On Wed, Oct 05, 2011 at 10:38:18 -0400, Dave Jones davej@redhat.com wrote:
The kernel-debug rpm should have everything you'd need.
But I can't get the system to crash to get a traceback. It just hangs. I tried using the sysrq commands and NMI timeouts and I haven't been able to get a dump or traceback.
Hardware specific problems like this are a nightmare for us to diagnose. It might even come down to you needing to do a bisect to find the individual kernel change that caused the problem. (assuming you know a 'good' version to start from)
The issue goes back quite a ways (probably it last worked correctly with 2.6.29.1-68.fc11.i686.PAE). I have a USB headset now so I have been less concerned about the issue. But several months ago there were some USB issues and I switched back to motherboard sound during that time and had a number of hangs, so I opened a new bug (since I am not 100% sure it is really the same bug as 496536).