After updating my laptop ( compaq 6820s) to Centos 5.6 the sound is gone.
The sound card is still detected but there is no sound from speaker
Vendor: Intel Corporation Model: 82810H (ICH8 Family) HD Audio Controller Module: snd-hda-intel
On the same updated laptop the sound is working fine with an older kernel ( 2.6.18-194.32.1.el5.centos.plus )
I tried with no success ( sound related ) booting all of the following:
kernel#2.6.18-238.el5 kernel#2.6.18-238.el5.centos.plus kernel#2.6.18-238.1.1.el5 kernel#2.6.18-238.1.1.el5.centos.plus kernel#2.6.18-238.5.1.el5 kernel#2.6.18-238.5.1.el5.centos.plus
This is a nonworking scsconfig.log: http://pastebin.com/XW9e72Jj
The sound is working fine with the following kernels: kernel#2.6.18-194.26.1.el5.centos.plus kernel#2.6.18-194.32.1.el5.centos.plus and all the older
This is a working scsconfig.log: http://pastebin.com/xqdMra5q
Centos was installed on this laptop in 2007 and everything worked ok till now.
Googling around produced some results but none of them have a working solution
This email is my second email to the list on the same subject. The first email is probably stuck in lalaland due to my poor judgment and due to the logs attached. Please excuse me if both of them reach you.
Can anyone suggest a solution or a path to follow ?
Thanks in advance, Iulian L. Dragomir
On Sun, Apr 10, 2011 at 5:35 PM, Iulian L Dragomir iulianld@gmail.com wrote:
After updating my laptop ( compaq 6820s) to Centos 5.6 the sound is gone.
The sound card is still detected but there is no sound from speaker
Vendor: Intel Corporation Model: 82810H (ICH8 Family) HD Audio Controller Module: snd-hda-intel
Correction .. the card is detected as :
Vendor: Intel Corporation Model: 82801H (ICH8 Family) HD Audio Controller Module: snd-hda-intel
Sorry for the confusion.
On Apr 10, 2011, at 10:35 AM, Iulian L Dragomir iulianld@gmail.com wrote:
After updating my laptop ( compaq 6820s) to Centos 5.6 the sound is gone.
The sound card is still detected but there is no sound from speaker
Vendor: Intel Corporation Model: 82810H (ICH8 Family) HD Audio Controller Module: snd-hda-intel
On the same updated laptop the sound is working fine with an older kernel ( 2.6.18-194.32.1.el5.centos.plus )
I tried with no success ( sound related ) booting all of the following:
kernel#2.6.18-238.el5 kernel#2.6.18-238.el5.centos.plus kernel#2.6.18-238.1.1.el5 kernel#2.6.18-238.1.1.el5.centos.plus kernel#2.6.18-238.5.1.el5 kernel#2.6.18-238.5.1.el5.centos.plus
This is a nonworking scsconfig.log: http://pastebin.com/XW9e72Jj
The sound is working fine with the following kernels: kernel#2.6.18-194.26.1.el5.centos.plus kernel#2.6.18-194.32.1.el5.centos.plus and all the older
This is a working scsconfig.log: http://pastebin.com/xqdMra5q
Centos was installed on this laptop in 2007 and everything worked ok till now.
Googling around produced some results but none of them have a working solution
This email is my second email to the list on the same subject. The first email is probably stuck in lalaland due to my poor judgment and due to the logs attached. Please excuse me if both of them reach you.
Can anyone suggest a solution or a path to follow ?
Check the order of driver loading. This affected me a few kernels ago. Found that one needs to force the order of driver loading in modprobe.conf HTH
Thanks in advance, Iulian L. Dragomir _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Sun, Apr 10, 2011 at 8:45 PM, Rob Kampen rkampen@kampensonline.com wrote:
Check the order of driver loading. This affected me a few kernels ago. Found that one needs to force the order of driver loading in modprobe.conf HTH
The modprobe.conf is looking like this: ========================
alias eth0 e1000e alias scsi_hostadapter ata_piix alias snd-card-0 snd-hda-intel options snd-card-0 index=0 options snd-hda-intel index=0 remove snd-hda-intel { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-hda-intel alias wlan0 iwl3945
=======================
The same configuration is used for both old (functional) and new (nonfunctional) kernels
What are your suggestions regarding the order of drivers loading ?
