Public bug reported:
Original bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/745112
Author: Roland Dreier (roland.dreier)
Description:
"Binary package hint: unity
(I'm not sure where in the stack this problem really is, so I'm guessing
and picking on unity)
I have a Lenovo T410s laptop with Intel graphics and I use it with a
dock with two 1920x1200 monitors connected. I'm running up-to-date
Natty. If I boot the laptop with it already docked, everything works
perfectly: the two external monitors are used and I get a nice unity
desktop spanning my 3840x1200 space.
However, if I boot with the laptop undocked, log in, and then dock the
laptop, it breaks pretty badly. Only one monitor is lit up, and I just
get a black screen with a mouse pointer there -- no desktop background,
windows, toolbars, or anything. Once it's in this state, it doesn't seem
possible to recover -- if I undock the laptop again, the internal screen
just stays black with a pointer.
When the laptop is in a working state, undocking it sort of works... the
desktop switches to the laptop screen, but then redocking it acts just
like docking as described above."
Thank you!
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Invalid
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Invalid
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https://bugs.launchpad.net/bugs/917697
Title:
(Upstream) Desktop not working with External Monitors
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