Expo in multi-monitor (upside-down) shows corrupted

[Marcelo Fernandez]

I'm using a fresh-install of Ubuntu 11.10 in a Intel 965GM video board, with an external monitor connected, configured one above the other. The problem is, when I activate the expo plugin to change the current virtual desktop, the effect shows plainly wrong and corrupted, like in the screenshot attached. Trying to change the virtual desktop (despite the corruption) doesn't work.

The bug is *not* triggered with only one screen configured or with two screens in a left-right configuration.

[Stéphane Bidoul (Acsone) (sbi)]

I have the same problem with
- Ubuntu 11.10 Unity 64bit
- Dell E6400
- NVidia Quadro NVS 160M
- NVidia driver 285.05.09 (but the same problem was present with the default driver after 11.10 install)

I attach a screenshot.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[fedesog (fedesog)]

Same problem with Ubuntu 11.10 Unity 64bit, ATI 5750 and open source drivers.
On a left-right screen configuration left screen render the effect correctly while the right screen is corrupted (like in Stéphane screenshot) and doesn't accept mouse input while I would expect Expo to mirror the effect and accept input from either screen.
Changing "Multi Monitor Mode" setting in compiz Expo doesn't make any difference.

[Tarin Mahmood (mrlinux045)]

Ubuntu 11.10 64 bit here with ATI HD 6750 proprietary driver 11.12

Need a quick fix, Working with workspace becomes quiet impossible :(

[Marcelo Fernandez (fernandezm)]

The last bunch of updates of Unity (4.24) of the last days seems to fix the bug. Now I have expo working fine in a vertical dual-monitor setup, so i'd close this bug.

Regards

[Marcelo Fernandez (fernandezm)]

The last bunch of updates of Unity (4.24) in Oneiric seems to fix the bug.