Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-control-center (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1058388
Title:
Ubuntu 12.10 Beta 2 multi-monitor support is broken beyond beleif
Status in “gnome-control-center” package in Ubuntu:
Confirmed
Bug description:
I just installed 12.10 beta 2, and updated all the packages. I was
hoping that multi-monitor support will get better, but I was in for a
big surprise: not that it isn't better, it's worse than it was in
12.04.
I have a i5 machine with 8GB ram, AMD 7950 graphic card, an Dell 24"
monitor and Acer projector. After the installation on HD (I used open
source driver), my system was configured in mirror mode, with 1024x768
resolution (Screen01; 1400x1050 was just chosen, not applied, it was
changed to 1024x768 before turning off mirror mode). In 12.04, because
I was unable to mirror monitor's 1920x1200 to projector's 1024x768, I
was keeping them in side-by-side configuration. So, my first impulse
was to turn off the mirror mode (Screen02, screenshot of Expo view on
Screen03). After clicking on Apply, I got all my windows dissapeared
(Screen04, photograph). As it turned out, all my windows were moved to
second screen (projector, which was just plugged in, but not turned
on), which can be seen on screenshot Screen05. Expo view also gave me
nothing (Screen06, photograph), but screenshot of Expo view shows that
there are windows (Screen07) - why is this different???
On my next attempt, I turned off Mirror mode AND turned off the
projector at the same time, and was finally able to see all windows on
the monitor. After that, I changed monitor's resolution to 1920x1200
and I tried to turn mirror mode on, and got completly screwed-up
desktop (Screen07). I tried to expand shrinked windows and got
something like Screen08. Because it was impossible to recover desktop,
I logged out and logged back in, and launcher was gone (Screen10).
After several failed attempts to bring it back, I logged out, deleted
all settings from home folder (.config, .compiz, .gconf), logged back
in and launcher was back.
Additionally, on Display settings, if I click on projector icon
(Acer), and then on monitor icon (Dell), I cannot click again on
Projector - it just isn't active anymore. By accident, I discovered
that area ABOVE the projector icon was active (Screen11, there is no
cursor on screenshot, but you can see the tooltip just above from
where it is).
My next test was to see if windows are on their places when projector
display is turned on and off. Screen12 shows initial window
configuration, with projector turned off. After turning projector on
(Display settings), the windows were moved, just like in 12.04
(Screen13). Additionally, terminal and text editor were maximized
(they weren't before). I then aranged windows to where they should be
(Screen14), turned projector off, and they were moved again
(Screen15). Notice that terminal and text editor windows are split
between two workspaces, but one half of text editor window isn't
visible. After clicking on it, the other half became visible
(Screen16).
Additionally, whenever I turn projector on or off, the mouse is moved
on some seemingly random location.
There is more, but this is what I experienced in the first half hour
of trying 12.10 beta 2. All pictures are in attached archive.
If someone needs me to do additional tests, I'll gladly do, because
12.10 in this state just isn't usable for me.
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