Kernel Bug Tracker – Bug 15534
07ca:b808 crashing and breaking usb's
Last modified: 2011-03-18 10:02:37 UTC
Created attachment 25513 [details]
Dmesg output after usb/dvb hang
When I try to use my 07ca:b808 AVerMedia Technologies in any application it freezes the application and "hang" all the usb system.
When it happens, a "backtrace" appear in demsg, (see attachment).
Then, I have to reboot if I want to have the usb's working again, I can't rmmod the modules because they're still in use :/
I'm able to test patches if required, thanks!
What was the last working kernel?
The 2.6.32 (I have been using it to use the card a few hours ago).
It's still happening, everything remains quite the same (with the latest 2.6.33), if needed I can test with 2.6.34
(In reply to comment #3)
> It's still happening, everything remains quite the same (with the latest
> 2.6.33), if needed I can test with 2.6.34
Still happening with 2.6.34-rc7, same bt.
Is there any way I can test the last v4l2/dvb code without had to compile the entire kernel?
(In reply to comment #6)
> Is there any way I can test the last v4l2/dvb code without had to compile the
> entire kernel?
Yes, you may use the backport tree, available at:
There were some fixes applied at the dmx filter stuff on a late 2.6.34 -rc. I'm not sure if they were applied before -rc7. Could you please test against the stable 2.6.34?
Still happening with stable 3.6.34 and with the backport tree :(
Is there any way I can be more helpful?
Still happening with stable 2.6.35, once again, is there any way I can be more helpful?
Created attachment 38472 [details]
Still crashing with 2.6.36, added new dmesg.txt
Mauro, any other ideas?
Alex, can you turn on debugging in the module? (specifying debug=1 as a module parameter on loading, maybe via /etc/modprobe.conf or something similiar)
The dmesg looks similar, how can I check if the debug is really activated?
dvb_usb_dib0700 debug=1 to modprobe.conf, do I have to add more debugs?
I'm glad to say that this bug has been fixed in 2.6.38, I don't know the commit though :/
Good. I'm closing this as unreproducible then.