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gauthma

Member

Registered: 2010-02-16

Posts: 222

Website

Laptop: native monitor vs. external monitor

These days I usually switch on the laptop (an Asus Zenbook) when it is already plugged in to an external monitor. This causes the external monitor to be the *only* one to display anything -- which is fine most of the time, because that's precisely what I want. The problem is that, on the very few occasions when I need to revert back to the laptop's native monitor, I simply cannot make it display anything whatsoever -- unless I reboot the machine with the external monitor unplugged.

I've tried all the xrandr variations I could think (and google) of, and nada. Also, if I try doing it on KDE's System Settings, the resolution of the external monitor will change, but the native monitor will still be blank; and if I click "Identify Outputs", the identifiers for both monitors will be shown on the external one!! (albeit on slightly different locations). Here's the output of xrandr (external mon. plugged in, native disabled):

$ xrandr 
Screen 0: minimum 320 x 200, current 1440 x 900, maximum 8192 x 8192
eDP1 connected (normal left inverted right x axis y axis)
   1920x1080     60.00 +  40.00  
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
VGA1 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 428mm x 255mm
   1440x900      59.89*+  74.98  
   1280x1024     75.02    60.02  
   1280x960      60.00  
   1152x864      75.00  
   1024x768      75.08    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    60.00  
   720x400       70.08  
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)

Help?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,659

Re: Laptop: native monitor vs. external monitor

Perhaps you should share some of the xrandr incantations you have tried and post the full output of those commands.

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gauthma

Member

Registered: 2010-02-16

Posts: 222

Website

Re: Laptop: native monitor vs. external monitor

Perhaps you should share some of the xrandr incantations you have tried and post the full output of those commands.

Perhaps I should have in my original question, but the point is now moot, for after more googling, I found these two bugs that I had missed yesterday:

https://bugzilla.redhat.com/show_bug.cgi?id=844985
https://bugs.freedesktop.org/show_bug.cgi?id=48652

Short version: it's an upstream problem...