This is an old revision of the document!
In this page I am trying to collect all the issues that I solved from time to time, so that I remember how to fix those if needed.
The above picture belongs to this blog you might want to have a read: http://mschlander.wordpress.com/2011/01/23/kde-is-slow-for-dummies/
In systems running nvidia graphical cards, sometimes the video driver gets messed up with cached info. To fix this, run the following as normal user while logged in e.g. KDE:
nvidia-settings -a PixmapCache=0
Affected systems so far:
root@jarjar 11.4 ~> lspci | grep VGA 01:00.0 VGA compatible controller: nVidia Corporation G98 [GeForce 8400 GS] (rev a1)
You can spot this if you login to a terminal and run
top. You'll see processes that contain
akonadi in the name taking over 100% of all cores and memory.
To solve this problem, - Login on terminal or ssh to any machine with your user. - cd into your home folder, and run the following:
rm -rf .local/share/akonadi rm -rf .config/akonadi rm .kde4/share/config/akonadi*
- logout and try to login graphically. Akonadi should not freak out anymore.
Due to incompatibility trough versions on nfs4, if in the logs such an error appears:
Jun 12 13:57:55 balder automount: umount_autofs_indirect: ask umount returned busy /nfs
then it seemed more stable to switch to nfs3. This is done in '/etc/nfsmount.conf'. Please ask the administrator for such a fix.
Most of the issues are due to incorrect code sent to the copy machine.
If you experience problems printing from KDE or command line, follow these instructions:
For some reason KDE incorrectly writes the options for this printer. This is a KDE bug against Canon drivers.
copy-n, remove that line. Sample correct file is as follows:
lpotionsagain, it should be something like:
Dest copy-n UserID=None UserPassword=None Dest copy-t ColourModel=Colour UserID=None UserPassword=None Default printer
It is good to test if printing works by command line.
To pass the codes to the print queue (should not be needed after you do the KDE thing above, but in any case) issue the following:
lpr -o UserID=<code> -o UserPassword=<code> -Pcopy-t yourfile
It seems the driver for this printer is different than the previous one and KDE always tries to fallback to some weird default.