FS#16586 - [kernel26]-2.6.31.3 Soundcard not recognized anymore
Attached to Project:
Arch Linux
Opened by Julien (ganymede) - Monday, 12 October 2009, 11:55 GMT
Last edited by Aaron Griffin (phrakture) - Thursday, 15 October 2009, 17:06 GMT
Opened by Julien (ganymede) - Monday, 12 October 2009, 11:55 GMT
Last edited by Aaron Griffin (phrakture) - Thursday, 15 October 2009, 17:06 GMT
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Details
After upgrading the kernel to the current stable version
(from 2.6.30.6 to 2.6.31.3), my soundcard is not recognized
anymore.
- the little LED showing the state of my sound system is orange (it sould be white) - alsamixer says : "No soundcard found" - KDE displays an error message (approximative translation from french) : "Sound device removed" (see attachment for screenshot). Of course, I have no sound. My audio device, according to lspci is : 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03) The kernel sound module for this audio controller is snd_hd_intel. According to 'lsmod', the module is loaded (and also the other snd_* stuff). I first tried to : - reinstall alsa-lib, alsa-oss and alsa-utils - make a new config with alsaconf But it didn't solve my problem. Then I came back to the previous kernel version (kernel26-2.6.30.6-1)... and after rebooting the sound was back ! It looks like support for my soundcard was removed from the current stable version of the kernel. But this sound component is relatively recent and common in laptops (I'm using a HP Pavilion dv7-1299ef laptop, bought in february this year). 
message_erreur_alsa_stac92xx....
(49.1 KiB)
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This task depends upon
Closed by Aaron Griffin (phrakture)
Thursday, 15 October 2009, 17:06 GMT
Reason for closing: Not a bug
Additional comments about closing: Use enable_msi=1. See comments
Thursday, 15 October 2009, 17:06 GMT
Reason for closing: Not a bug
Additional comments about closing: Use enable_msi=1. See comments
Since I installed Arch, a few month ago, I used to pass some options to snd_hda_intel via /etc/modprobe.d/modprobe.conf :
options snd-hda-intel enable=1 enable_msi=1 single_cmd=1 power_save_controller=1
These options are needed to have my audio controller working properly ; without them, the sound is very strange (jerky, doesn't stop after closing a music player...).
Removing these options or replacing them by the options suggested in Arch's wiki ('options snd-hda-intel model=laptop' or 'options snd-hda-intel model=laptop enable=1 index=0') solve partly my problem : the soundcard is now recognized when running kernel 2.6.31.3.
The options I used to pass where preventing the hardware to be properly detected / initialized.
Yes... But the sound I have now is buggy as it was with previous kernel versions and without my usual options !
My problem is now : ho to make my sound system work properly with kernel 2.6.31 ?
After trying some options, it appears that :
options snd-hda-intel enable_msi=1
solves the problem.
The sound is now totally functionnal on my system.
This bug was not related to the new kernel, as I thought first, but to the options passed to snd-hda-intel in /etc/modprobe.d/modprobe.conf. Sorry for the mistake !
The only thing that has probably to be updated is the 'alsa' section onf the wiki.
options snd-hda-intel enable_msi=1
in /etc/modprobe.d/modprobe.conf