Bug 206053 - Lock screen Black after idle with amdgpu.dc=1
Summary: Lock screen Black after idle with amdgpu.dc=1
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-01-01 21:25 UTC by siyia
Modified: 2020-01-01 21:25 UTC (History)
0 users

See Also:
Kernel Version: 4.19+
Subsystem:
Regression: No
Bisected commit-id:

Attachments
mydmesg (93.84 KB, text/plain)
2020-01-01 21:25 UTC, siyia 		Details
Add an attachment (proposed patch, testcase, etc.)

Description siyia 2020-01-01 21:25:15 UTC 
Created attachment 286565 [details]
mydmesg

I am having a system with rx 550 polaris using amdgpu kernel driver and Mesa 19.3+.
when the screen gets idle locked with lightlocker,xscreensaver,xfce4-screensaver the screen cannot get signal back and i get a black screen. The screen lockers work because if i enter my passwd and press enter i can login in the desktop.

Additional info: If i lock/blank the screen manually and move them mouse the screen gets the signal back like it should.Issue happens across Debian and Arch distributions.Monitor is connected with an hdmi 2.0 cable.

Workaround: Adding amdgpu.dc=0 in grub resolves the issue for all screen lockers in my system, but disables amd display code.
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