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I've installed ubuntu 12.04 (the 64 bit version) and it crashes when opening a program. Sometimes this is with starting a virtual machine with virtualbox, sometimes with any other program. It doesn't always crash, but it does crash too often (daily). It has this problem since the first time I ran ubuntu on this machine and i didn't change any settings.

With crash I really mean crash; there are vertical stripes all over the screen and you can't change the num/caps lock lights on the keyboard, let alone go to another tty with alt+ctrl+f#, so i just have to turn off the power and reboot. The machine doesnt have this problem when booting windows 7 (not virtual machine but from grub). I haven't tried another linux version on this machine yet. Machine has an i5 4x3,33 Ghz cpu and 4Gb ram.

How can I solve this problem?

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Hint: you can use Alt+SysRq(PrintScreen)+REISUB (en.wikipedia.org/wiki/…) to correctly reboot a linux system. Does it work for you? – int_ua May 8 '12 at 19:56
Welcome to Ask Ubuntu! This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro May 9 '12 at 2:12
REISUB still makes the system reboot when crashed, but doesn't really solve the problem, thanks anyway – Daan May 9 '12 at 2:20
I'm also trying to report as a bug, but it will take some time seeing I never did so before and there isn't a specific program involved. Thanks for the hard work! – Daan May 9 '12 at 2:36

closed as off topic by Marco Ceppi♦ May 9 '12 at 4:53

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