User switching problem

[adz_c]

When I try any of the switch user options the screen blanks and the computer appears to so something for a while, like saving session data and thats it.

I have to manually switch off the machine and reboot.

I don't know which log files I should check to see what might be happening, any ideas,

thanks

[netstrider]

Do you have another user created? Click the log-off button then log in via KDM/GDM (The splash page before you're logged in)

[adz_c]

Yeah I've got another user created which I can log on to from user selection screen but when I try to switch from either user I get the problem. When I click the log off button, lock screen and switch or any option that involves parallel sessions the same problem occurs.

Should I try again and then post /var/log/messages up here when I reboot (I know its gonna crash!)?

[netstrider]

I'd say do that, hopefully there's someone here who can help you with that.

[adz_c]

Hmmm, I think it has something to do with the fglrx ATI Drivers I have installed for 3D support but I haven't got a clue where to start to fix the problem.

I never tried user switching before this driver was installed but from /var/log/messages file it looks like the driver is causing the problem:

Jun 27 20:59:48 linux-59zy kernel: [fglrx:firegl_addmap] *ERROR* existing map 0x
ddd11600 (handle 0x00000000)
Jun 27 20:59:48 linux-59zy kernel: [fglrx] Maximum main memory to use for locked
 dma buffers: 431 MBytes.
Jun 27 20:59:48 linux-59zy kernel: [fglrx:firegl_addmap] *ERROR* existing map 0x
dd51bf40 (handle 0xe0ec0000)
Jun 27 20:59:48 linux-59zy kernel: [fglrx] total      GART = 67108864
Jun 27 20:59:48 linux-59zy kernel: [fglrx] free       GART = 45469696
Jun 27 20:59:48 linux-59zy kernel: [fglrx] max single GART = 45469696
Jun 27 20:59:48 linux-59zy kernel: [fglrx] total      LFB  = 134217728
Jun 27 20:59:48 linux-59zy kernel: [fglrx] free       LFB  = 105402368
Jun 27 20:59:48 linux-59zy kernel: [fglrx] max single LFB  = 105402368
Jun 27 20:59:48 linux-59zy kernel: [fglrx] total      Inv  = 0
Jun 27 20:59:48 linux-59zy kernel: [fglrx] free       Inv  = 0
Jun 27 20:59:48 linux-59zy kernel: [fglrx] max single Inv  = 0
Jun 27 20:59:48 linux-59zy kernel: [fglrx] total      TIM  = 0
Jun 27 20:59:48 linux-59zy kernel: usb 4-1.4: Initialization failed again. I wil
l retry on next open().
Jun 27 21:01:43 linux-59zy kdm: :1[4964]: Hung in XOpenDisplay(:1), aborting
Jun 27 21:01:43 linux-59zy kdm: :1[4964]: Cannot connect to :1, giving up
Jun 27 21:01:43 linux-59zy kdm[3761]: Display :1 cannot be opened

I guess this is where I pushed the power button to switch off computer.

Jun 28 12:58:09 linux-59zy syslog-ng[2836]: syslog-ng version 1.6.11 starting
Jun 28 12:58:11 linux-59zy rchal: CPU frequency scaling is not supported by your
 processor.
Jun 28 12:58:11 linux-59zy rchal: boot with 'CPUFREQ=no' in to avoid this warnin
g.
Jun 28 12:58:11 linux-59zy rchal: Cannot load cpufreq governors - No cpufreq dri
ver available
Jun 28 12:58:12 linux-59zy network: Starting the DHCP DBUS Daemon
Jun 28 12:58:12 linux-59zy network: Starting the NetworkManagerDispatcher
Jun 28 12:58:12 linux-59zy network: Starting the NetworkManager

Any ideas?

[gogalthorp]

Yes it does seem to be a driver problem but it is odd that it is trying to connect to display 1 normally the default display is 0

try this

as root

sax2 -r -m 0=vesa (0 is a digit, not a letter!)

this should reset the video to the default vesa driver

Is it possible that you have more then one video card installed ie one on the mother board? If so disable it from the BIOS