DESCRIPTION System freezes completely when changing brightness using the Plasma Brightness and Color widget. The freeze mostly occurs after startup when using keyboard brightness hotkeys or widget. The system becomes unresponsive and requires a hard power-off. STEPS TO REPRODUCE 1. Connect an external monitor via HDMI. 2. Log into a Plasma Wayland session. 3. Open the Brightness and Color widget and move either brightness slider (or press brightness hotkeys). OBSERVED RESULT The entire system freezes. Mouse, keyboard, and desktop stop responding. A hard power-off is required. EXPECTED RESULT Brightness should change normally without freezing the system. SOFTWARE/OS VERSIONS Operating System: Fedora Linux 44 KDE Plasma Version: 6.7.0 KDE Frameworks Version: 6.27.0 Qt Version: 6.11.1 Kernel Version: 7.0.12-201.fc44.x86_64 (64-bit) Graphics Platform: Wayland
I also noticed it, seemingly randomly, if I change the brightness by scrolling on the icon in the system tray, the built-in monitor freezes and becomes white, while the external monitor freezes in place. No key combinations work, only rebooting holding down the power button. After rebooting it's fine. If media was playing when it happens, it keeps playing during the freeze. DISPLAYS Output: 1 HDMI-A-1 094af994-325a-472f-8c9f-2b8ef9b9812a enabled connected priority 1 HDMI replication source:0 Modes: 1:1920x1080@60.00! 2:1920x1080@60.00* 3:1920x1080@59.94 4:1920x1080@50.00 5:1600x1200@60.00 6:1680x1050@59.95 7:1280x1024@75.03 8:1280x1024@60.02 9:1440x900@59.89 10:1280x720@59.94 11:1280x720@50.00 12:1024x768@75.03 13:1024x768@60.00 14:800x600@75.00 15:800x600@60.32 16:800x600@56.25 17:720x576@50.00 18:720x480@59.94 19:640x480@75.00 20:640x480@72.81 21:640x480@59.94 22:640x480@59.93 Custom modes: None Geometry: 0,0 1920x1080 Scale: 1 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: incapable Wide Color Gamut: incapable ICC profile: none Color profile source: EDID Color power preference: prefer efficiency and performance Brightness control: supported, set to 34% and dimming to 100% DDC/CI: allowed Color resolution: unknown Allow EDR: unsupported Sharpness control: unsupported Automatic brightness: unsupported Auto Rotate Policy: incapable Adaptive backlight modulation: unsupported Output: 2 eDP-1 efd88d26-5b49-422a-b003-6a751b915f08 enabled connected priority 2 Panel replication source:0 Modes: 23:2560x1600@165.00*! 24:2560x1600@60.00 25:1920x1200@165.00 26:1920x1080@165.00 27:1600x1200@165.00 28:1680x1050@165.00 29:1280x1024@165.00 30:1440x900@165.00 31:1280x800@165.00 32:1280x720@165.00 33:1024x768@165.00 34:800x600@165.00 35:640x480@165.00 36:1600x1200@59.87 37:1280x1024@59.90 38:1024x768@59.92 39:1920x1200@59.88 40:1280x800@59.81 41:2560x1440@59.96 42:2560x1440@164.90 43:1920x1080@59.96 44:1600x900@59.95 45:1600x900@164.77 46:1368x768@59.88 47:1368x768@164.98 48:1280x720@59.85 Custom modes: None Geometry: 1920,13 1707x1067 Scale: 1.5 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: enabled SDR brightness: 930 nits SDR gamut wideness: 85% Peak brightness: 1015 nits, overridden with: 1450 nits Max average brightness: 508 nits Min brightness: 0.0006 nits HDR color profile source: EDID HDR ICC profile: none Wide Color Gamut: enabled ICC profile: none Color profile source: EDID Color power preference: prefer accuracy Brightness control: supported, set to 21% and dimming to 100% Color resolution: automatic (16), range: [8; 16] bits per color Allow EDR: unsupported Sharpness control: unsupported Automatic brightness: unsupported Auto Rotate Policy: incapable Adaptive backlight modulation: unsupported SOFTWARE/OS VERSIONS Operating System: Fedora Linux 44 KDE Plasma Version: 6.7.0 KDE Frameworks Version: 6.27.0 Qt Version: 6.11.1 Kernel Version: 7.0.12-201.fc44.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 260 w/ Radeon 780M Graphics Graphics Processor 1: AMD Radeon 780M Graphics Graphics Processor 2: NVIDIA GeForce RTX 5060 Laptop GPU Manufacturer: LENOVO
There was a fix for an NVIDIA fault which was triggered by this behavior in bug 521727. It should be fixed in 6.7.1. Can either of you reproduce this bug with that Plasma version?
Recently updated to Plasma 6.7.1, so far no freezes 😁
🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME. For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging. Thank you for helping us make KDE software even better for everyone!
🐛🧹 This bug has been in NEEDSINFO status with no change for at least 30 days. Closing as RESOLVED WORKSFORME.