The working workaround for me was to add "radeon.modeset=0 amdgpu.runpm=0 acpi_backlight=intel_backlight" to GRUB_CMDLINE_LINUX_DEFAULT and NOT to switch off switcheroo
In case I disable switcheroo, I have a bug on shutdown. The screen goes to console printing some errors (logs attached) and freezes (caps lock not blinking). ** Attachment added: "kernel.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1656649/+attachment/4804702/+files/kernel.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1656649 Title: AMDGPU causes kernel panic with To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1656649/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
