You have been subscribed to a public bug: Binary package hint: compiz
I am noticing a problem when I have Sync to VBlank enabled for applications which involve OpenGL, particularly when in fullscreen. If there is consistent fast scrolling action at the very top of the screen, then screen tearing occurs there, a problem does not happen with Metacity, so I have concluded this is a problem with Compiz - I am using the non-free NVidia driver. It happens on Wine applications as well as on native Linux applications as well, such as Gens GS and Google Earth, but doesn't occur on Firefox or Totem. VSync to Blank is of course enabled on both the OpenGL section of NVidia settings and in CompizConfig Settings Manager. NVidia settings tell me that my LCD monitor is currently using a refresh rate of 75.02Hz. Asking Compiz to detect the refresh rate causes Compiz to jerk along. Setting it to 75Hz (my monitor's refresh rate) and above causes the problem with screen tearing at the top of the screen. I did note that this problem from memory did not occur on Gutsy and Hardy, but occurs on Intrepid and Jaunty, which I am currently using. What should happen: No screen tearing occurs. What happens instead: Screen tearing occurs at the top of the screen during fast paced action on fullscreen OpenGL applications. Output of lspci | grep -i vga: 01:00.0 VGA compatible controller: nVidia Corporation GeForce 8800 GT (rev a2) ProblemType: Bug Architecture: amd64 DistroRelease: Ubuntu 9.04 MachineType: System manufacturer System Product Name NonfreeKernelModules: nvidia Package: compiz 1:0.8.2-0ubuntu8.1 PackageArchitecture: all ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.30-020630rc3-generic root=UUID=3f23e463-0763-4534-b006-ec5880198328 ro vga=795 #GRUB_DISABLE_LINUX_UUID=true quiet quiet splash ProcEnviron: LANG=C SHELL=/bin/bash ProcVersionSignature: Error: [Errno 2] No such file or directory: '/proc/version_signature' SourcePackage: compiz ** Affects: ubuntu-release-notes Importance: Undecided Status: Invalid ** Affects: nvidia-graphics-drivers (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug compiz fullscreen nvidia -- Screen tearing at top of screen with VSync enabled on Compiz with fullscreen OpenGL programs https://bugs.edge.launchpad.net/bugs/370597 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp