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I have installed Ubuntu 12.04 on my new Dell Vostro 3550 and noticed persistent windows and cursor blinking. When going to console (ctrl+alt+f1) and using 'cat' I see persistent generation of this symbols: '^@'.

Please help!

UPD: I get rid of blinking by disabling "Video Bus" (id=8) device under Virtual core keyboard section from

xinput list


sudo xinput set-prop 8 "Device Enabled" 0

But after return from console (ctrl+alt+f1 then ctrl+alt+f7) interface is blinking again.

I wonder what this device is? And how I can disable it forever or maybe some drivers needed?

share|improve this question
That does not happen using the livecd I presume? – Bruno Pereira Sep 4 '12 at 12:42
This happens on livecd to. – Zuker Sep 4 '12 at 12:45

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