Description of problem: * On a Gateway NV5911h laptop, Fedora 21 detects an "unknown display" * When moving the mouse, the pointer leaves a trail * The display flickers constantly * The display behaves as if it is trying to show two desktops on the same screen at the same time * If the laptop is _NOT_ connected to an external monitor, the "unknown display" cannot be disabled * If the laptop _IS_ connected to an external monitor, the "unknown display" can be disabled and the issue is fixed Version-Release number of selected component (if applicable): 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 540M] (rev a1) How reproducible: Always Steps to Reproduce: 1. Turn on laptop and log in Result: The screen will garbled 2. Do not use external monitor; use only the laptop screen 3. Go to "All Settings" -> Displays -> "Unknown Display" -> "Turn Off Don't use this display" Result: Fedora cannot turn off the display Actual results: * Screen flickers, mouse leaves trails, windows leave traces, when resizing, Expected results: * Normal screen display Additional info: * Issue cropped up only in Fedora 21
Workaround found: 1. This laptop uses dual switchable Intel/nvidia graphics; I set the graphics to Intel only 2. I manually created a xorg.conf entry for "Unknown Monitor" Section "Monitor" Identifier "Unknown Display" Option "ignore" "true" ... Workaround found; Issue closed.