I am using Ubuntu 12.04LTS on my Toshiba satellite L510 and I have only Ubuntu installed. The system becomes slow and jerky by itself after every 10minutes or so and the remains like that for less than one minute

closed as too broad by slm, Anthon, Renan, jasonwryan, user26112 Oct 19 '13 at 19:41

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  • I added the tag performance. I'm not sure why you tagged the question with syslog? Does the log files say anything special after such a lag? Have a look at /var/log/{dmesg,kern.log,syslog,messages} etc. Also, it may help to open "system monitor" to see what caused the lag. – phunehehe Oct 19 '13 at 13:30
  • check that also but everything normal there – user49418 Oct 19 '13 at 13:43
  • Sounds like a cronjob if it is recurrent. What does sudo crontab -l say? – Ulrich Schwarz Oct 19 '13 at 13:43
  • it says Http://freetexthost.com/jrbzz5bvdm open the URL to see – user49418 Oct 19 '13 at 13:50
  • That only lists root's cron though, try this stackoverflow.com/a/137173/168034 – phunehehe Oct 19 '13 at 14:43

I had issues with (temporary) hanging/freezes/sluggishness on a (somewhat older) laptop that was (somewhat) resolved by using GNOME Classic (aka GNOME Fallback, & still is gnome3, btw); but my eventual solution was to use gnome2/mate (eventually replacing Ubuntu altogether with the Linux "mint" distro). Perhaps too much cruft from too many upgrades, or maybe the old laptop just couldn't handle the demands of unity/gnome3; I'm sure the situation will improve, but until then, cheers, "mate".