Random blue flash on monitor's...

[jagdtigger]

Hi all.

So i just got my new video card and it works fine on windows. Played several hours on it without problems. But on ubuntu i get random blue flashes:
https://youtu.be/u9c7UHUsmgE
(Its not just one of them, but it only does it on one of them at a time.)

 

Im running Ubuntu 18.04 and the GPU is a RX Vega 64. How could i find what causing this issue? (I assume its software since it is not present on windows.)

Thanks in advance for the help.

[ItsTheDuckAgain]

Tbh looks more like a monitor issue to me. Tried to swap screens?

[jagdtigger]

1 minute ago, ItsTheDuckAgain said:

Tbh looks more like a monitor issue to me. Tried to swap screens?

I didnt think about it since all of them do it, and the issue does not occur on windows during a 3+ hour gaming session..... Besides i can only change two of them, the middle one is running on DP.

[ItsTheDuckAgain]

4 minutes ago, jagdtigger said:

I didnt think about it since all of them do it, and the issue does not occur on windows during a 3+ hour gaming session..... Besides i can only change two of them, the middle one is running on DP.

Oh sry didn't see that. thought only the middle one does it. Ignore me then :-)

[jagdtigger]

2 minutes ago, ItsTheDuckAgain said:

Oh sry didn't see that. thought only the middle one does it. Ignore me then :-)

Maybe i wasnt clear enough in the OP or IDK...

[jagdtigger]

Found it, it seems Redshift was causing it, if i disable it the flashing does not occur.