Add an Acer Aspire 5 Laptop (https://www.amazon.com/gp/product/B07RF1XD36) to the list of problem platforms.
The machine was just upgraded to Linux Mint 20.2. Mint 20.1 was OK. Linux Mint 20 is based on Ubuntu 20.04 LTS. ----- $ dmesg | grep -i error [ 0.755376] RAS: Correctable Errors collector initialized. [ 0.775485] Error adding keys to platform keyring UEFI:db [ 0.775487] Error adding keys to platform keyring UEFI:db [ 8.440674] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro [ 9.210068] snd_rn_pci_acp3x: probe of 0000:05:00.5 failed with error -22 [ 20.681023] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled seq=1, emitted seq=4 [ 20.681156] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process Xorg pid 688 thread Xorg:cs0 pid 742 [ 25.505358] [drm:amdgpu_dm_set_crtc_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_crtc_irq_state: crtc is NULL at id :3 [ 25.505562] [drm:amdgpu_dm_set_crtc_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_crtc_irq_state: crtc is NULL at id :3 [ 25.505769] [drm:amdgpu_dm_set_crtc_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_crtc_irq_state: crtc is NULL at id :3 [ 25.505985] [drm:amdgpu_dm_set_crtc_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_crtc_irq_state: crtc is NULL at id :3 [ 25.506167] [drm:amdgpu_dm_set_pflip_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_pflip_irq_state: crtc is NULL at id :3 [ 25.506369] [drm:amdgpu_dm_set_pflip_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_pflip_irq_state: crtc is NULL at id :3 [ 25.506579] [drm:amdgpu_dm_set_pflip_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_pflip_irq_state: crtc is NULL at id :3 [ 25.506789] [drm:amdgpu_dm_set_pflip_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_pflip_irq_state: crtc is NULL at id :3 [ 25.507012] [drm:amdgpu_dm_set_vupdate_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_vupdate_irq_state: crtc is NULL at id :3 [ 25.507220] [drm:amdgpu_dm_set_vupdate_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_vupdate_irq_state: crtc is NULL at id :3 [ 25.507402] [drm:amdgpu_dm_set_vupdate_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_vupdate_irq_state: crtc is NULL at id :3 [ 25.507601] [drm:amdgpu_dm_set_vupdate_irq_state [amdgpu]] *ERROR* amdgpu_dm_set_vupdate_irq_state: crtc is NULL at id :3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870971 Title: [amdgpu] (X)ubuntu 20.04 boots to black screen on Lenovo Ideapad L340-17API when in battery mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1870971/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs