Screen freezes randomly for short periods of time [Solved]

I'm not sure when this started to happen, but my screen will freeze (not refresh) randomly for short periods of time (about 5 seconds). The mouse cursor still active and anything I click on will eventually catch up once the screen refreshes.
I'm assuming this is an Xorg issue, or perhaps and Nvidia issue, but here are some details:
KDE 4.4
Kernel 2.6.32-ARCH 64
Nvidia 195.36.15
And here is my Xorg.conf:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder58) Tue Oct 20 21:25:04 PDT 2009
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
InputDevice "SynapticsTouchpad" "SendCoreEvents"
EndSection
Section "Files"
EndSection
Section "Module"
Load "glx"
Load "synaptics"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "SynapticsTouchpad"
Driver "synaptics"
Option "AlwaysCore" "true"
Option "/dev/input/mice"
Option "/dev/psaux"
Option "VerticalEdgeScroll" "True"
Option "HorizontalEdgeScroll" "True"
Option "CornerCoasting" "true"
Option "TapButton1" "1"
Option "TapButton2" "2"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "NoLogo" "True"
Option "RenderAccel" "True"
Option "TripleBuffer" "True"
Option "BackingStore" "True"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Needless to say this is very annoying/embarrassing when I try and show people stuff, so any help would be greatly appreciated!
Last edited by fini_fly (2010-05-21 13:47:20)

What you can try is to add:
option "UseEvents" "false"
(also try "true" and see if it works for you)
to your xorg.conf under the device section. Play with both false and true settings, UseEvents is somewhat related to the short freezes and the nvidia guys mentioned they disabled this feature a few driver releases ago (as far as i know from researching their forums). Otherwise we probably have to wait for a new driver series.
Another tweak would be to check if you use MSI for your nvidia card:
cat /proc/interrupts:
22: 0 4 1106 297835 IO-APIC-fasteoi ohci_hcd:usb3
23: 1 17 3275 890447 IO-APIC-fasteoi hda_intel
27: 2 13 1035 342106 PCI-MSI-edge ahci
28: 5 337 26356 7568321 PCI-MSI-edge eth0
29: 6 92 10219 1998835 PCI-MSI-edge nvidia
NMI: 0 0 0 0 Non-maskable interrupts
add this to /etc/modprobe.d/options.conf: (does not work with all nvidia cards but i can confirm it works with the 200 series)
options nvidia NVreg_EnableMSI=1
While using MSI slightly improves performance some people reported it also shortens the occasional freezes.
As said in the post above this is only for nvidia and it may or may not help for some gpu's.
Best regards

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