Public bug reported:
Image: Ubuntu 11.04 i386/amd64
Kernel version: 2.6.38-8-generic
CPU: i5-2410M
GPU: UMA
Summary: Can not set dual display to "External only" mode on Intel Sandy bridge
systems
Steps to reproduce:
1) Use hotkey/Monitor preferences to toggle display
2) Set to "External only mode"
Expected result:
Should have External display set as primary display
Actual result:
Cannot set External display set as primary
two scenarios:
1) In unity 3D, setting external only will cause compiz crash
2) In unity 2D, setting external only will cause screen blinking
Additional info:
use "xrandr" to switch display does not have this problem
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/791752
Title:
Can not toggle Display to External only mode
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