Disappearing reappearing row/s of pixels on R11 CB5-132T
Apologies if this is covered somewhere, I've done searches and closest I've found is flickering pixels, which this, strictly speaking, isn't.
Machine only a few weeks old. May have been doing this all along, but, at first, I thought it was my imagination.
About every 1-2 seconds, a row of pixels (or maybe 2 or 3) around a quarter of the way up the screen, disappears with everything below it shifting up the screen. 1-2 seconds later, it corrects itself. This was noticed by the resulting squished or partly missing text if text is populating that part of the screen at the time.
I've tried altering screen resolution in an attempt to hopefully reset something, did nothing. I've tried screen-dumping to see if it was saved in the screen dump image, it wasn't. Seeming to indicate a hardware error. I've tried it in Android apps, to see if it's isolated to Chrome, but it still does it. I've tried it in Linux programs, still does it.
While writing this, it stopped doing it. I'm not convinced it's solved, but intermittent. I've thought I've seen this machine doing it for a while now, but then seems to not do it. So makes sense to think, intermittent.
Any help, appreciated
