screen blacks out after pressing a key on keyboard (specially enter key)

Bug #801609 reported by Azary Marhabi
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
nvidia-graphics-drivers (Ubuntu)
New
Undecided
Unassigned

Bug Description

everything was fine after a fresh install of ubuntu natty, but after a while, maybe after i installed kubuntu-desktop, this problem rolled out:
when i type in an application, after pressing a key, screen blacks out, fan speeds up, and i dont know what happens to applications running (whether they crash or just continue working). i always regain the control by pressing power button and turning off the system. it just happens in several different application (chromium, kde proxy settings, hotot, terminal,...) and in unity, ubuntu classic and kde environment. since it happens randomly (i think so) there is no instructions to how to make the bug happen. also i don't know whether it is about nvidia driver that i have (it runs smoothly without any problems) or about x.org. in addition, sorry to say that i don't know what other information do i have to provide here, but here is output of "uname -a":
vaio598 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

Tags: kubuntu
bugbot (bugbot)
tags: added: kubuntu
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