Ubuntu
gnome-desktop3 package

  1. Bug #791752
  2. Comment #13

Comment 13 for bug 791752

Revision history for this message
Keng-Yu Lin (lexical) wrote :

sent to Ubuntu Kernel ML for SRU review:

SRU Justification

Impact: Not uable to switch to the externel output-only (e.g. VGA or HDMI) mode.
It causes flickering on the externally attached monitor. This bug is common on
many SandyBridge-based laptops.

Fix: Upstream patch to disable PCH ports if needed when disabling a CRTC.

Test case: I tested on Lenovo Zhaoyang E47 and two Dell SandyBridge-based laptops.

BugLink: http://bugs.launchpad.net/bugs/791752

This backport patch is not in 2.6.38.y because of its end-of-life.
For the reference, the patch helps LP#745112 too, though not perfectly.