Originally Posted by Malvineous
Yup, finally figured out how to upgrade to 180.51 without X11 crashing (leftover libraries from the old version) but the red full-frame flash and red checkerboard flash are still there :-(
I'm running dual monitors and it seems to flash more often when there's activity on the second monitor. Maybe it's related to the sync-to-vblank issue whereby one screen is incorrectly syncing to the vertical refresh of the other screen? (which results in tearing as if sync to vblank is switched off.)
I noticed that when KDE animations happen on the desktop, i get this problem, otherwise it is just gone.