Re: [CentOS] Audio fails on centos 5.5 sony laptop - snd-hda-intel

[Rob Kampen]

Rob Kampen wrote: Akemi Yagi wrote: On Tue, Jul 20, 2010 at 2:55 AM, Ned Slider <n...@unixmail.co.uk> wrote: On 20/07/10 03:08, Rob Kampen wrote: 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 I would suggest you start checking back through the changelogs between kernel-2.6.18-194.el5 and kernel-2.6.18-164.el5, find likely candidates that may have caused your issue and then rebuild a testing kernel with that patch reverted. If that testing kernel fixes your issue then you've identified the issue and can file a bug report upstream. To start you on your way, this patch looks like a likely candidate for you to investigate further: * Mon Dec 21 2009 Jarod Wilson <ja...@redhat.com> [2.6.18-183.el5] - [sound] alsa hda driver update for rhel5.5 (Jaroslav Kysela) [525390] Rob, I understand you have already tried a workaround reported in: https://bugzilla.redhat.com/show_bug.cgi?id=586532 correct, I've had to use this on a number of nvidia based machines already (unfortunately). In this instance it was no help - not surprising as it is not an nvidia controller but intel chipset albeit with an nvidia graphics chip. Before I bother Gary I'll try to revert to a default centos kernel rather than the centosplus kernel just to be sure. Will keep you posted. I have installed the standard Centos 2.6.18-194.8.1 .el5 kernel on the sony laptop and this fares no better - still no HDA-Intel sound card showing even though the driver is loaded. On to plan B I have started to setup an rpmbuild environment but need to read some more instructions, as when I followed the wiki I got different results - not sure if this is due to using the centosplus SRPM, as that is what all my workstations use, or due to my error in following instructions. When I tried the make oldconfig after copying the config file as indicated I ended up having to respond to lots of option questions that I have no idea about, thus I'm likely to select an option that causes problems. I thought make oldconfig was a process to dump out the current config settings so they could be used as a template for the new build......confused. more reading coming my way. According to comment #10 in there, Gary Gatling built a test kernel with the above alsa patch removed. You might want to try asking him for the kernel he built if you do not feel like building it yourself. Akemi _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos

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