https://bugzilla.kernel.org/show_bug.cgi?id=206053
Bug ID: 206053 Summary: Lock screen Black after idle with amdgpu.dc=1 Product: Drivers Version: 2.5 Kernel Version: 4.19+ Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: eutychios23@gmail.com Regression: No
Created attachment 286565 --> https://bugzilla.kernel.org/attachment.cgi?id=286565&action=edit 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.