The fix has been merged by upstream.
commit f475371aa65de84fa483a998ab7594531026b9d9
Author: Hui Wang <[email protected]>
Date: Tue Aug 19 12:07:03 2014 +0800
ALSA: hda - restore the gpio led after resume
On some HP laptops, the mute led is controlled by codec gpio.
When some machine resume from s3/s4, the codec gpio data will be
cleared to 0 by BIOS:
Before suspend:
IO[3]: enable=1, dir=1, wake=0, sticky=0, data=1, unsol=0
After resume:
IO[3]: enable=1, dir=1, wake=0, sticky=0, data=0, unsol=0
To skip the AFG node to enter D3 can't fix this problem.
A workaround is to restore the gpio data when the system resume
back from s3/s4. It is safe even on the machines without this
problem.
BugLink: https://bugs.launchpad.net/bugs/1358116
Tested-by: Franz Hsieh <[email protected]>
Cc: [email protected]
Signed-off-by: Hui Wang <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
** Changed in: hwe-next
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1358116
Title:
The mute led status can't be kept after s3/s4
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