Mar 19, 2014 - 10:16am
I have Dell Precision M4800 with FireGL HD 8870M and Intel Haswell on Fedora 20.
Windows 7 works fine. On Fedora external monitor is always corrupted in addition to getting EDID checksum errors that I can overcome with xrandr --off/--auto.
Below are pictures of the monitor corruption (screenshot comes out to be fine). There are basically screen erasure issues: mouse cursor leaves traces, window resizing leaves pieces of window lying around, weird triangles coming and going all over.
I'm using opensource radeon with latest 1.0.4 intel display drivers.
I am running Fedora 20 on an HP ZBook 14 with a Radeon HD 8730M. The laptop is attached to an HP docking station. An external monitor connected the the DisplaPort has the exact same issue with the open source readeon driver that ships with Fedora. I tried the AMD fglrx driver, but was worthless for the external DP ports. I've also tried different monitors, cables, and even LinuxMint, but still no luck.
Have you made any progress ?