Public bug reported:
Binary package hint: gdm
On Feisty, when switching users on a system running an ATI (Radeon
9700pro) using the fglrx driver, the system goes into a blank screen and
you can never return to a console.
CTRL+F# does not work, so you cannot go to a text console either. The
only thing that works is to ssh into the box from another one and
restart the system. Killing gdm and X would freeze the system.
I tested on an Intel-based GPU system and this problem did not happen.
Its possible that this problem affects Nvidia users as well, though I
have no way to confirm this. Some in the #ubuntu-devel IRC talked about
this issue for Nvidia cards (pitti on IRC #ubuntu-devel).
** Affects: gdm (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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Switching users (switch user) blank screen on fglrx (ATI driver)
https://launchpad.net/bugs/98684
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