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I'm experiencing very frequent (and regular) GUI pauses on my system.

Every 30 seconds (pretty much exactly) the GUI will freeze for maybe .25 to .5 seconds. The mouse stops moving, keys stop echoing and a stopwatch timer briefly pauses.

I'm using the Intel Graphics driver available from: https://download.01.org/gfx/ubuntu/13.04/main

I've looked in a few places and tried a few things for a solution:

I've watched the system using top and System Monitor and there are no spikes (or even blips) of cpu usage when the pauses occur.

There are no obvious error messages in dmesg or syslog

There is loads of free RAM (8GB+) and no swap usage

If it helps it's a ZooStorm i5 laptop with a HD4000 GPU, 16GB Ram and an SSD.

Any help / suggestions would be very gratefully received.

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Ok, problem solved for me at least.

I ended up doing a clean install of 13.10 and using the open source MESA driver available from this ppa: https://launchpad.net/~oibaf/+archive/graphics-drivers/

13.10 works perfectly for me so far, compiz settings works great (wobbly windows FTW), and the mouse pad has even started working again.

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