On my notebook Toshiba U205 S5034 - with Intel VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03), I fix the performance issue by a change into xorg.conf:
Section "Device"
Identifier "Configured Video Device"
# It turns off disabling pipa A by a driver after while.
# Its 100 % working workaround.
Option "ForceEnablePipeA" "true"
On my notebook Toshiba U205 S5034 - with Intel VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03), I fix the performance issue by a change into xorg.conf:
Section "Device"
Identifier "Configured Video Device"
# It turns off disabling pipa A by a driver after while.
# Its 100 % working workaround.
Option "ForceEnablePipeA" "true"
# restore COMPIZ performance
Option "AccelMethod" "UXA"
# Option "FramebufferCom pression" "off"
EndSection