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On 2012-12-22T16:02:24+00:00 shankao wrote:

I have configured the laptop screen in the left and a external monitor
in the right. On the left most part of the monitor, I can see 1 column
of pixels that belong to the content that is in the right most part of
the laptop.

Strangely, it does not show up when I try to do a screenshot, but is
quite evident when watching a fullscreen movie in the monitor, for
example.

Original bug report at Ubuntu's launchpad:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/1085338

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/1085338/comments/8

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On 2012-12-22T16:11:35+00:00 agd5f wrote:

This is a limitation due to the way xrandr works.  It uses a single
surface for all enabled displays rather than one surface per display.
The display hardware has alignment requirements that can cause this
situation since we align the start address down.  The per-crtc pixmaps
work should fix the issue when it finally goes into the xserver.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/1085338/comments/9

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On 2012-12-22T16:29:34+00:00 shankao wrote:

Ok thanks. Any idea when that's planned for? :)

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/1085338/comments/11


** Changed in: xserver-xorg-driver-ati
       Status: Unknown => Won't Fix

** Changed in: xserver-xorg-driver-ati
   Importance: Unknown => Low

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https://bugs.launchpad.net/bugs/1085338

Title:
  One pixel column that belongs in one monitor shows up in the other
  instead

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