all current nvidia releases support simpledrm since last March, except
390 which has been EOL for some time now

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https://bugs.launchpad.net/bugs/1965303

Title:
  Migrate from fbdev drivers to simpledrm and DRM fbdev emulation layer

Status in gdm package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in nvidia-graphics-drivers-470 package in Ubuntu:
  Fix Released

Bug description:
  The fbdev subsystem has been deprecated for a long time. We should
  drop it in favour of using simpledrm with fbdev emulation layer.

  This requires config changes:

  DRM=y
  DRM_FBDEV_EMULATION=y

  FB_EFI=n
  FB_VESA=n (? check this)

  SYSFB_SIMPLEFB=y

  fbcon will still require FB to be available, but will use the fbdev
  emulation layer

  At the time of filing this bug report, the NVIDIA drivers don't
  support the fbdev emulation layer, so VT's would be broken on them if
  this was to be enabled right now. So the drivers need fixing, and this
  bug report is a placeholder until we are able to move forward.

  
  fedora bug:
  https://bugzilla.redhat.com/show_bug.cgi?id=2022385

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