Fix very long boot time after migrated to Debian Buster 64bit

The fix

After migrating from Emmabuntüs 32bit to Emmabuntüs 64bit, boot time was very long and the following messages were shown: [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]] *ERROR* [CRTC:41:pipe B] flip_done timed out [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:35:plane B] flip_done timed out The problem can be fixed by modifying grub configuration. Open /etc/default/grub, then change the GRUB_CMDLINE_LINUX_DEFAULT line: GRUB_CMDLINE_LINUX_DEFAULT="video=SVIDEO-1:d quiet splash" Then run: sudo update-grub On next reboot, you should see the difference.


SOLVED - Very long boot time and error messages on LM19