Thread: 10.04 Intermittent crashing - screen goes black, unresponsive

hi everyone,

running ubuntu 10.04 and, ever since last update few days ago, have been experiencing periodic severe crashes. screen goes black and, when press menu button on monitor itself, says not receiving signal computer. doesn't respond mouse or keyboard , have hold power button down long time shut off.

has else had kind of problem? how can fix it?

here summary of system:

-computer-
processor : 4x intel(r) core(tm) i5 cpu 660 @ 3.33ghz
memory : 3987mb (471mb used)
operating system : ubuntu 10.04.3 lts
user name : prefer keep myself
date/time : wed 11 jan 2012 12:40:45 est
-display-
resolution : 1920x1080 pixels
opengl renderer : unknown
x11 vendor : x.org foundation
-multimedia-
audio adapter : hda-intel - hda intel
-input devices-
power button
power button
macintosh mouse button emulation
dell dell quietkey keyboard
usb optical mouse
dell wmi hotkeys
hda digital pcbeep
-printers (cups)-
-scsi disks-
ata wdc wd2500aajs-7
tsstcorp dvd+-rw ts-l633c



thanks


edit: tried system diagnostic tool hitting f12 during bootup. got halfway through checking full memory test , crashed again.

try making sure memory seated.

way, using apple mouse? wondering because in system information provided, says "macintosh mouse button emulation".

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