Thanks Julian. I can confirm that the bug is gone after installing 47.1 on oracular and rebooting.
The upstream commit that fixes this issue is https://gitlab.gnome.org/jadahl/gnome-settings-daemon/-/commit/e7d890ea53b994d80ae14f41a9db01eaad3621bc The upstream bug is https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues/818 I still have the bug that the brightness set before suspend is not restored on resume but the correct previous brightness is used when increasing or decreasing it with the keyboard. But I guess this is another bug and maybe not related to gnome-settings-daemon and more to systemd. Maybe you can reproduce it too: set a very low brightness, suspend, resume, brightness is high, increase brightness and brightness is reduced because the increase is relative to the very low value set before suspend. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/2081294 Title: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed Status in GNOME Settings Daemon: Unknown Status in gnome-settings-daemon package in Ubuntu: Fix Released Bug description: The key shortcuts as well as slider controls in GNOME for setting the brightness of the screen on a amdgpu_bl1 laptop stops working after a sleep/resume cycle. The GNOME logs are the following after pressing the brightness increase and decrease Fn keys on the keyboard: 12:46:37 (sd-bright): amdgpu_bl1: Failed to write brightness to device: Invalid argument 12:46:37 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed 12:46:36 (sd-bright): amdgpu_bl1: Failed to write brightness to device: Invalid argument 12:46:36 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed 12:46:36 (sd-bright): amdgpu_bl1: Failed to write brightness to device: Invalid argument 12:46:36 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed 12:46:35 (sd-bright): amdgpu_bl1: Failed to write brightness to device: Invalid argument 12:46:35 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed 12:46:34 (sd-bright): amdgpu_bl1: Failed to write brightness to device: Invalid argument 12:46:34 gsd-power: gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed Setting the backlight manually using the sysfs interface or the gsd- backlight-helper program still works: $ sudo strace /usr/libexec/gsd-backlight-helper /sys/class/backlight/amdgpu_bl1 15 ... openat(AT_FDCWD, "/sys/class/backlight/amdgpu_bl1/brightness", O_WRONLY) = 4 write(4, "15", 2) = 2 close(4) = 0 This is why I am filing this bug against gnome-settings-daemon and not the kernel. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/2081294/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
