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Screen scrambles when logon screen shows [duplicate]
Possible Duplicate:
Strange Glitched Screen on Startup
I run dual boot win7/Ubuntu 12.04 and my annoying problem is that every time the logon screen shows, my screen gets scrambled. This is ...
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screen flickers after waking from blank screen
Every time I lock my screen and then unlock it again I get a really annoying screen flicker that stays until the next reboot.
It's not like a graphic glitch it's like the screen is refreshing at a ...
