Arch Linux

BogBody

Member

Registered: 2025-04-05

Posts: 1

KDE Plasma crashes with Ryzen 9 7900X

I'm trying to use my processor's integrated graphics with Arch/KDE Plasma (ideally Wayland but this happens on both Wayland and X11). I'm experiencing many graphics resets, or outright crashes of the desktop environment to the login screen, and I don't know how to fix it. Currently I am running with no hardware acceleration, using llvmpipe (LIBGL_ALWAYS_SOFTWARE=1 and QT_QUICK_BACKEND=software), this produces zero crashes but looks ugly and runs a little slow. I've been using Linux for some time, but generally only in a command line environment (server work). I'm new to Arch and new to dealing with graphics on Linux.

I do have a NVidia 5070ti installed, but I am handing it over to a Win11 VM using passthrough, it is not active for the Arch installation:

$ lspci -nnk | grep -A3 -i vga
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GB203 [GeForce RTX 5070 Ti] [10de:2c05] (rev a1)
        Subsystem: ASUSTeK Computer Inc. Device [1043:89f4]
        Kernel driver in use: vfio-pci
        Kernel modules: nouveau
--
76:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Raphael [1002:164e] (rev c2)
        Subsystem: ASRock Incorporation Device [1849:364e]
        Kernel driver in use: amdgpu
        Kernel modules: amdgpu

The idea is to have Windows running on one monitor (using the dedicated GPU), and Arch in another monitor (using integrated AMD graphics).

I have read this https://wiki.archlinux.org/title/Ryzen

I'm running on the latest Arch kernel:

$ uname -r
6.13.8-arch1-1

but I also tried running on linux-lts -- no difference.

Some relevant packages:

$ pacman -Q | grep -E "vulkan|amd|mesa|libdrm|llvm"
amd-ucode 20250311.b69d4b74-3
libdrm 2.4.124-1
llvm 19.1.7-1
llvm-libs 19.1.7-1
mesa 1:25.0.2-2
mesa-demos 9.0.0-5
mesa-utils 9.0.0-5
vulkan-headers 1:1.4.309.0-1
vulkan-icd-loader 1.4.309.0-1
vulkan-radeon 1:25.0.2-2
vulkan-tools 1.4.309.0-1
xf86-video-amdgpu 23.0.0-2

Everything is otherwise fully updated.

coredumpctl shows these crashes:

Sat 2025-04-05 09:25:37 MDT   1124 1000 1000 SIGABRT present      /usr/bin/ksplashqml                 4.5M
Sat 2025-04-05 09:25:38 MDT   1331 1000 1000 SIGABRT present      /usr/bin/plasmashell               22.5M
Sat 2025-04-05 09:25:52 MDT   2299 1000 1000 SIGABRT present      /usr/bin/plasmashell               24.2M
Sat 2025-04-05 09:34:42 MDT   1134 1000 1000 SIGABRT present      /usr/bin/ksplashqml                 3.8M
Sat 2025-04-05 09:34:43 MDT   1342 1000 1000 SIGABRT present      /usr/bin/plasmashell               18.7M

Here is a journalctl log of one of these crashes: https://0x0.st/8_KH.txt
Here is a DrKonqi output for plasmashell from the same crash: https://0x0.st/8_K-.json

I appreciate any help. Please let me know what other useful information I can attach.