https://bugs.kde.org/show_bug.cgi?id=500658
Bug ID: 500658
Summary: Black artifacts in plasmashell and KRunner with color
accuracy
Classification: Plasma
Product: kwin
Version: 6.3.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: katze_...@alt-kde.ru
Target Milestone: ---
Created attachment 178793
--> https://bugs.kde.org/attachment.cgi?id=178793&action=edit
Demonstration
SUMMARY
In Plasma 6.3, it is now possible to set "Color accuracy: Prefer color
accuracy." However, for some reason, this causes strange black artifacts in
plasmashell and KRunner on my hardware. These artifacts appear when opening
applets or entering edit mode, flickering rapidly or even flooding the entire
screen.
Switching between desktops temporarily fixes the issue. I tested this on two
different distributions, and it seems to be a hardware-related problem.
Interestingly, there is no black flickering in KWin effects or within
applications themselves.
It may be related to this bug: https://bugs.kde.org/500477
STEPS TO REPRODUCE
1. Go to System Settings, open "Display & Monitor", and set "Color Accuracy:
Prefer color accuracy."
2. Actively interact with plasmashell or KRunner: open applets, enter edit
mode, etc.
OBSERVED RESULT
Black artifacts appear (see video)
SOFTWARE/OS VERSIONS
Operating System: ALT Regular KDE
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.4-6.13-alt1 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-5200U CPU @ 2.20GHz
Memory: 15.5 GiB of RAM
Graphics Processor 1: Mesa Intel® HD Graphics 5500
Graphics Processor 2: llvmpipe
Manufacturer: Acer
Product Name: Aspire E5-573G
System Version: V3.72
$ inxi -Gxxx
Graphics:
Device-1: Intel HD Graphics 5500 vendor: Acer Incorporated ALI driver: i915
v: kernel arch: Gen-8 ports: active: HDMI-A-1 empty: DP-1 bus-ID: 00:02.0
chip-ID: 8086:1616 class-ID: 0300
Device-2: NVIDIA GM108M [GeForce 940M] vendor: Acer Incorporated ALI
driver: nvidia v: 570.86.16 arch: Maxwell pcie: speed: 5 GT/s lanes: 4
bus-ID: 04:00.0 chip-ID: 10de:1347 class-ID: 0302
Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.5
compositor: kwin_wayland driver: X: loaded: modesetting,nvidia
unloaded: fbdev,nouveau,vesa alternate: nv dri: iris gpu: i915
display-ID: 0
Monitor-1: HDMI-A-1 model: Huawei SSN-24 res: mode: 1920x1080 hz: 75
scale: 100% (1) dpi: 93 size: 527x296mm (20.75x11.65") diag: 604mm (23.8")
modes: max: 1920x1080 min: 720x400
API: EGL v: 1.5 hw: drv: intel iris drv: nvidia platforms: device: 0
drv: nvidia gbm: drv: nvidia surfaceless: drv: nvidia wayland: drv: iris
x11: drv: iris
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: intel mesa v: 24.3.4 glx-v: 1.4
direct-render: yes renderer: Mesa Intel HD Graphics 5500 (BDW GT2)
device-ID: 8086:1616 display-ID: :1.0
API: Vulkan v: 1.4.304 layers: 9 surfaces: xcb,xlib,wayland device: 0
type: integrated-gpu driver: N/A device-ID: 8086:1616 device: 1
type: discrete-gpu driver: N/A device-ID: 10de:1347 device: 2 type: cpu
driver: N/A device-ID: 10005:0000
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: nvidia-settings,nvidia-smi
wl: wayland-info x11: xdpyinfo, xprop, xrandr
However, on THIS equipment the problem does NOT occur:
Operating System: EndeavourOS
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.3-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × Intel® Xeon® CPU E5-2640 v3 @ 2.60GHz
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 470 Graphics
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Ellesmere [Radeon RX
470/480/570/570X/580/580X/590] vendor: PC Partner / Sapphire
driver: amdgpu v: kernel arch: GCN-4 pcie: speed: 8 GT/s lanes: 16 ports:
active: HDMI-A-2 empty: DP-1, DP-2, DVI-D-1, HDMI-A-1 bus-ID: 03:00.0
chip-ID: 1002:67df class-ID: 0300 temp: 47.0 C
Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.5
compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting
alternate: fbdev,vesa dri: radeonsi gpu: amdgpu display-ID: 0
Monitor-1: HDMI-A-2 model: Huawei AD80HW res: mode: 1920x1080 hz: 75
scale: 100% (1) dpi: 93 size: 527x296mm (20.75x11.65") diag: 604mm (23.8")
modes: max: 1920x1080 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: 24.3.4-arch1.1
glx-v: 1.4 direct-render: yes renderer: AMD Radeon RX 470 Graphics
(radeonsi polaris10 LLVM 19.1.7 DRM 3.60 6.13.3-zen1-1-zen)
device-ID: 1002:67df display-ID: :1.0
API: Vulkan v: 1.4.303 layers: 4 surfaces: xcb,xlib,wayland device: 0
type: discrete-gpu driver: N/A device-ID: 1002:67df
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor wl: wayland-info
x11: xdpyinfo, xprop, xrandr
Operating System: EndeavourOS
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.1-1-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5825U with Radeon Graphics
Memory: 5.6 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 82RN
System Version: IdeaPad 3 15ABA7
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Barcelo vendor: Lenovo
driver: amdgpu v: kernel arch: GCN-5 pcie: speed: 8 GT/s lanes: 16 ports:
active: eDP-1 empty: DP-1,HDMI-A-1 bus-ID: 04:00.0 chip-ID: 1002:15e7
class-ID: 0300 temp: 31.0 C
Device-2: Syntek Integrated Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 bus-ID: 1-3:2 chip-ID: 174f:2465 class-ID: fe01
serial: 0001
Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.5
compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting
alternate: fbdev,vesa dri: radeonsi gpu: amdgpu display-ID: 0
Monitor-1: eDP-1 model: Lenovo 0x9052 res: mode: 1920x1080 hz: 60
scale: 125% (1.25) to: 1536x864 dpi: 142 size: 344x193mm (13.54x7.6")
diag: 394mm (15.5") modes: max: 1920x1080 min: 640x480
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: 24.3.4-arch1.1
glx-v: 1.4 direct-render: yes renderer: AMD Radeon Graphics (radeonsi
renoir LLVM 19.1.7 DRM 3.59 6.13.1-1-cachyos) device-ID: 1002:15e7
display-ID: :1.0
API: Vulkan v: 1.4.303 layers: 9 surfaces: xcb,xlib,wayland device: 0
type: integrated-gpu driver: N/A device-ID: 1002:15e7
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor gpu: corectrl wl: wayland-info
x11: xdpyinfo, xprop, xrandr
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