Notes
How to fix “[drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]] flip_done timed out” error
$ sudo vi /etc/default/grub
add video=SVIDEO-1:d
to params of GRUB_CMDLINE_LINUX_DEFAULT
$ sudo update-grub
$ sudo vi /etc/default/grub
add video=SVIDEO-1:d
to params of GRUB_CMDLINE_LINUX_DEFAULT
$ sudo update-grub