Created attachment 182283 [details] flickering grey portion of screen SUMMARY Flickering grey bottom portion of the screen that fills a random amount of the screen. Present when refresh rate set to 120Hz but disappears when switching to 60Hz. In some cases it remains longer, this image was taken while most of the screen remained grey until I moved the mouse. Issue only appears to be present with kernel 6.15.* and disappears if I instead load kernel `6.14.6-1-default`. This may in fact be a kernel bug I have not been able to set refresh rates high enough with other DEs to see if they are also affected. STEPS TO REPRODUCE 1. boot KDE plasma 6 with kernel 6.15.* 2. set refresh rate to 120Hz+ 3. use for a minute until it starts flickering OBSERVED RESULT Flickering grey bottom portion of screen, that takes up random amount of the screen. EXPECTED RESULT Stable image. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.3.5 KDE Frameworks Version: 6.14.0 Qt Version: 6.9.1 ADDITIONAL INFORMATION ``` System: Kernel: 6.15.1-1-default arch: x86_64 bits: 64 compiler: gcc v: 14.3.0 clocksource: tsc avail: hpet,acpi_pm parameters: BOOT_IMAGE=/boot/vmlinuz-6.15.1-1-default root=UUID=71572811-269b-4ced-88d0-74f348f8a78f splash=silent quiet security=apparmor amd_pstate=guided mitigations=auto Desktop: KDE Plasma v: 6.3.5 tk: Qt v: N/A info: frameworks v: 6.14.0 wm: kwin_wayland tools: avail: swayidle,swaylock,xscreensaver vt: 2 dm: 1: GDM v: 48.0 2: SDDM note: stopped Distro: openSUSE Tumbleweed 20250612 Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX/7900 GRE/7900M] vendor: XFX RX-79XMERCB9 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-1 empty: DP-2, DP-3, HDMI-A-1, Writeback-1 bus-ID: 2f:00.0 chip-ID: 1002:744c class-ID: 0300 Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.6 compositor: kwin_wayland driver: X: loaded: amdgpu dri: radeonsi gpu: amdgpu display-ID: 0 Monitor-1: DP-1 model: Gigabyte M32UC serial: <filter> built: 2022 res: 3840x2160 dpi: 140 gamma: 1.2 size: 697x392mm (27.44x15.43") diag: 800mm (31.5") ratio: 16:9 modes: max: 3840x2160 min: 720x400 API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi wayland: drv: radeonsi x11: drv: radeonsi API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.1.3 glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 7900 XTX (radeonsi navi31 LLVM 20.1.6 DRM 3.63 6.15.1-1-default) device-ID: 1002:744c memory: 23.44 GiB unified: no display-ID: :0.0 API: Vulkan v: 1.4.313 layers: 8 device: 0 type: discrete-gpu name: AMD Radeon RX 7900 XTX (RADV NAVI31) driver: N/A device-ID: 1002:744c surfaces: N/A device: 1 type: cpu name: llvmpipe (LLVM 20.1.6 256 bits) driver: N/A device-ID: 10005:0000 surfaces: N/A Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo de: kscreen-console,kscreen-doctor gpu: corectrl,radeontop wl: kanshi, swaymsg, wayland-info, wlr-randr x11: xdpyinfo, xprop, xrandr ```
Created attachment 182285 [details] picture of grey zone in gnome under mouse pointer Looks like issue is not KDE specific as I was able to reproduce under Gnome as well. There I noticed that the issue almost always coincided with another issue I reported where the pointer was doubled up, also the grey area always started just below the mouse pointer. Other issue: https://bugs.kde.org/show_bug.cgi?id=505623
Hi - yep, this one looks like it's further upstream in the software stack, possibly somewhere in the interaction between your monitor, graphics card, and the Linux kernel AMD drivers? If this post wasn't you, then you weren't the only one able to reproduce this issue on GNOME as well: https://www.reddit.com/r/gnome/comments/1lbv5f7/flashing_on_main_monitor/ Hope it can be resolved :-)
Yeah, please report this at https://gitlab.freedesktop.org/drm/amd/-/issues