Good news to all Kubuntu and Fedora users. The cause for the video garbage appearing whenever a new window is opened has been discovered. A custom patch to xorg is causing the trouble. Now we can only hope that the distributions will provide updates for xorg without this patch. If you don’t want to wait that long and you are a Kubuntu user just add the following ppa to your sources.list and upgrade your system:
deb http://ppa.launchpad.net/adamspain/ubuntu intrepid main
The interesting thing is that NVIDIA knew about this patch for at least one month and started to work around it in their drivers. That’s great as it shows that they care about KDE and want to improve the KDE experience. The bad is that they did not communicate that a custom patch to xorg is responsible for the problem. Neither in KDE’s nor in Ubuntu’s bug report there is a comment from NVIDIA. And that’s sad. With a little bit more communication the problem would have been solved much earlier.
Does anyone know if this patch fixes the video garbage for Intel graphics cards?
Yes removing the patch fixes it for Intel as well: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/254468/comments/26
Yessssssssssss Thanks
After speaking with fedora’s X maintainer, neither he (or I) am convinced that removing the aforementioned patch is the best way forward. It’s there for good reason, else compositing performance suffers significantly.
I’ll comment further on kde’s bugzilla.
@Red Dieter: thanks for the Info. But I cannot notice any difference. CPU usage does not increase, everything seems fine (using the CPU plasmoid).
It’s always difficult to say what’s worse. I’d say the video garbage is worse than a little bit more CPU usage.
Well I only had this problem with GTK programs anyways. Such as firefox and thunderbird. But seems it’s fixed in the 180.16 beta drivers from Nvidia.
Great! Thanks for the notification, works like a charm for me.
[...] A quanto leggo, la causa del malfunzionamento risiedeva in Xorg e dovrebbe essere eliminata grazie ad una patch già disponibile. Nell’attesa che i distributori la inseriscano nei loro pacchetti, chi ha Ubuntu può installare i pochi MB di aggiornamento a xorg-common e xorg-core, con questi comandi: [...]
Yes!!
Thanks man…….. those glitches where really very very annoying..
Now the fps bug, i dont get more the 100 fps when running glxgears in Kubuntu.
I am holding off upgrading to the KDE 4 series until 4.2 (running hardy for now) hope this makes it into the official kubuntu upgrades before then.
Thank you so much for the heads up. This fix is working well for me with an Intel chipset.
Brilliant detective work! Thank you!
Wonderfull! Thank you very much, you’re great!
@Adolf
The fps bug isn’t a really bug. Search please at launchpad for this and jaunty. In short:
It’s cause by a misconfiguration of access rights of /dev/dri/card[0-9]
Setting the rights to 666 will solve this temporary. For enduring solution luck at launchpad
[...] wie ich in den Kommentaren lesen konnte. Mann muss lediglich eine Quelle die sich am bessten auf Martins Blog befindet einfügen und ein Update durchführen (Näheres hierzu in den Kommentaren). Voila, schon [...]