CentOS - Aug 2010 - dual heads, Radeon

Dell OptiPlex 980, Radeon HD 4550 xorg figures it should use the r500 driver.

I start with no /etc/X11/xorg.conf. It comes up, mirroring. I use the
gnome applet - the same thing, btw, with system-config-display - tell it
to use dual head, and spanning desktops. Exit X.

Restart, and the second monitor goes into powersave mode. Try to exit X,
either via logout, or <ctrl><alt><bkspace>, and it goes, and
comes back
with a bluish screen... and that's all she wrote. It's hung so hard I
can't log in via ssh, and have to power cycle it.

Any clues?

        mark

m.roth at 5-cent.us writes:
> Dell OptiPlex 980, Radeon HD 4550 xorg figures it should use the r500
driver.
> 
> I start with no /etc/X11/xorg.conf. It comes up, mirroring. I use the
> gnome applet - the same thing, btw, with system-config-display - tell it
> to use dual head, and spanning desktops. Exit X.
> 
> Restart, and the second monitor goes into powersave mode. Try to exit X,
> either via logout, or <ctrl><alt><bkspace>, and it goes,
and comes back
> with a bluish screen... and that's all she wrote. It's hung so hard
I
> can't log in via ssh, and have to power cycle it.
> 
> Any clues?
> 
None other than the obvious - use the proprietary drivers.

Catalyst works well with latest Centos and Fedora.


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