Bug 101926 - kabini amdgpu: LVDS not working after resume from suspend (works with radeon)
Summary: kabini amdgpu: LVDS not working after resume from suspend (works with radeon)
Status: RESOLVED MOVED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
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Reported: 2017-07-26 12:34 UTC by Chí-Thanh Christopher Nguyễn
Modified: 2019-11-19 08:20 UTC (History)
1 user (show)

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Attachments
dmesg (60.65 KB, text/plain)
2017-07-26 12:38 UTC, Chí-Thanh Christopher Nguyễn 		no flags Details
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Description Chí-Thanh Christopher Nguyễn 2017-07-26 12:34:37 UTC 
Using Linux 4.12.3 on a netbook with AMD A4-1200 Kabini APU and the amdgpu driver:

Upon resuming from suspend-to-RAM, the LVDS display will become all while.

This situation will persist until a reboot, even after turning it off and on again with xrandr.

Backlight control works fine at all times. External displays (VGA, HDMI) are not affected. The radeon driver does not have this problem.

I noticed that in bug 42960 a very similar issue was fixed in radeon, but am currently unsure whether the fix made it into amdgpu too.
Comment 1 Chí-Thanh Christopher Nguyễn 2017-07-26 12:38:21 UTC 
Created attachment 132985 [details]
dmesg
Comment 2 Martin Peres 2019-11-19 08:20:11 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/205.

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