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I have this problem on my workstation. The computer would effectively freeze for 2-5 seconds for no apparent reason, then continue as normal. While frozen the mouse would still be movable, but only on one of screens in my multi-screen setup. What can be the likely cause.

System:

  • CPU: i7-920
  • Memory: 12G of Patriot DDR3, 6 modules
  • OS: SLED 11, Suse Linux Enterprise Desktop, using Gnome
  • Main board: Asus P6T
  • Video: two Nvidia 9500GT connected to three displays

I am using memory at recommended settings of 8-8-8-1333. It has an XMP profile. Th CPU is a bit overclocked to 3.3 GHz, but my cooling more than allows for it. I ran the computer with all overclocks off and lower memory speed but the issue was still there.

Any ideas? Where should I start looking?

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2  
Check your hard drive. – user3463 Dec 10 '10 at 19:34
2  
Also make sure the drivers are okay. – Shinrai Dec 10 '10 at 19:42
1  
As Shinrai mentioned, you want to look at your multi monitor setup. It's very telling that the mouse only works on 1 screen. Take a look at the drivers you have for each monitor and look for updates. If that doesn't fix it look at your configuration, try a different type such as mirror or that one where both screens are the same (I think it's called twin). – Daisetsu Dec 10 '10 at 23:46

Any chance your workstation is mounting /home over nfs? That can cause the exact symptoms you describe if your network connectivity gets interrupted or the nfs server goes down briefly.

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