** Bug watch added: gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues #726 https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues/726
** Also affects: gnome-settings-daemon via https://gitlab.gnome.org/GNOME/gnome-settings-daemon/-/issues/726 Importance: Unknown Status: Unknown ** Summary changed: - amdgpu_bl1: brightness control stops working after sleep/resume + gsd_power_backlight_abs_to_percentage: assertion 'max > min' failed -- 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: New 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
