I am currently running into this same issue on a fresh install of Kubuntu 14.04.
The driver manager lets me choose between three video drivers (fglrx, fglrx-updates, and xserver-xorg-video-ati). If I can pick one of them and click "OK", the window immediately closes and nothing changes. If I click "Apply" instead, some message on a red background (presumably an error message) flashes very briefly, without letting me enough time to read it, then the manager goes back to the "collecting information" phase. I tried running "/usr/bin/kcmshell4 kcm_driver_manager" in a terminal to get more useful output, and this is all I got: QDBusArgument& operator<<(QDBusArgument&, const DeviceList&) is noop const QDBusArgument& operator>>(const QDBusArgument&, DeviceList&) Dev( id: "/sys/devices/pci0000:00/0000:00:03.0/0000:01:00.0" modalias: "pci:v00001002d00006738sv0000174Bsd0000174Bbc03sc00i00" model: "Barts XT [Radeon HD 6870]" vendor: "Advanced Micro Devices, Inc. [AMD/ATI]" driver("fglrx-updates" recommended[false] free[false] fromDistro[true] builtin[false] manualInstall[false] fuzzyActive[false] package[0x0]) driver("fglrx" recommended[false] free[false] fromDistro[true] builtin[false] manualInstall[false] fuzzyActive[false] package[0x0]) driver("xserver-xorg-video-ati" recommended[true] free[true] fromDistro[true] builtin[true] manualInstall[false] fuzzyActive[false] package[0x0]) ) found error while replying QDBusError("org.freedesktop.DBus.Error.InvalidArgs", "") found error while replying QDBusError("org.freedesktop.DBus.Error.AccessDenied", "") auth error reply! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1445970 Title: In the driver manager of Kubuntu: It looks like pressing "OK" was the same as pressing "Cancel". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kubuntu-driver-manager/+bug/1445970/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs