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Rob Kampen wrote:
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Akemi Yagi wrote:
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<pre wrap="">On Tue, Jul 20, 2010 at 2:55 AM, Ned Slider <a
moz-do-not-send="true" class="moz-txt-link-rfc2396E"
href="mailto:ned@unixmail.co.uk"><ned@unixmail.co.uk></a> wrote:
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<pre wrap="">On 20/07/10 03:08, Rob Kampen wrote:
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<pre wrap="">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
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<pre wrap="">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 <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E" href="mailto:jarod@redhat.com"><jarod@redhat.com></a> [2.6.18-183.el5]
- [sound] alsa hda driver update for rhel5.5 (Jaroslav Kysela) [525390]
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<pre wrap=""><!---->
Rob,
I understand you have already tried a workaround reported in:
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://bugzilla.redhat.com/show_bug.cgi?id=586532">https://bugzilla.redhat.com/show_bug.cgi?id=586532</a>
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correct, I've had to use this on a number of nvidia based machines
already (unfortunately).<br>
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.<br>
Before I bother Gary I'll try to revert to a default centos kernel
rather than the centosplus kernel just to be sure.<br>
Will keep you posted.<br>
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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. <br>
On to plan B<br>
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.<br>
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.<br>
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.<br>
more reading coming my way.<br>
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cite="mid:AANLkTikghMJ-tfsdMHNe3ec9wuJzjyuMAwBOf7m_gdGd@mail.gmail.com"
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<pre wrap="">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
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