This bug is awaiting verification that the linux-nvidia-
tegra/6.8.0-1001.1 kernel in -proposed solves the problem. Please test
the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-noble-linux-nvidia-tegra' to
'verification-done-noble-linux-nvidia-tegra'. If the problem still
exists, change the tag 'verification-needed-noble-linux-nvidia-tegra' to
'verification-failed-noble-linux-nvidia-tegra'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-nvidia-tegra-v2 
verification-needed-noble-linux-nvidia-tegra

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1965303

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

Status in gdm:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in nvidia-graphics-drivers-470 package in Ubuntu:
  Fix Released
Status in linux source package in Jammy:
  Won't Fix
Status in nvidia-graphics-drivers-470 source package in Jammy:
  Fix Released
Status in linux source package in Lunar:
  Won't Fix
Status in nvidia-graphics-drivers-470 source package in Lunar:
  Fix Released
Status in linux source package in Mantic:
  Won't Fix
Status in nvidia-graphics-drivers-470 source package in Mantic:
  Fix Released
Status in linux source package in Noble:
  Fix Released
Status in nvidia-graphics-drivers-470 source package in Noble:
  Fix Released
Status in linux package in Fedora:
  Fix Released

Bug description:
  [ Impact ]

  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 Kernel config changes:

  FB_EFI=n
  FB_VESA=n

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

  [ Test Plan ]

  * Ensure that systems currently relying on fbdev (and therefore only
  allowing Xorg logins) such as some virtual machine types, boot with
  working Wayland support.

  [ Where Problems could occur ]

  * When this stack is enabled, it changes boot timing such that some drivers 
may take a longer time to boot and GDM may hang in a black screen (bug 2039757).
  * Race conditions could be exposed to DE environments
  * Software that expects to find DRM device at /dev/dri/card0 may have a 
problem.
  * Some older versions of NVIDIA driver might not work properly.

  [ Other Info ]

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

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