F42 The brightness bar disappeared

[lemma1-1-1 (Xiao)]

I encountered several issues after updating to f42:

1. The brightness bar disappeared
   

   

2. The bar flashes when adjusting keyboard brightness.
   

   

3. In settings/Displays/Built-in display. when I turned on HDR and adjust the bar, the system froze, with the output of journalctl --follows:

Apr 16 22:55:11 xiaos-fedora gnome-shell[6339]: Errors from xkbcomp are not fatal to the X server
Apr 16 22:55:11 xiaos-fedora gnome-shell[2450]: Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
Apr 16 22:55:11 xiaos-fedora gnome-shell[2450]: Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
Apr 16 22:55:11 xiaos-fedora gnome-shell[2450]: Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
Apr 16 22:55:11 xiaos-fedora gnome-shell[2450]: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).

[litemotiv (Olivier)]

For the HDR slider issue there is an existing bug report that you can reply to:

Dragging the HDR Brightness Slider Crashes the system (#8282) · Issues · GNOME...

I haven’t looked if there are existing tickets for the others as well.

[ardeshir25 (Ardeshir P)]

Same as mine:

Fedora 42 brightness slider issue

Hello, On Fedora Workstation 42 I encounter this issue that brightness slider is missing but after I use physical keyboard keys to lower/higher brightness level then brightness slider will show up!! I also made a new user and checked with it but issue not related to user settings or even gnome extensions. [Screenshot From 2025-04-16 17-21-18] Before pressing physical keys: [photo_2025-04-16_17-35-04 (2)] After pressing physical keys: [photo_2025-04-16_17-35-04]

[litemotiv (Olivier)]

The upstream issue for the missing brightness bar is below. The issue has been fixed upstream but it will take a short while to come back to us:

Display backlight slider in Quick Settings won't show up until brightness...

[ardeshir25 (Ardeshir P)]

Thank you for the update