https://bugs.kde.org/show_bug.cgi?id=512769
Bug ID: 512769
Summary: Repeatable System crash with dual NvGPUs
Classification: Applications
Product: Haruna
Version First 1.4.0
Reported In:
Platform: KDE Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Dual NVIDIA GPU System, where one GPU is headless and only for compute, will
hang irreparably when launching Haruna. 100% reproducible.
STEPS TO REPRODUCE
1. I have a fully configured dual NvGPU system. (see Additional Details)
2. Launch Haruna with any video media.
3. The system will immediately hang irrecoverably.
OBSERVED RESULT
Results in a complete graphics stack crash. All screens freeze. TTY
unavailable. SSH into system is possible, but kill/pkill -9 doesn't work on any
Wayland-related application.
A restart/reboot is NOT vasufficient. Complete power cycle is required to get
the system back up.
EXPECTED RESULT
Do not crash the graphics stack.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 25.10 (Wayland)
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.20.0
Qt Version: 6.9.2
ADDITIONAL INFORMATION
> mpv --list-options | grep device
--alsa-mixer-device String (default: default)
--audio-device String (default: auto)
--bluray-device String (default: ) [file]
--cdda-device String (default: ) [file]
--cuda-decode-device Choices: auto (or an integer) (0 to
2147483647) (default: auto)
--drm-device String (default: ) [file]
--dvd-device String (default: ) [file]
--vaapi-device String (default: /dev/dri/renderD128) <--
probably wrong GPU
--vulkan-device String (default: )
---
> vainfo
Trying display: wayland
libva info: VA-API version 1.22.0
libva info: User environment variable requested driver 'nvidia'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_1_0
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.22 (libva 2.22.0)
vainfo: Driver version: VA-API NVDEC driver [direct backend]
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileH264Main : VAEntrypointVLD
VAProfileH264High : VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointVLD
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain12 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointVLD
VAProfileHEVCMain444 : VAEntrypointVLD
VAProfileHEVCMain444_10 : VAEntrypointVLD
VAProfileHEVCMain444_12 : VAEntrypointVLD
---
> MESA_VK_DEVICE_SELECT=list vulkaninfo
selectable devices:
GPU 0: 10de:1b06 "NVIDIA GeForce GTX 1080 Ti" discrete GPU 0000:04:00.0 <--
is headless
GPU 1: 10de:1e84 "NVIDIA GeForce RTX 2070 SUPER" discrete GPU 0000:05:00.0
<-- dual monitors
GPU 2: 10005:0 "llvmpipe (LLVM 20.1.8, 256 bits)" CPU 0000:00:00.0
---
> nvidia-smi
Sat Nov 29 12:40:38 2025
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 580.95.05 Driver Version: 580.95.05 CUDA
Version: 13.0 |
+-----------------------------------------+------------------------+----------------------+
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile
Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util
Compute M. |
| | |
MIG M. |
|=========================================+========================+======================|
| 0 NVIDIA GeForce GTX 1080 Ti Off | 00000000:04:00.0 Off |
N/A |
| 0% 25C P8 8W / 250W | 1213MiB / 11264MiB | 0%
Default |
| | |
N/A |
+-----------------------------------------+------------------------+----------------------+
| 1 NVIDIA GeForce RTX 2070 ... Off | 00000000:05:00.0 On |
N/A |
| 12% 55C P0 51W / 215W | 1554MiB / 8192MiB | 0%
Default |
| | |
N/A |
+-----------------------------------------+------------------------+----------------------+
+-----------------------------------------------------------------------------------------+
| Processes:
|
| GPU GI CI PID Type Process name
GPU Memory |
| ID ID
Usage |
|=========================================================================================|
| 0 N/A N/A 7358 C dsnote
1208MiB |
| 1 N/A N/A 2536 G /usr/lib/xorg/Xorg
15MiB |
| 1 N/A N/A 2820 G /usr/bin/kwin_wayland
466MiB |
| 1 N/A N/A 2889 G /usr/bin/Xwayland
3MiB |
| 1 N/A N/A 2931 G /usr/bin/ksmserver
2MiB |
...
Note that Xorg is not on headless display
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