Screen goes green-ish or red-ish and flickers in ubuntu 14

Asked by Patricia on 2015-01-05

I've been using ubuntu 10 for a while until I switched to ubuntu 14 (I formatted the computer instead or upgrading from 10 to 14). As soon as I started using the default Unity UI in ubuntu 14, my screen began to turn green-ish and sometimes red-ish (but mostly green). I thought the monitor was faulty so I changed it, but I noticed the same problem. So I thought the connections might be having problems and changed the wires that connect the monitor to the pc. Same thing happened. So I went back to the old monitor with the new wires. Same issue. Went back to my initial configuration of monitor+wire and I still experience the same.
It seems to happen at random times: the screen just gets a green tone (as if colors were really unbalanced) and flickers for a while back and forth (from regular colors to greenish). Then for a while it's normal and then suddenly it comes back.
Since I tried the hardware solutions I could think of, is there any software-related thing I could try?
Thanks.

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu xorg Edit question
Assignee:
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Last query:
2015-01-05
Last reply:
2015-01-05

Check the video card is seated correctly.

You may want to check your RAM using Memtest from Grub as well.

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