[Bug 1965563] Re: GNOME apps crash with "Protocol error" in NVIDIA Wayland sessions

[Alessandro Astone]

** Description changed:

  [ Impact ]
  
-  * GTK applications fail to start on a hybrid graphics machine with an
+  * GTK applications fail to start on a hybrid graphics machine with an
  NVIDIA discrete GPU.
  
-  * The NVIDIA egl-wayland extension 1.1.9 only supports rendering to the
+  * The NVIDIA egl-wayland extension 1.1.9 only supports rendering to the
  NVIDIA GPU if it is the primary GPU. On a hybrid system the primary GPU
  would be the integrated graphics, while the NVIDIA GPU should only be
  used for offloading of specific applications. On such a setup, the egl-
  wayland extension still incorrectly advertised the driver as compatible
  and attempted to use the NVIDIA GPU for all EGL applications.
  
-  * To fix the issue, backport a commit from a newer version of the
+  * To fix the issue, backport a commit from a newer version of the
  NVIDIA egl-wayland extension that reports the driver as incompatible
  when the NVIDIA GPU is not the primary GPU. This effectively ensures
  that all EGL applications run on integrated graphics by default.
  
  [ Test Plan ]
  
-  * Set up a hybrid graphics machine with Jammy 22.04 LTS and the
- proprietary NVIDIA drivers 535 or 550.
+  * Set up a hybrid graphics machine with Jammy 22.04 LTS and the
+ proprietary NVIDIA drivers version 535 or 550.
+ 
+  * Install `libnvidia-egl-wayland1` from the update.
+ 
+  * Log-in to a Wayland desktop session.
+ 
+  * Verify that you can start `gnome-text-editor`.
+ 
+ [ Test Plan - Regression ]
+ 
+  * Set up a Desktop with a single NVIDIA GPU with Jammy 22.04 LTS and
+ the proprietary NVIDIA drivers version 470, 535 or 550.
  
   * Install `libnvidia-egl-wayland1` from the update.
  
-  * Log-in to a Wayland desktop session.
+  * Log-in to GNOME Wayland (in Ubuntu Desktop this implies changing the
+ log-in session on the log-in screen)
  
-  * Verify that you can start `gnome-text-editor`.
+  * Verify that `eglinfo | grep -A2 "Wayland platform"` reports "EGL
+ vendor string: NVIDIA"
+ 
+  * Also verify that GNOME applications run smoothly as GPU accelerated.
  
  [ Where problems could occur ]
  
-  * The scope of the change is limited to the NVIDIA proprietary drivers.
+  * The scope of the change is limited to the NVIDIA proprietary drivers.
  
-  * A possible regression would be that the driver starts reporting as
+  * A possible regression would be that the driver starts reporting as
  incompatible on NVIDIA single-GPU systems too. One would notice by all
  wayland-native applications suddenly being very slow. Note that such
  systems would not default to Wayland in Jammy.
  
  [ Original Report ]
  
  $ dpkg-query -W gnome-shell-extension-prefs
  gnome-shell-extension-prefs	42~beta-1ubuntu3
  $ gnome-extensions-app
  Gdk-Message: 17:54:19.697: Error reading events from display: Protocol error
  
  Caveat: I currently have a mix of packages from jammy-release and jammy-
  proposed.

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https://bugs.launchpad.net/bugs/1965563

Title:
  GNOME apps crash with "Protocol error" in NVIDIA Wayland sessions

Status in NVIDIA / egl-wayland:
  Fix Released
Status in GTK+:
  Fix Released
Status in egl-wayland package in Ubuntu:
  Fix Released
Status in egl-wayland source package in Jammy:
  In Progress

Bug description:
  [ Impact ]

   * GTK applications fail to start on a hybrid graphics machine with an
  NVIDIA discrete GPU.

   * The NVIDIA egl-wayland extension 1.1.9 only supports rendering to
  the NVIDIA GPU if it is the primary GPU. On a hybrid system the
  primary GPU would be the integrated graphics, while the NVIDIA GPU
  should only be used for offloading of specific applications. On such a
  setup, the egl-wayland extension still incorrectly advertised the
  driver as compatible and attempted to use the NVIDIA GPU for all EGL
  applications.

   * To fix the issue, backport a commit from a newer version of the
  NVIDIA egl-wayland extension that reports the driver as incompatible
  when the NVIDIA GPU is not the primary GPU. This effectively ensures
  that all EGL applications run on integrated graphics by default.

  [ Test Plan ]

   * Set up a hybrid graphics machine with Jammy 22.04 LTS and the
  proprietary NVIDIA drivers version 535 or 550.

   * Install `libnvidia-egl-wayland1` from the update.

   * Log-in to a Wayland desktop session.

   * Verify that you can start `gnome-text-editor`.

  [ Test Plan - Regression ]

   * Set up a Desktop with a single NVIDIA GPU with Jammy 22.04 LTS and
  the proprietary NVIDIA drivers version 470, 535 or 550.

   * Install `libnvidia-egl-wayland1` from the update.

   * Log-in to GNOME Wayland (in Ubuntu Desktop this implies changing
  the log-in session on the log-in screen)

   * Verify that `eglinfo | grep -A2 "Wayland platform"` reports "EGL
  vendor string: NVIDIA"

   * Also verify that GNOME applications run smoothly as GPU
  accelerated.

  [ Where problems could occur ]

   * The scope of the change is limited to the NVIDIA proprietary
  drivers.

   * A possible regression would be that the driver starts reporting as
  incompatible on NVIDIA single-GPU systems too. One would notice by all
  wayland-native applications suddenly being very slow. Note that such
  systems would not default to Wayland in Jammy.

  [ Original Report ]

  $ dpkg-query -W gnome-shell-extension-prefs
  gnome-shell-extension-prefs	42~beta-1ubuntu3
  $ gnome-extensions-app
  Gdk-Message: 17:54:19.697: Error reading events from display: Protocol error

  Caveat: I currently have a mix of packages from jammy-release and
  jammy-proposed.

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