This sounds like a kernel problem. And both plymouth and the login
screen do use the same kernel interfaces...
First, please try removing these kernel parameters:
video=efifb fbcon=rotate:1
and if that doesn't solve it please also try changing the kernel
parameter "splash" to "nosplash".
Also you may be able to use this as a workaround for the login screen:
Edit /etc/gdm3/custom.conf and change:
#WaylandEnable=false
to
WaylandEnable=false
** Summary changed:
- No video signal during Ubuntu splash screen and also during Logon procedure
+ [Intel Gemini Lake] No video signal during Ubuntu splash screen and also
during Logon procedure
** Package changed: xorg (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1905184
Title:
[Intel Gemini Lake] No video signal during Ubuntu splash screen and
also during Logon procedure
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