I'm also experiencing this. Quite frustrating.
I'm on 15.04 and GNOME 3.16 with the gnome3-team and gnome3-staging PPA's. Only thing to add this message in terminal every time I hit the non functional brightness keys: (gnome-settings-daemon:13855): media-keys-plugin-WARNING **: No existing D-Bus connection trying to handle power keys -- 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/1427877 Title: Media, brightness and volume keys don't work with GNOME 3.15.90 Status in GNOME Shell: Incomplete Status in Ubuntu GNOME: New Status in gnome-settings-daemon package in Ubuntu: Confirmed Bug description: After upgrading Ubuntu 15.04 Vivid to use GNOME 3.15.90 (by using gnome3-team/gnome3, gnome3-team/gnome3-staging ppas) media, brightness and volume keys from my laptop keyboard stop to work after working some time in a session or after suspending the computer. If I restart my computer media keys work again. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: gnome-settings-daemon 3.15.90-0ubuntu1~vivid1 [origin: LP-PPA-gnome3-team-gnome3-staging] ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0 Uname: Linux 3.19.0-7-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.16.2-0ubuntu1 Architecture: amd64 CurrentDesktop: GNOME Date: Tue Mar 3 23:07:33 2015 InstallationDate: Installed on 2014-10-22 (132 days ago) InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140923) SourcePackage: gnome-settings-daemon UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1427877/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
