On 2015-06-24 11:00, Takashi Iwai wrote:
At Wed, 24 Jun 2015 10:46:33 +0200,
David Henningsson wrote:
Thinkpad X250, when attached to a dock, has two headphone outs but
no line out. Make sure we don't try to turn this into one headphone
and one line out (since that disables the headphone amp on the dock).
Alsa-info at http://www.alsa-project.org/db/?f=36f8764e1d782397928feec715d0ef90dfddd4c1
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
This is one of fixes I had in mind (and asked for testing in bugzilla
kernel.org report).
Sorry, I'm missing context. What report?
One drawback by this is that the auto-mute
*between* the headphones won't work like before. If one has expected
it, then this can be seen as a regression.
Fair enough, we can drop stable from the patch since this could be seen
as behavioural change rather than bug fix.
Another fix was to change this as a proper line-out. This will keep
the current auto-mute behavior.
OTOH, dealing both jacks equally is also not bad, per se.
The tricky thing about routing is that everyone wants it different, so
pleasing everyone seems to be an impossible equation :-/
I would choose the default behaviour (headphone or line out) based on
the icon on the jack. I should double-check that with someone who has
the hardware. And then, if someone wants another behaviour then
hdajackretask can be used. Or we can add a jack mode kcontrol for that
jack, if you prefer, although I'd have to check how PulseAudio handles
that (not that well, is my gut feeling).
--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html