My screen is flickering blinking to black when i move my mouse cursor.
Same both on my HTPC and main PC.
I just did an update and i did get an weird kernel panic error(blue one) and system rebooted.
After this my mouse issue showed up.
Luckily no bricked system. 
I did reinstalld graphics drivers as well as Linux kernel + LTS after.
Rebooted
But issue persists.
Any ideas?
Logs:(From my HTPC)
Seems to be a KDE 6.8 issue. I don’t run KDE, but according to this bug report, a workaround is setting this:
> ~/.config/environment.d/99-kwin-flicker.conf:
>
> KWIN_USE_BUFFER_AGE=0
> KWIN_DRM_FORCE_GL_FINISH_PRESENT=1
> KWIN_FORCE_SW_CURSOR=1
>
> ~/.config/kwinrc:
>
> [Plugins]
> shakecursorEnabled=false
Possibly related:
I had this when 6.8 was released. The update to kwin 6.8.2 fixed the flickering around the cursor for me.
OK well I’ll try that next time I’m at my HTPC.
My system is up to date so it’s not fixed yet.
I can also still reproduce the flickers/black screen with mouse movement on 6.8.2 - its not fixed.
inxi -F
System:
Host: 8570w Kernel: 7.2.14-arch1-1 arch: x86_64 bits: 64
Desktop: KDE Plasma v: 6.8.2 Distro: EndeavourOS
Machine:
Type: Laptop System: Hewlett-Packard product: HP EliteBook 8570w
v: A1029D1103 serial: <superuser required>
Mobo: Hewlett-Packard model: 176B v: KBC Version 50.1F
serial: <superuser required> Firmware: BIOS vendor: Hewlett-Packard
v: 68IAV Ver. F.71 date: 04/19/2019
Battery:
ID-1: BAT0 charge: 21.6 Wh (100%) condition: 21.6/21.6 Wh (100%) volts: 7.47
min: 14.8
CPU:
Info: quad core model: Intel Core i7-3840QM bits: 64 type: MT MCP cache:
L2: 1024 KiB
Speed (MHz): avg: 1200 min/max: 1200/3800 cores: 1: 1200 2: 1200 3: 1200
4: 1200 5: 1200 6: 1200 7: 1200 8: 1200
Graphics:
Device-1: NVIDIA GK107GLM [Quadro K2000M] driver: nouveau v: kernel
Device-2: Chicony Integrated HP HD Webcam driver: uvcvideo type: USB
Display: wayland server: X.org v: 1.21.1.25 with: Xwayland v: 24.1.14
compositor: kwin_wayland driver: X: loaded: modesetting dri: nouveau
gpu: nouveau resolution: 1920x1080~60Hz
API: EGL v: 1.5 drivers: nouveau,swrast
platforms: gbm,wayland,x11,surfaceless,device
API: OpenGL v: 4.6 compat-v: 4.3 vendor: mesa v: 26.2.6-arch1.1
renderer: NVE7
API: Vulkan v: 1.4.363 drivers: nvk surfaces: N/A
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor wl: wayland-info
x11: xdpyinfo, xprop, xrandr
Hmmm, I wonder if it related to the Nvidia GPU drivers. I don’t have a Nvidia GPU.
“Common seems to be usage of the nouveau driver and nvidia cards.”
inxi -F
System:
Host: UM890 Kernel: 7.2.14-zen1-1-zen arch: x86_64 bits: 64
Desktop: KDE Plasma v: 6.8.2 Distro: EndeavourOS
Machine:
Type: Mini-pc System: Micro (HK) Tech product: EliteMini Series v: 1.0
serial: <superuser required>
Mobo: Meigao Innovation (Shen Zhen) model: HPBSD v: 1.0
serial: <superuser required> Firmware: UEFI vendor: American Megatrends LLC.
v: 1.06 date: 11/10/2025
CPU:
Info: 8-core model: AMD Ryzen 9 PRO 8945HS w/ Radeon 780M Graphics bits: 64
type: MT MCP cache: L2: 8 MiB
Speed (MHz): avg: 1512 min/max: 403/5263 cores: 1: 1512 2: 1512 3: 1512
4: 1512 5: 1512 6: 1512 7: 1512 8: 1512 9: 1512 10: 1512 11: 1512 12: 1512
13: 1512 14: 1512 15: 1512 16: 1512
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] HawkPoint1 driver: amdgpu
v: kernel
Display: wayland server: Xwayland v: 24.1.14 compositor: kwin_wayland
driver: gpu: amdgpu resolution: 3840x2160~144Hz
API: EGL v: 1.5 drivers: radeonsi,swrast
platforms: gbm,wayland,x11,surfaceless,device
API: OpenGL v: 4.6 vendor: amd mesa v: 26.2.6-arch1.1 renderer: AMD
Radeon 780M Graphics (radeonsi phoenix ACO DRM 3.64 7.2.14-zen1-1-zen)
API: Vulkan v: 1.4.363 drivers: radv surfaces: N/A
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor wl: wayland-info
x11: xdpyinfo, xprop, xrandr
Audio:
Device-1: Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
driver: snd_hda_intel
Device-2: Advanced Micro Devices [AMD] Audio Coprocessor
driver: snd_pci_ps
Device-3: Advanced Micro Devices [AMD] Ryzen HD Audio
driver: snd_hda_intel
API: ALSA v: k7.2.14-zen1-1-zen status: kernel-api
Server-1: PipeWire v: 1.6.10 status: active
Network:
Device-1: Realtek RTL8125 2.5GbE driver: r8169
IF: enp2s0 state: up speed: 2500 Mbps duplex: full mac: 38:05:25:35:82:2f
Device-2: Realtek RTL8125 2.5GbE driver: r8169
IF: enp3s0 state: down mac: 38:05:25:35:82:2e
Device-3: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
driver: mt7921e
IF: wlan0 state: down mac: 22:53:0c:80:54:d7
IF-ID-1: tailscale0 state: unknown speed: -1 duplex: full mac: N/A
IF-ID-2: virbr0 state: down mac: 52:54:00:16:a2:95
Bluetooth:
Device-1: MediaTek Wireless_Device driver: btusb type: USB
Report: btmgmt ID: hci0 rfk-id: 0 state: down bt-service: disabled
rfk-block: hardware: no software: no address: N/A
Drives:
Local Storage: total: 3.73 TiB used: 520.13 GiB (13.6%)
ID-1: /dev/nvme0n1 vendor: HP model: SSD FX900 Pro 4TB size: 3.73 TiB
Partition:
ID-1: / size: 3.66 TiB used: 519.78 GiB (13.9%) fs: btrfs
dev: /dev/nvme0n1p2
ID-2: /home size: 3.66 TiB used: 519.78 GiB (13.9%) fs: btrfs
dev: /dev/nvme0n1p2
ID-3: /var/log size: 3.66 TiB used: 519.78 GiB (13.9%) fs: btrfs
dev: /dev/nvme0n1p2
Swap:
ID-1: swap-1 type: partition size: 66.68 GiB used: 0 KiB (0.0%)
dev: /dev/nvme0n1p3
Sensors:
System Temperatures: cpu: 36.8 C mobo: N/A gpu: amdgpu temp: 31.0 C
Fan Speeds (rpm): N/A
Info:
Memory: total: 64 GiB note: est. available: 60.61 GiB used: 5.02 GiB (8.3%)
Processes: 391 Uptime: 16m Shell: fish inxi: 3.3.41
No it’s not. I have 3 different machines, 2 uses nvidia (3070 TI and GTX 1070). Both machines with the nvidia drivers are working just fine.