Rob Kampen wrote: > Hi List, been chasing my tail for the last two hours and getting > nowhere on my wifes laptop. > I only do updates monthly on her machine, as it is safely behind > firewalls and only does email and browser stuff. > I have never had audio problems on this laptop, Centos just worked > from day one - even the wireless. > > It appears that the 5.5 kernels and related audio driver snd-hda-intel > do not function. > If I reboot into 2.6.18-164.15.1.el5.centos.plus all is well. > $ cat /proc/asound/cards > 0 [Intel ]: HDA-Intel - HDA Intel > HDA Intel at 0x80000000 irq 169 > 1 [U0x46d0x804 ]: USB-Audio - USB Device 0x46d:0x804 > USB Device 0x46d:0x804 at usb-0000:00:1d.7-3, > high speed > > Neither 2.6.18-194.3.1.el5.centos.plus or > 2.6.18-194.8.1.el5.centos.plus have functioning sound. > on these kernels I get > $ cat /proc/asound/cards > 0 [U0x46d0x804 ]: USB-Audio - USB Device 0x46d:0x804 > USB Device 0x46d:0x804 at usb-0000:00:1d.7-3, > high speed > > yet lsmod shows > <snip> > snd_hda_intel 472337 0 > snd_seq_dummy 7877 0 > snd_seq_oss 32577 0 > snd_seq_midi_event 11073 1 snd_seq_oss > snd_seq 49585 5 > snd_seq_dummy,snd_seq_oss,snd_seq_midi_event > snd_pcm_oss 42817 0 > snd_usb_audio 77761 2 > snd_mixer_oss 19009 1 snd_pcm_oss > snd_pcm 72133 3 snd_hda_intel,snd_pcm_oss,snd_usb_audio > snd_usb_lib 19137 1 snd_usb_audio > snd_rawmidi 26561 1 snd_usb_lib > snd_timer 24517 2 snd_seq,snd_pcm > snd_page_alloc 14281 2 snd_hda_intel,snd_pcm > snd_seq_device 11725 4 > snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi > snd_hwdep 12869 2 snd_hda_intel,snd_usb_audio > snd 55749 15 > snd_hda_intel,snd_seq_oss,snd_seq,snd_pcm_oss,snd_usb_audio,snd_mixer_oss,snd_pcm,snd_rawmidi,snd_timer,snd_seq_device,snd_hwdep > > soundcore 11553 1 snd > > So I remembered the bug rh introduced with the 194 kernels and nvidia > chipsets (not my case but I'm desperate) and added the enable_msi=0 so > that my modprobe.conf is now > <snip> > options snd cards_limit=8 > alias snd-card-0 snd-hda-intel > options snd-hda-intel index=0 enable_msi=0 > > but it still will not work. > <rant> > I am getting frustrated at the retrograde steps that seem to be > hitting kernel and 5.x upgrades lately. > yum update used to just work, get me the latest patches and all was > well - after all that is why I use Centos. > </rant> > I have tried modprobe -r to remove and reload module but to no avail. > Anyone have any ideas as to what I try next? > Google has not given me any ideas yet. > TIA > Still no joy - I am at a loss to know what to check - if I boot a 194 kernel no sound, 164 kernel is fine - why the regression? Same configs, same modules loaded but now no sound - what can I check to determine problem and find a solution? no errors in logs or dmesg > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -------------- next part -------------- A non-text attachment was scrubbed... Name: rkampen.vcf Type: text/x-vcard Size: 123 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20100719/70536301/attachment-0003.vcf>