Bug 15115

Summary: xrandr monitor hotplug makes all windows jump there
Product: xorg Reporter: Marius Gedminas <marius>
Component: App/compizAssignee: David Reveman <reveman>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: nickolai
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Marius Gedminas 2008-03-18 16:03:14 UTC 
This is best illustrated by an example:

1. Imagine a laptop with intel video (for the sake of xrandr output names).
2. Start in single-head mode.  Open some windows.
3. Plug in an external monitor.
4. Enable it with xrandr --output VGA --above LVDS

Expected behavior:

All existing windows stay in place.  New empty desktop space appears on the external monitor.

Actual behavior (compiz 0.6.2+git20071119-0ubuntu1~gutsy1):

Your laptop panel becomes empty.  All existing windows move to the external screen.  This is quite disconcerting.

This also happens if you do xrandr --output VGA --left-of LVDS in step 4.  You get the expected behavior only if you use --right-of or --below.

Aside: --left-of and --right-of are often not a practical option due to the 2048x2048 texture size limit shared by many drivers, unless both your screens happen to be 1024x768.  And --below makes no little sense on a laptop.
Comment 1 Jon Piesing 2008-03-21 13:41:24 UTC 
This looks like it's related to 13317 and 12594.

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