Iulian L Dragomir wrote:
On Sun, Apr 10, 2011 at 8:45 PM, Rob Kampen rkampen@kampensonline.com wrote:
Check the order of driver loading. This affected me a few kernels ago. Found that one needs to force the order of driver loading in modprobe.conf HTH
The modprobe.conf is looking like this:
alias eth0 e1000e alias scsi_hostadapter ata_piix alias snd-card-0 snd-hda-intel options snd-card-0 index=0 options snd-hda-intel index=0 remove snd-hda-intel { /usr/sbin/alsactl store 0 >/dev/null 2>&1 || : ; }; /sbin/modprobe -r --ignore-remove snd-hda-intel alias wlan0 iwl3945
=======================
The same configuration is used for both old (functional) and new (nonfunctional) kernels
What are your suggestions regarding the order of drivers loading ?
I found that there was another module loading before the snd-hda-intel thus I added index=0 to the one I needed and index=1 to the other module that seemed to get in the way. the clue was looking under System>Administration>Sound Card Detection and seeing the Audio configuration dialog > Settings tab - it showed my desired sound card as number 1 rather than 0 with another item as number 0 (one I did not even know was on the computer). Took me a recompiled kernel and hours of wasted time. Old kernels all worked fine - thus I thought it was a kernel patch problem - removed all the related patches and still no joy. I do not know what they are doing to the kernel but over time the loading of modules, order of disk detection etc is becoming much more of an issue. HTH YMMV
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On Sun, Apr 10, 2011 at 10:15 PM, Rob Kampen rkampen@kampensonline.com wrote:
I found that there was another module loading before the snd-hda-intel thus I added index=0 to the one I needed and index=1 to the other module that seemed to get in the way. the clue was looking under System>Administration>Sound Card Detection and seeing the Audio configuration dialog > Settings tab - it showed my desired sound card as number 1 rather than 0 with another item as number 0 (one I did not even know was on the computer). Took me a recompiled kernel and hours of wasted time. Old kernels all worked fine - thus I thought it was a kernel patch problem - removed all the related patches and still no joy. I do not know what they are doing to the kernel but over time the loading of modules, order of disk detection etc is becoming much more of an issue. HTH YMMV
Thank you for your explanations and for the suggestions.
Unfortunately i only have a single device in Sound Card Detection > Audio configuration dialog > Settings tab so the snd-hda-intel is number 0.
Patching and recompiling the kernel is over my level of expertise.
For the moment i will continue to use kernel#2.6.18-194.26.1.el5.centos.plus at least the next kernel update will appear.
Elrepo and kmod-alsa provided by them is the next thing on my "to do" list (the clue is coming from oracle compatible kernel .. in the release notes they mention that they updated alsa-hda drivers) . . If the problem is solved by this i well see in short time.
On Sun, Apr 10, 2011 at 10:52 PM, Iulian L Dragomir iulianld@gmail.com wrote:
On Sun, Apr 10, 2011 at 10:15 PM, Rob Kampen rkampen@kampensonline.com wrote:
I found that there was another module loading before the snd-hda-intel thus I added index=0 to the one I needed and index=1 to the other module that seemed to get in the way. the clue was looking under System>Administration>Sound Card Detection and seeing the Audio configuration dialog > Settings tab - it showed my desired sound card as number 1 rather than 0 with another item as number 0 (one I did not even know was on the computer). Took me a recompiled kernel and hours of wasted time. Old kernels all worked fine - thus I thought it was a kernel patch problem - removed all the related patches and still no joy. I do not know what they are doing to the kernel but over time the loading of modules, order of disk detection etc is becoming much more of an issue. HTH YMMV
Thank you for your explanations and for the suggestions.
Unfortunately i only have a single device in Sound Card Detection > Audio configuration dialog > Settings tab so the snd-hda-intel is number 0.
Patching and recompiling the kernel is over my level of expertise.
For the moment i will continue to use kernel#2.6.18-194.26.1.el5.centos.plus at least the next kernel update will appear.
Elrepo and kmod-alsa provided by them is the next thing on my "to do" list (the clue is coming from oracle compatible kernel .. in the release notes they mention that they updated alsa-hda drivers) . . If the problem is solved by this i well see in short time.
Problem solved by: yum --enablerepo=elrepo install kmod-alsa
I do hope that the next centos kernel will work out of the box but till then i will use the above solution
Thanks to everyone for suport
-
Iulian L Dragomir -
Rob Kampen