Alad [1] filed a deletion request for gnome-settings-daemon-backlight- toshiba [2]: Package no longer required, see comments: "I have a Toshiba R830 and the problem has been fixed in the kernel module. The toshiba backlight device is no longer available so, for me, this package is no longer required." [1] https://aur.archlinux.org/account/Alad/ [2] https://aur.archlinux.org/pkgbase/gnome-settings-daemon-backlight-toshiba/