On Mon, Oct 13, 2008 at 12:50:12AM +0300, Alexander Motin wrote: Adam McDougall wrote: > Alexander Motin wrote: >> Frank Mayhar wrote: >>> Fatal trap 12: page fault while in kernel mode >>> cpuid = 1; apic id = 01 >>> fault virtual address = 0x14 >>> fault code = supervisor read, page not present >> > I think I am having a similar issue, discovered it on a new model Dell > Latitude E6500. It is probably seeing a codec for HDMI and modem in > addition to the normal sound. Sound works if I patch the old hda driver > to detect my codec on 7.1, but I just got 8 installed last night. If I > have KDB_UNATTENDED and a dumpdev, it either hangs at the beginning of > the dump or reboots almost immediately after the panic. I can try to > hook up a serial or firewire console later and gather more info, but > tonight I might be too busy. In the meantime, here are two screenshots > of the panic and the backtrace: > http://www.egr.msu.edu/~mcdouga9/pics/1007081830.jpg > http://www.egr.msu.edu/~mcdouga9/pics/1007081831.jpg I have managed to artificially reproduce your situation and I think my recent patch just committed to 8-CURRENT should fix the problem. Report me the results please. -- Alexander Motin Thanks, I tried it and it works! I didn't have to patch codec information into the driver to make my laptop speakers work, and they were selected by default (lucky for me). I did not test headphones yet, but I will later. I plan on comparing the old hda driver with the new one and see what patches would be appropriate to submit to clean up some of the "Unknown"s when I have a chance. hdac0: <HDA Codec #0: Unknown Codec> hdac0: <HDA Codec #1: Conexant (Unknown)> hdac0: <HDA Codec #2: Unknown Codec> pcm0: <HDA codec #0 Unknown Codec PCM #0> on hdac0 pcm1: <HDA codec #0 Unknown Codec PCM #1> on hdac0 pcm2: <HDA codec #2 Unknown Codec PCM #0> on hdac0Received on Sun Oct 12 2008 - 22:20:50 UTC
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