The problem I reported here was NOT fixed by the latest kernel update (5.4.0-71).
To clarify what I observe on my AMD-based desktop: The suspend/hibernation/resume problem seems to be strictly related to the amdgpu kernel module and possibly also amdgpu Xorg driver. I have tested the following scenarios. 1) kernel 5.4.0-71 with ACP enabled: - Xorg vesa driver loaded & no acceleration - suspend seems ok but fails on resume - hibernation/resume ok 2) kernel 5.4.0-71 with ACP disabled: - Xorg amdgpu driver loaded & acceleration working - suspend/resume ok - hibernation fails 3) kernel 5.8.0-49 with ACP disabled: - Xorg amdgpu driver loaded & acceleration working - suspend/resume ok - hibernation fails 4) kernel 5.8.0-49 with ACP enabled: - I only get black screen - Xorg fails to start? - suspend/hibernation not tested I have no problems with hibernation/suspend/resume on any of my Intel- based laptops. I also have no problem on most of my older AMD-based desktops. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1920674 Title: AMD A8-7680 (amdgpu): broken Xorg acceleration and hibernation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1920674/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
