On Mon, Jan 12, 2015 at 8:33 AM, David Henningsson david.henningsson@canonical.com wrote:
On 2015-01-11 22:11, Thanos Kyritsis wrote:
Hello,
I hope it's ok to e-mail you directly instead of going through an official bug tracker, sorry in advance otherwise.
Ok. I have added alsa-devel to CC.
I'd like your opinion on a patch of yours that dates a year back:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/... https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1248116
This patch has a negative impact for my hardware. I've completely lost the kernel's front panel jack auto-mute functionality.
In detail: my motherboard is Gigabyte Z68AP-D3, utilizing ALC889 chipset (http://www.gigabyte.com/products/product-page.aspx?pid=3897) with PCI id: 0x1458, 0xa002.
Without this patch (that is kernel up to 3.13.x), all is OK, when I plug headphones via the front panel jack, the kernel auto-mutes the speaker-phone jack. With the patch (that is kernel 3.14.x and all later versions), auto-mute does not work. Plugging headphones results on sound getting through both jacks simultaneously. I can, of course, control the volume/mute of these two jacks independently via CLI alsamixer, but I think this is a regression. Do you agree ? I'm noticing that the patch's purpose was to fix a slightly different problem, though. Is it possible to satisfy both requirements for both motherboards ?
Can I do something to further help ? If you'd like me to comment on bug #1248116, that will be no problem of course.
Thank you in advance for your help and for your contribution towards a better kernel and distros :-)
Okay. So the real question is if there's a way we can tell the working and the faulty ones apart. Until we have found such a way, I'll be hesitant to revert the patch.
Here's alsa-info for a faulty one: http://www.alsa-project.org/db/?f=435c404946687b445f6c60da5edc5c3f083bc1da
Both Codec SSID and PCI SSID are 1458:a002 on that machine, codec vendor ID is 10ec:0899 - maybe we should only apply this quirk for certain codec vendor IDs, then?
Thanks for your help,
for the record, my alsa-info is: http://www.alsa-project.org/db/?f=f5ae6038b7e27a1c1ab9c137f1ec64a806491145
SSID: 1458:a002 vendor ID: 10ec:0889
Anyhow, you can bring back jack detection for yourself (as a workaround) by reconfiguring the codec. This is easiest done through hda-jack-retask (available in the alsa-tools repository). In hda-jack-retask click "advanced override", then make sure pin 0x1b has jack detect available.
Gosh, I hadn't realised it was so easy.
I did recompile my kernel with the quirk reverted, but obviously the re-tasking setup is much more convenient and maintainable :-)
Keep up the good work!
-- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic