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Yesterday I have upgraded my ATI proprietary driver to 12.1. After some small issues it installed correctly, I have confirmation in Catalyst that the driver is at version 12.1.

Today I have noticed that after each log out, when I try to log back in, the screen freezes on my wallpaper. The mouse is working fine. CTRL-ALT-Backspace resets the Xserver, and prompts me back to the log in page. If I try a login, same thing happens. If I reboot from the login screen, I can log in into Unity 3D without any issue.

The issues happen only if I try to log-out and then back in. If I log in on Ubuntu 2D, it works fine.

So, any Ideas?

Edit: I think that's what's happening when I try to re-login. Taken from /var/log/syslog:

gnome-session[3017]: Gdk-WARNING: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.#012
 kernel: [ 1124.496537] [fglrx] IRQ 49 Disabled

Edit 2:

I have reverted to the drivers 11.12 and 11.10 (currently using it) and the behavior is the same. The problem is that I don't remember if I had this problem before or not. I would guess not, so, something is wrong here. It's not a show stopper for me, because I don't need to log-out / log-in, but still it's an error.

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Kind of off-subject, but is it worth the upgrade for any different features? –  Naftuli Tzvi Kay Jan 27 '12 at 22:17
    
I was told an old issue in Gnome Shell has been fixed with this driver. A screen flicker. –  bioShark Jan 27 '12 at 22:21
    
Oh, did you have problems running Mint on it too? I'm on a 8,3 MBP and the display manager flicker and restart now and again, which is why I was forced to go with Ubuntu/Unity. –  Naftuli Tzvi Kay Jan 27 '12 at 22:38
    
didn't try mint, sorry –  bioShark Jan 27 '12 at 22:44
1  
I upgraded recently and it totally borked Bluetooth on my system in addition to suspend/resume. I'm waiting for the 12.2 release. –  Naftuli Tzvi Kay Feb 2 '12 at 0:58

1 Answer 1

up vote 0 down vote accepted

Does this help? http://wiki.cchtml.com/index.php/Ubuntu_Oneiric_Installation_Guide#Hang_at_logout

Basically, something hangs and you need to force it to shut down when logging out. Might also apply at shutdown/hibernate. I had these issues before, but aren't experiencing them now.

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reading now...certainly in the right direction. Be back with info shortly. –  bioShark Jan 27 '12 at 22:24
    
unfortunately the fix from the link didn't work for me. Too bad, it was a good lead. But +1 for the help. –  bioShark Jan 27 '12 at 22:45
    
Try watching your computer as it logs out. Run sleep 10 ; gnome-session-quit --logout --no-prompt then hit CTRL+ALT+F5 to switch to another TTY. Log in, then tail -f /var/log/syslog. Why not? ;) –  Naftuli Tzvi Kay Jan 27 '12 at 22:47
    
how :) where could I log what it's doing? –  bioShark Jan 27 '12 at 22:48
    
Should I be worried that in /etc/X11 I don't have a xorg.conf file? I have a bunch of xorg.conf.fglrx-0/1/2... and xorg.conf.original-0/1 –  bioShark Jan 27 '12 at 22:53

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