https://bugs.freedesktop.org/show_bug.cgi?id=109239
--- Comment #9 from Raman Gupta rocketraman@gmail.com --- (In reply to Harry Wentland from comment #7)
If you didn't say you tried swapping monitors and cables I'd say it was a cable issue.
Are those high refresh rate displays (120Hz+)? If so you might want to give what's suggested in this comment a try: https://bugs.freedesktop.org/show_bug.cgi?id=102646#c41 It would help us diagnose the issue.
While I believe this was directed at Samuel Pitoiset (I don't have high refresh rate displays), I tried it anyway. Same problem occurs.