Public bug reported:

My C++ application using FLTK on Wayland (a video player and review

sometimes stops playback randomly.

The problem occurs with:

- Wayland (XWayland and X11 is fine)
- libndivia-egl-wayland1 installed for OpenGL acceleration (Mesa works fine but 
cannot play 4K)

It is not yet clear if the problem is with EGL or FLTK's use of it.  The
FLTK Wayland developer lacks an NVidia graphics card so he cannot
troubleshoot it.  I am hoping Ubuntu's developers or, if you have NVidia
contacts, can verify whether it is a driver issue or an FLTK issue.

To quickly compile my application for testing, clone the repository and
from the root of it, run:

mkdir -p ~/bin
./bin/ (for the most minimal player that should take 8 mins 
to compile)

A link to the .sh executable will be placed on ~/bin.

If you want to compile a debug build, run:

./bin/ debug

To test the problem, run:

mrv2 or mrv2-dbg (assuming ~/bin is in your PATH).

with a an .mp4 movie file -- size does not seem to matter (sometimes it
will stop right away, other times it takes some time to do so -- it
seems random):

mrv2 movie.mp4



The problem seems to be that EGL/Wayland freezes due to a server lock,
which prevents the FLTK's timeout callbacks from running (so there's no
video or timeline updates until the user interacts -- moving the mouse
releases the freeze).

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: xorg 1:7.7+23ubuntu2
ProcVersionSignature: Ubuntu 6.5.0-18.18~22.04.1-generic 6.5.8
Uname: Linux 6.5.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.capabilities.gpu0: Error: path was not a regular file.
.proc.driver.nvidia.capabilities.mig: Error: path was not a regular file.
.proc.driver.nvidia.gpus.0000.09.00.0: Error: path was not a regular file.
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  535.171.04  Tue Mar 19 
20:30:00 UTC 2024
 GCC version:  gcc version 12.3.0 (Ubuntu 12.3.0-1ubuntu1~22.04)
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
BootLog: Error: [Errno 13] Permiso denegado: '/var/log/boot.log'
CasperMD5CheckResult: pass
CompizPlugins: No value set for 
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Thu May 16 19:41:21 2024
DistUpgraded: Fresh install
DistroCodename: jammy
DistroVariant: ubuntu
 nvidia/535.171.04, 6.5.0-18-generic, x86_64: installed
 nvidia/535.171.04, 6.5.0-35-generic, x86_64: installed
ExtraDebuggingInterest: Yes
 NVIDIA Corporation GA102 [GeForce RTX 3080 Lite Hash Rate] [10de:2216] (rev 
a1) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd GA102 [GeForce RTX 3080 Lite Hash 
Rate] [1458:404b]
InstallationDate: Installed on 2023-03-13 (430 days ago)
InstallationMedia: Ubuntu 22.04.2 LTS "Jammy Jellyfish" - Release amd64 
MachineType: Gigabyte Technology Co., Ltd. B450M DS3H WIFI
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-18-generic 
root=UUID=c818488b-5ecb-4753-90ba-6dcfb95c3ed3 ro quiet splash
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install) 07/20/2022
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: F64d
dmi.board.asset.tag: Default string B450M DS3H WIFI-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi:bvnAmericanMegatrendsInternational,LLC.:bvrF64d:bd07/20/2022:br5.17:svnGigabyteTechnologyCo.,Ltd.:pnB450MDS3HWIFI:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB450MDS3HWIFI-CF:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:skuDefaultstring: B450 MB B450M DS3H WIFI
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 23.2.1-1ubuntu3.1~22.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 23.0.4-0ubuntu1~22.04.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug false-gpu-hang freeze jammy 
possible-manual-nvidia-install ubuntu wayland-session

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  Wayland freeze with libnvidia-egl-wayland1 package installed

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