Installed kubuntu 12.04 from a LiveCD. Kubuntu auto installed my Nvidia GeForce GTX 550 Ti set to TwinView. PROBLEM: On opening System Settings-Desktop effects Cannot enable Desktop Effects: Message: "Required X extensions (XComposite and XDamage) are not available.". Ran utility "Additional Drivers": Gave option to update to NVIDIA accelerated drivers - see info below. Installed May 12 2012 NVIDIA accelerated graphics driver (post-release updates) (version current- updates) 3D-accelerated proprietary graphics driver for NVIDIA cards. Required if you want to run Unity. b]This driver is required to fully utilise the 3D potential of NVIDIA graphics cards, as well as provide 2D acceleration of newer cards. You need to install this driver if you wish to use the Unity desktop, enable desktop effects, or run software that requires 3D acceleration, such as some games.[/b] On reboot, ARandR crashed. Sent a bug report (seems it has a history of doing this)
xorg.conf: # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 295.33 (buildd@allspice) Fri Mar 30 15:25:24 UTC 2012 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "1" # Removed Option "Xinerama" "0" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Ancor Communications Inc ASUS MS238" HorizSync 30.0 - 85.0 VertRefresh 55.0 - 75.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor1" VendorName "Unknown" ModelName "LG Electronics L1751S" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" # HorizSync source: edid, VertRefresh source: edid EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTX 550 Ti" Option "NoLogo" "True" BusID "PCI:1:0:0" Screen 0 EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTX 550 Ti" Option "NoLogo" "True" BusID "PCI:1:0:0" Screen 1 EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "DFP-0" Option "metamodes" "DFP: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "CRT-1" Option "metamodes" "CRT: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Extensions" Option "Composite" "Disable" EndSection Tried to change the line "Option "Composite" "Disable" using bump@bumpykdeputer:/etc/X11$ sudo chmod a+rw xorg.conf bump@bumpykdeputer:/etc/X11$ sudo chmod 744 xorg.conf neither work, (most unusual as I've done it many times previously) Sure would appreciate any constructive suggestions for a newbie! ___________________________________________________ This message is from the kde-linux mailing list. Account management: https://mail.kde.org/mailman/listinfo/kde-linux. Archives: http://lists.kde.org/. More info: http://www.kde.org/faq.html.
