Hello jeremyszu, or anyone else affected,

Accepted nvidia-graphics-drivers-470 into impish-proposed. The package
will build now and be available at
https://launchpad.net/ubuntu/+source/nvidia-graphics-
drivers-470/470.82.00-0ubuntu0.21.10.1 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
impish to verification-done-impish. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-impish. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: nvidia-graphics-drivers-470 (Ubuntu Impish)
       Status: New => Fix Committed

** Tags added: verification-needed verification-needed-impish

** Changed in: nvidia-graphics-drivers-470 (Ubuntu Hirsute)
       Status: New => Fix Committed

** Tags added: verification-needed-hirsute

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu.
https://bugs.launchpad.net/bugs/1949026

Title:
  System hangs on purple screen

Status in OEM Priority Project:
  Triaged
Status in nvidia-graphics-drivers-470 package in Ubuntu:
  New
Status in nvidia-graphics-drivers-470 source package in Focal:
  Fix Committed
Status in nvidia-graphics-drivers-470 source package in Hirsute:
  Fix Committed
Status in nvidia-graphics-drivers-470 source package in Impish:
  Fix Committed

Bug description:
  [Impact]

   * In some race condition, the GDM starts before gdm-udev rule be applied.
   * That's because somehow the nvidia driver takes more times to do the 
runtime resume. Thus, apply the workaround to postpone to enable RTD3.

  [Test Plan]

   1. In problematic machine, warn/cold boot the system.
   2.1 System hangs on GDM login shell
   2.2 After apply this patch, the system can enter the login screen.

  [Where problems could occur]

   * Postpone to enable RTD3 when binding driver should not impact the
  functionality since the power consumption usually not be consider in
  booting stage.

  ---

  We are facing an issue that GDM starts with Wayland instead of Xorg,
  despite of 61-gdm.rules' gdm-disable-wayland for NVIDIA graphics.

  The issue happens because gdm-disable-wayland is executed after GDM has
  started. The reason why the udev rules takes so long is because the the
  runtime suspended NVIDIA GFX takes more than 1 second to runtime resume,
  hence the driver starts the probing routine rather late.

  The proper solution is to impose a barrier like
  systemd-udev-settle.service before GDM, but limits to the GFX device
  only to avoid waiting for all udev rules are finished.

  Since such mechanism isn't available right now, workaround the issue by
  enabling runtime PM after driver is bound to avoid the runtime resume
  delay, and hope GDM always starts after the probing is done.

  Please backport below patch to supported nvidia-drivers:
  
https://github.com/tseliot/nvidia-graphics-drivers/pull/41/commits/7e9e4d4a827dc9da0e27058871034245ae4b7508

To manage notifications about this bug go to:
https://bugs.launchpad.net/oem-priority/+bug/1949026/+subscriptions


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