I just installed Ubuntu 12.04 LTS on my desktop PC. Then I installed KDE because I prefer KDE to the default Desktop.
But then my mouse started to behave strangely:
When I initially log into my account after system startup, I can onky use some of the UI controls (for instance, I can click the K-Menu button but I cannot use any of the elements in the K-Menu, rendering it completely useless. Pretty much all I can do is pressing [Ctrl]+[Alt]+[Del] and wait the 30 seconds to log out since the dialog's controls are also unclickable.
When I log back in again (without rebooting), everything is back to normal. All UI controls work as expected.
Mouse is a Cyborg R.A.T.5 Mouse. I already set it's button mapping in the xorg.conf file:
It obviously has something to do with this particular mouse. When I attach any other mouse, everything works normally without logging-out and back in again.
Identifier "Mouse Remap"
MatchProduct "Saitec Cyborg R.A.T.5 Mouse"
Option "ButtonMapping" "1 2 3 4 5 6 7 8 9 10 11 12 0 0 0"
This problem also appeared on a previous KUbuntu installation (Was the reason to abandon it).
Thanks in advance for any advice
PS: Sry for my english, it's not my native language.