Bug partial fixes
Drm kms helper error
If your computer doesn't boot and appears this message:
[drm:drm_atomic_helper_commit_cleanup_done [drm_kms_helper]] *ERROR* [CRTC:26:pipe A] flip_done timed out
Put a netinst usb and boot it with f12 key.
In the menu select advanced mode and then rescue mode.
Select your language.
When it asks you to select your primary network interface select go back option and then in the menu select Enter rescue mode.
In the menu select the partition where you mounted root (e.g. /dev/sda1) and select execute shell in /dev/sda1 option. Then you will have a shell, enter this command:
# nano /etc/default/grub
Add video=SVIDEO-1:d in the end of GRUB_CMDLINE_LINUX_DEFAULT line so if you had something like this:
You will have it like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video=SVIDEO-1:d"
Save the file and exit and then:
Don't worry if there's an error that says can't find grub unit in /dev/sdb1 for example where /dev/sdb is your usb.
In the menu select reboot system.