I reboot Ubuntu 5x a week

[Steve Riley]

On 2012-07-23 14:57:55 Bas Roufs wrote:
>
> In my case - Kubuntu 12.04- I have quite similar problems. At present I
> need to reset the system at least once a day. Often the system "freezes" to
> such an extend, that I can simply not move any more anything  - no cursor,
> no mouse click, nothing.  in such circumstances, I simply need to turn of
> and turn on the PC in order to get the system movable again.

Check out these Launchpad bugs...

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/993187
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/999910

Many people have experienced an ongoing issue that I'm still not sure has been 
completely solved. My ThinkPad X1 never freezes; my T520 freezes constantly. 
Their configurations are almost identical, with a couple exceptions:

* T520 has Optimus graphics, which I've disabled (using only Intel)
* T520 sports some USB devices: keyboard, mouse, headset

Despite trying various kernels and i915 module parameters, I still experiences 
freezes. I can reliably duplicate it by moving my mouse too rapidly or making 
a VoIP call with my USB headset.

...Steve