I noticed that after boot with badly initialized GPU idle power consumption is 2-2.5 higher than after normal boots.
But this can be fixed by putting laptop to suspend and waking it. Therefore I've extended my workaround from #3 to this: [Service] Type=oneshot ExecCondition=/bin/sh -c "journalctl -fk | grep -Fm1 'amdgpu_cs_ioctl [amdgpu]] *ERROR* Failed to initialize parser'" ExecStart=/usr/bin/echo 'Not good. Restarting display-manager' ExecStart=/usr/bin/systemctl restart display-manager.service ExecStart=/usr/bin/sleep 3 ExecStart=/usr/bin/echo 'Brief suspend to fix power consumption' # Note that mode has to be "mem". "freeze" does not fix power consumption. ExecStart=/usr/sbin/rtcwake --mode mem --seconds 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] Xubuntu 20.04 boots to black screen on Lenovo Ideapad L340-17API 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
