Stability problems with KDE4.2.2 on NVidia 8400M GS
 

Hi,

Currently I am running KDE4.2.2 on Kubuntu 9.04 and have ran into various stability problems. One that is most severe is, when I close certain applications (like Emacs,Firefox), entire desktop freezes for a while. I have filed a bug report with KDE folks here:

https://bugs.kde.org/show_bug.cgi?id=185671

Now they claim its a problem of driver. So while digging through this forum, I found this:

http://www.nvnews.net/vbulletin/showthread.php?t=58498

Which suggests for dual core machines to boot with:

Now according to this , running with idle=poll will cause overheating and maximize power usage (and not recommended), where as maxcpus=1 will set the maximum cpu limit to 1. Has anything changed yet or why does nvidia recommends to run with idle=poll when apparently kernel folks don't ? Or is it just for testing whether it makes problem go away.

For the record, I have booted with "pci=nommconf", but haven't enabled other two kernel parameters and yet I am still having stability problems. I am attaching the bug report with the post.

Re: Stability problems with KDE4.2.2 on NVidia 8400M GS
 

I can reproduce the problem with or without compositioning, but its just that compositioning makes it more severe.