For some reason likely unrelated to Cosmic, my laptop can't control the keyboard backlight with dbus, likely something to do with UPower. A dbus call to get the brightness fails:
Error org.freedesktop.DBus.Error.UnknownMethod: Object does not exist at path “/org/freedesktop/UPower/KbdBacklight”
From my limited understanding of the journald logs, it looks like on launch of Cosmic, it reaches usr/lib/xdg-desktop-portal-cosmic, tries to interact with the keyboard backlight, but can't, and doesn't ignore it and proceed. Instead it looks like it gets stuck in some retry loop before quitting.
Running Arch, fully updated, on a Starlabs Starlite MkIV.
I have the exact same issue on my HP spectre x360.
start-cosmic is stuck in a loop where it tries to start, fails, and retries, until I have to kill the laptop holding the powerbutton for 5 seconds.
For some reason likely unrelated to Cosmic, my laptop can't control the keyboard backlight with dbus, likely something to do with UPower. A dbus call to get the brightness fails:
Error org.freedesktop.DBus.Error.UnknownMethod: Object does not exist at path “/org/freedesktop/UPower/KbdBacklight”
From my limited understanding of the journald logs, it looks like on launch of Cosmic, it reaches usr/lib/xdg-desktop-portal-cosmic, tries to interact with the keyboard backlight, but can't, and doesn't ignore it and proceed. Instead it looks like it gets stuck in some retry loop before quitting.
Running Arch, fully updated, on a Starlabs Starlite MkIV.