https://bugs.kde.org/show_bug.cgi?id=504239
--- Comment #28 from Andres Hung <andres.h...@outlook.com> ---
Adding a comment to say I've also been experiencing this issue, and that
changing the Color accuracy setting from "Prefer color accuracy" to "Prefer
efficiency" fixed it. Saw it in 6.3.5 as well as 6.4.0. Only using a single
display @144Hz.
inxi -SGaz output:
System:
Kernel: 6.12.34 arch: x86_64 bits: 64 compiler: gcc v: 14.3.0
clocksource: tsc avail: hpet,acpi_pm
parameters:
BOOT_IMAGE=(hd0,gpt1)//kernels/wshpcrckw2rr89rjq5jrliapi6xqsy2c-linux-6.12.34-bzImage
init=/nix/store/w9bfqiyjbdcpnay90ap8fm0qkb2bf55m-nixos-system-AHNIX-25.11.20250619.08f2208/init
loglevel=4 lsm=landlock,yama,bpf
Desktop: KDE Plasma v: 6.4.0 tk: Qt v: N/A info: frameworks v: 6.15.0
wm: kwin_wayland vt: 2 dm: SDDM Distro: NixOS 25.11 (Xantusia)
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900
XTX/7900 GRE/7900M] vendor: Tul / PowerColor driver: amdgpu v: kernel
arch: RDNA-3 code: Navi-3x process: TSMC n5 (5nm) built: 2022+ pcie:
gen: 4 speed: 16 GT/s lanes: 16 ports: active: DP-2 empty: DP-1, DP-3,
HDMI-A-1, Writeback-1 bus-ID: 03:00.0 chip-ID: 1002:744c class-ID: 0300
Device-2: Advanced Micro Devices [AMD/ATI] Raphael vendor: ASUSTeK
driver: amdgpu v: kernel arch: RDNA-2 code: Navi-2x process: TSMC n7 (7nm)
built: 2020-22 pcie: gen: 4 speed: 16 GT/s lanes: 16 ports: active: none
empty: DP-4,HDMI-A-2,Writeback-2 bus-ID: 0e:00.0 chip-ID: 1002:164e
class-ID: 0300 temp: 39.0 C
Display: wayland server: Xwayland v: 24.1.8 compositor: kwin_wayland
driver: gpu: amdgpu display-ID: 0
Monitor-1: DP-2 model: LG (GoldStar) ULTRAGEAR serial: <filter>
built: 2023 res: 2560x1440 dpi: 109 gamma: 1.2 size: 597x336mm
(23.5x13.23")
diag: 685mm (27") ratio: 16:9 modes: max: 2560x1440 min: 640x480
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: radeonsi device: 2 drv: swrast gbm: drv: radeonsi
surfaceless: drv: radeonsi wayland: drv: radeonsi x11: drv: radeonsi
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.1.4 glx-v: 1.4
direct-render: yes renderer: AMD Radeon RX 7900 XT (radeonsi navi31 LLVM
19.1.7 DRM 3.61 6.12.34) device-ID: 1002:744c memory: 19.53 GiB
unified: no display-ID: :0.0
Info: Tools: api: eglinfo,glxinfo de: kscreen-console,kscreen-doctor
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