| Summary: | after sleep, brightness of external monitor is not restored correctly | ||
|---|---|---|---|
| Product: | [Plasma] Powerdevil | Reporter: | slartibart70 |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | kde, natalie_clarius, nate |
| Priority: | NOR | ||
| Version: | 6.2.2 | ||
| Target Milestone: | --- | ||
| Platform: | Fedora RPMs | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
Operating System: Fedora Linux 40 KDE Plasma Version: 6.2.2 KDE Frameworks Version: 6.7.0 Qt Version: 6.7.2 Kernel Version: 6.11.5-200.fc40.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 PRO 7840U w/ Radeon 780M Graphics Memory: 58,5 GiB of RAM Graphics Processor: AMD Radeon 780M Manufacturer: LENOVO Product Name: 21K5000JGE System Version: ThinkPad P14s Gen 4 *** This bug has been marked as a duplicate of bug 452492 *** |
Let my laptop sleep overnight, after logging in to an existing plasma session, the external (DP) monitor is way too dark. The only workaround is to log-off and log on again. (fiddling with tools does not help) My setup: power-management: display & brightness: dim automatically: never (interesting side-effect: changing the screen-brightness slider only affects the laptop built-in screen, not the external monitor) My utility-script helps in setting the (for me) suitable config: ddcutil --display 1 setvcp 0x10 30 brightnessctl -d 'amdgpu_bl1' set 20% This does not help to regain intial brightness after wakeup, though `kscreen-doctor -o` confirms my setup Output: 1 eDP-1 Brightness control: supported, set to 20% Output: 2 DP-5 Brightness control: supported, set to 30% ...this remains true even after waking up from sleep, although the brightness of the DP-connected monitor is too dark These settings also correspond to the monitor-setup (hardware-keys). Asking my monitor-OSD/menu confirms that brightness is indeed 30% Fiddling with sudo tee /sys/class/backlight/amdgpu_bl1/brightness <<< 52 obviously only affects the built-in laptop-monitor, not the DP one For me, this looks like plasma is doing some other kind of darkening that i cannot control on the commandline? (any dbus commands that may help?) Im prette fedup with the neccessity to logoff/login only to restore screen-brightness. Yes, i can grab the plasmoid-brightness slider and pull the DP brightness all the way up to 80%, which then somehow matches my intended brightness. This only helps temporarily, because logging off/on later remembers this setting and the DP monitor is waaay to bright (so i need to fix this with the ddcutil script above) Something is not working correctly since plasma 6.2.0 (and still broken in 6.2.1 and 6.2.2) any help is appreciated