#14581: no audio on T410 (8086/3b56) - mixer not insertable in output path
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Reporter: ttcoder | Owner: korli
Type: bug | Status: new
Priority: normal | Milestone: R1/beta2
Component: Drivers/Audio/HDA | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by ttcoder):
Thanks korli
So the changes over at
[https://github.com/torvalds/linux/blob/master/sound/pci/hda/patch_conexant.c#L712]
ended up being "Pin Config" uint32 values, so I applied them in
{{{hda_codec_parse_audio_group()}}} [*]
I moved my uint16 "verb" inits to where you recommended. Tried with and
without them.
See diff and syslog attachments below.
As to the
[https://github.com/torvalds/linux/blob/master/sound/pci/hda/thinkpad_helper.c#L37
ACPI stuff], I stumbled on this line
{{{
led_set_func = symbol_request(tpacpi_led_set);
}}}
It seems to be the important one, to perform the TPACPI_LED_MUTE call
later down the function. But the symbol {{{tpacpi_led_set}}} is nowhere in
the linux hda driver?
You'll see in the syslog that the patched pin configs produce
"Association:15", but it seems that is unchanged; i.e. the unpatched haiku
driver was also saying the same thing; I'll try to investigate, find out
what an "association" is, and why the 0xF patch makes it "assoc: 15"
(seems normal) and the unpatched driver with value 0x0 also says "assoc:
15".
Overall, I tried a few combinations with no luck yet; will dig a bit more
(or I'll ask tidux for more logging, should be easier :-)
[*] details:
{{{
the linux driver's fix is applied in
apply_fixup() (hda_auto_parser.c:824) ; it's of type
HDA_FIXUP_PINS, which means calling =>
snd_hda_apply_pincfgs() => calls..
snd_hda_codec_set_pincfg() (in hda_codec.c) =>
snd_hda_add_pincfg()
}}}
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Ticket URL: <https://dev.haiku-os.org/ticket/14581#comment:7>
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