Lenovo Thinkpad E450 (Kaveri A6-7000 Radeon R4) Blank Screen after suspend (displayport link issues)
Submitted by Kyle Brooks
Assigned to Default DRI bug account
Description
Created attachment 129527
dmesg 4.9.8
If I shut my laptop lit it suspends, then when opening the lid and resuming I get a blank screen and am unable to get the display to work again unless I reboot. I can ssh into computer and I get displayport link errors in the attached dmesg log.
This issue does not occur if I use the radeon kernel module instead of amdgpu.
This seems very similar to bug 90320 but I filed this one because it is amdgpu not radeon:
https://bugs.freedesktop.org/show_bug.cgi?id=90320
I've also attached the Xorg.0.log but it does not have any errors indicated. It indicates successful exit because I stopped the server over ssh and tried to restart gdm a few times which is why there are multiple displayport link status failed messages in dmesg.
Attachment 129527, "dmesg 4.9.8":
dmesg-4.9.8-1-ARCH.log