I have also seen this problem. I have ubuntu 10.10 (not kubuntu). I upgraded from Lucid. Ubuntu and gnome work fine, but I decided to give kde a try and I installed kubuntu-desktop via synaptic. I got the same problem. I have a lenovo w500 laptop and lspci gives
Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) Same problem. I get the hangcheck error when effects are enabled. Gnome still works fine and I use full effect there. -- You received this bug notification because you are a member of Kubuntu Bugs, which is a direct subscriber. https://bugs.launchpad.net/bugs/644740 Title: [GM45] GPU Hang when enabling KDE desktop effects -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs