Public bug reported: Binary package hint: kernel-image-2.6.20-16-generic-di
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://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/137734 (as the similar problem - corrupt sound support - and same kernel version) https://bugs.launchpad.net/ubuntu/+source/alsa-utils/+bug/81975 https://bugs.launchpad.net/ubuntu/+source/gnome-alsamixer/+bug/95479 (as I used to get same error message ("function snd_mixer_load failed: Invalid argument") from alsamixer under 2.6.20-16-generic) https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.15/+bug/46939 (as related to the following more general mixer related problems - see below) More general problems with KMix/amixer/alsamixer functionalities for SB450 are described (including my addendum) here: http://ubuntuforums.org/showthread.php?t=506515 (I do not want to cross post, so just linking here) 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_intel,snd_hda_codec,snd_pcm_oss 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_oss,snd_seq_midi snd_seq 52592 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event snd_timer 23684 3 snd_pcm,snd_seq snd_seq_device 9100 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq snd 54020 14 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device snd_page_alloc 10888 2 snd_hda_intel,snd_pcm 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_intel,snd_hda_codec,snd_pcm_oss 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_oss,snd_seq_midi snd_seq 52592 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event snd_timer 23684 2 snd_pcm,snd_seq snd_seq_device 9100 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq snd 54020 12 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device snd_page_alloc 10888 2 snd_hda_intel,snd_pcm ** Affects: linux-source-2.6.20 (Ubuntu) Importance: Undecided Status: New -- 2.6.20-16 kernell corrupts SB450 kmix https://bugs.launchpad.net/bugs/140937 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
