The mute led status can't be kept after s3/s4
Bug #1358116 reported by
Hui Wang
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
High
|
Hui Wang | ||
linux (Ubuntu) |
Fix Released
|
High
|
Hui Wang | ||
Trusty |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Steps to Reproduce:
1.Unbundle Ubuntu 14WWLTAL6ak on Some HP laptops
2. Turn off the sound via Mute button, the Mute LED is turned to Amber.
3. Put UUT S3 or S4 and resume => the Mute LED will turn to White.
Customer Impact:
Mute LED show wrong indicate after S3/S4/Resume.
This bug is for tracking purposes, please do not triage.
Changed in hwe-next: | |
status: | New → In Progress |
importance: | Undecided → High |
assignee: | nobody → Hui Wang (hui.wang) |
Changed in linux (Ubuntu Trusty): | |
status: | New → Fix Committed |
tags: |
added: verification-done-trusty removed: verification-needed-trusty |
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The fix has been merged by upstream.
commit f475371aa65de84 fa483a998ab7594 531026b9d9
Author: Hui Wang <email address hidden>
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 address hidden>
Cc: <email address hidden>
Signed-off-by: Hui Wang <email address hidden>
Signed-off-by: Takashi Iwai <email address hidden>