i suspect that the issue could be caused by a semi-failed hardware: it's probably just a matter of this usb key bitching on the usb port. Therefore, i'm closing this ticket myself as invalid