nvidia claims that this is is known issue with the window manager : "this is a duplicate of another Launchpad bug, and as I understand it, it’s a bug with Compiz and Mutter (the compositing managers of Unity and GNOME, respectively), see: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/269904. I believe it’s largely been fixed in Compiz, but that patch likely did not propagate to Ubuntu 12.04. I believe it’s in all Ubuntu versions >= 15.04, and probably is fixed in 14.04 as well (though not 14.10)."
so i'm afraid the only option is to upgrade to 15.04 (or maybe better 16.04) ... guess this ticket can be closed ? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-340 in Ubuntu. https://bugs.launchpad.net/bugs/1503310 Title: window content doesn't refresh, only if window is moved Status in compiz package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-340 package in Ubuntu: Confirmed Bug description: I suppose this is a bug with the nvidia driver, but I'm not sure. After the second-to-last routine software update (which I think updated the nvidia driver), changing window content is only refreshed if the window is moved. Ubuntu 12.04.5 LTS, kernel 3.2.0-91-generic, NVidia driver installed: 340.93-0ubuntu0.0.0.1, Thinkpad laptop with nvidia graphics card (see below), Window manager: Gnome Classic How to reproduce the bug: Log in under Gnome Classic. Open Gnome terminal. Execute some command (ls). Open new tab in terminal. Execute some other command (ps), just to have different tab contents. Switch back and forth between the tabs using the mouse. After some switches, neither the tab rider is activated nor the tab content is refreshed any longer. Only if you move the window, the tab rider gets activated and the tab content is refreshed. The same problem occurs in other applications (e.g. in thunderbird when selecting an email --- email list entry is not marked and email content is not shown, only if you move the window), so it is not application-specific. The bug disappears when using the window manager "Gnome Classic (no effects)" instead (which is "non-compositing" in contrast to "Gnome Classic"). The bug is also present in other window magagers ("Ubuntu"). Side remark: I tried but failed to switch back to an earlier version of the nvidia driver (from 340 to 331) using synaptic: When deinstalling 340 and installing 331 instead, synaptic complains that it depends on 340. So I can only guess that the bug is caused by the nvidia driver. Any help would be highly appreciated as the bug is really annoying. % nvidia-smi Tue Oct 6 16:13:30 2015 +------------------------------------------------------+ | NVIDIA-SMI 340.93 Driver Version: 340.93 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | |===============================+======================+======================| | 0 NVS 5400M Off | 0000:01:00.0 N/A | N/A | | N/A 44C P8 N/A / N/A | 194MiB / 1023MiB | N/A Default | +-------------------------------+----------------------+----------------------+ +-----------------------------------------------------------------------------+ | Compute processes: GPU Memory | | GPU PID Process name Usage | |=============================================================================| | 0 Not Supported | +-----------------------------------------------------------------------------+ ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: nvidia-340 340.93-0ubuntu0.0.0.1 ProcVersionSignature: Ubuntu 3.2.0-91.129-generic 3.2.71 Uname: Linux 3.2.0-91-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.0.1-0ubuntu17.11 Architecture: amd64 Date: Tue Oct 6 16:10:32 2015 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=C SHELL=/bin/tcsh SourcePackage: nvidia-graphics-drivers-340 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1503310/+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
