2.6.20-16 kernell corrupts SB450 kmix
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
linux-source-2.6.20 (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: kernel-
100% reproducible bug, verified to be caused by 2.6.20-16 kernel while 2.6.20-15 works OK:
Environment: Installing fresh Kubuntu 7.04 Feisty Fawn from the official site downloaded live CD for a friend on the Aspire 3104NWLMi laptop.
Related hardware: lspci | grep Audio ==> 00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
Brief description: While under 2.6.20-15-generic kernel was KMix functional normally (under reservations see below), after Full update it started to show the one completely unrelated to the given hardware (either by text description, or by that e.g. did not have any inputs (mics) panel at all). Trying to localize problem I made another fresh Kubuntu installation, where just after establishing network connection I intended to separately update on package-by-package basis. Luckily (even if not fully accidentally ;-) ) I started with kernel update (to 2.6.20-16-generic) and bingo, the problem reappeared. To confirm localization I have immediately rebooted on previous kernel 2.6.20-15-generic, with no other changes and the correct KMix panel reappeared.
Related to (suspected-to-be :-) ) bugs:
https:/
https:/
https:/
https:/
More general problems with KMix/amixer/
More details:
As I had to pass the laptop back to the friend, I just listed what I have seen in other bugreports, to have at least some clues possibly
2.6.20-16 lsmod | grep snd_ ==>
snd_hda_intel 21912 4
snd_hda_codec 205056 1 snd_hda_intel
snd_pcm_oss 44544 0
snd_mixer_oss 17408 2 snd_pcm_oss
snd_pcm 79876 4 snd_hda_
snd_seq_dummy 4740 0
snd_seq_oss 32896 0
snd_seq_midi 9600 0
snd_rawmidi 25472 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_
snd_seq 52592 6 snd_seq_
snd_timer 23684 3 snd_pcm,snd_seq
snd_seq_device 9100 5 snd_seq_
snd 54020 14 snd_hda_
snd_page_alloc 10888 2 snd_hda_
2.6.20-15 lsmod | grep snd_ ==>
snd_hda_intel 21912 1
snd_hda_codec 205440 1 snd_hda_intel
snd_pcm_oss 44544 0
snd_mixer_oss 17408 1 snd_pcm_oss
snd_pcm 79876 3 snd_hda_
snd_seq_dummy 4740 0
snd_seq_oss 32896 0
snd_seq_midi 9600 0
snd_rawmidi 25472 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_
snd_seq 52592 6 snd_seq_
snd_timer 23684 2 snd_pcm,snd_seq
snd_seq_device 9100 5 snd_seq_
snd 54020 12 snd_hda_
snd_page_alloc 10888 2 snd_hda_
Beginning with the Hardy Heron 8.04 development cycle, all open Ubuntu kernel bugs need to be reported against the "linux" kernel package. We are automatically migrating this bug to the new "linux" package. However, development has already began for the upcoming Intrepid Ibex 8.10 release. It would be helpful if you could test the upcoming release and verify if this is still an issue - http:// www.ubuntu. com/testing . If the issue still exists, please update this report by changing the Status of the "linux" task from "Incomplete" to "New". We appreciate your patience and understanding as we make this transition. Thanks!