Bug#956121: Issue persists in 40.4

[Damián Cinich]

Hi everyone,

I'm facing exactly the same issue in GNOME 40. Same symptoms: The screen in
the second display is entirely blank, except for the mouse pointer which I
can move. I'm not using proprietary nvidia drivers, just Wayland, Nouveau,
Mutter, on GNOME 40.

Here's some environmental information:

Versions:

===
$ dpkg -l xserver-xorg-video-nouveau mutter xwayland
Desired=Unknown/Install/Remove/Purge/Hold
|
Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                       Version      Architecture Description
+++-==========================-============-============-===========================================================
ii  mutter                     40.4-2+b1    amd64        Example window
manager using GNOME's window manager library
ii  xserver-xorg-video-nouveau 1:1.0.17-1   amd64        X.Org X server --
Nouveau display driver
ii  xwayland                   2:1.20.11-1  amd64        Xwayland X server
===

Devices:

===
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev
04)
01:00.0 VGA compatible controller: NVIDIA Corporation GM107GLM [Quadro
M1200 Mobile] (rev a2)
===

Info from reportbug:

===
-- System Information:
Debian Release: bookworm/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.14.0-1-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE
not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages mutter depends on:
ii  adwaita-icon-theme            41.0-1
ii  gnome-settings-daemon-common  40.0.1-2
ii  gsettings-desktop-schemas     41.0-1
ii  libc6                         2.32-4
ii  libgles2                      1.3.4-2+b1
ii  libglib2.0-0                  2.70.0-1
ii  libmutter-8-0                 40.4-2+b1
ii  libwayland-client0            1.19.0-2
ii  libx11-6                      2:1.7.2-2+b1
ii  libxcomposite1                1:0.4.5-1
ii  mutter-common                 40.4-2
ii  zenity                        3.41.0-2

mutter recommends no packages.

Versions of packages mutter suggests:
ii  gnome-control-center  1:40.1-1
ii  xdg-user-dirs         0.17-2

-- no debconf information
===
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