Created attachment 587093 [details] Photo of my screens after trying to log in a second user Description of problem: When I try to switch user from KDE (without loging off the other), I can't login the second one. My screens split into squares of graphics. Version-Release number of selected component (if applicable): kdm-4.8.3-3.fc17.i686 kde-baseapps-4.8.3-1.fc17.i686 How reproducible: Always. Steps to Reproduce: 1. Log into KDE with "user1". 2. Klick to KDE menu -> "switch user". 3. Select "new session". 4. Loginto KDE with "user2". Actual results: After logging in the second user, my screens split into several squares. And there's no way to see the desktop or anything to click. Expected results: Second user should be logged in parallel and it should be possible to use the second account. Additional info: The only way to escape from the hanging broken second session is to [Ctrl] + [Alt] + [Backspace]. After that you'll be brought back to the login screen. If I switch back to the session of the first logged in user, I can continue working. But if I try to login with a different user again, it's the same.
What graphics driver/hardware? (This looks a lot like a driver bug.)
See here: http://www.smolts.org/client/show/pub_a4235c30-ebd1-41c8-92ed-f246320e33bf It's a: ZOTAC GeForce GT430 ZONE Edition (Nvidia GeForce FT430) on a GIGABYTE GA-Z68AP-D3 mainboard. Driver is the one that was shipped with F17.
So that's the Nouveau driver. I wonder if anybody can reproduce this with any other driver, otherwise we should probably reassign it to xorg-x11-drv-nouveau.
Just one more information: Until about two weeks ago, I used F16 (also with the Nouveau driver) and don't had this issue.
may be worth disabling desktop effects (for both users), and see if that helps any. (one easy way of accomplishing that is to login to kde (failsafe) session for each)
Yes, desktop effects were disabled by default in F16 and are now enabled by default in F17, so that may well be the difference. If that's not it, it might be a regression in the driver. The version of kde-workspace is the same in current F16 updates and F17.
Disabling desktop effekts on both users, didn't help. But if I log in with KDE failsave, I doesn't have this strange effect.
failsafe working is ample evidence to suspect driver issue, reassigning.
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