Unable to switch X sessions between different VT. System freeze and need power down to restart

[Roland Scheidegger]

LinuxBox at infinito.it wrote:
> Hi,
> it's my first post into a mail list so I apologise if I'm doing/writing 
> something wrong.
> Problem: Any attempt to switch between two different X sessions freezes the 
> whole system. Power off/on is needed to recover.
> I would use the switch user option in my Mandriva 2006 box but any attemp to 
> use this function lock the system.
> I also used > alt-ctrl-fx > xinit -- :1    to start a new X session getting 
> the same result.
> The new X session is started and I can use it, but attempting to came back to 
> the original X sesstion (usually Vt 7 by alt-ctrl-f7) freezes the whole box.
> 
> Here is my system:
> 
> AMD Athlon 3500+
> Mandriva Powerpack 2006.0
> MB Asus A8N5x
> Graphic Card: Asus Ati X700 PRO PCI-E
> 
> I've just upgraded to the last ATI drivers 
> ati-xorg-8.22.5-0.1.20060plf
> dkms-ati-8.22.5-0.1.20060plf
> but the bug is still there.
This looks like a bug with ATI's closed-source driver rather than a 
problem with xorg, so this list can't help.
There's an (unofficial, though ATI is rumoured to watch it) bugzilla for 
ATI's linux driver, http://ati.cchtml.com/ and in fact your bug seems to 
be there already, http://ati.cchtml.com/show_bug.cgi?id=296, you can 
also try the linux section of the discussion forum of www.rage3d.com, or 
try some official ATI channels.

Roland