could use help debugging black screen on RS780 (xf86-video-ati-6.13.0, radeon)

Ross Vandegrift ross at
Wed Jun 2 09:47:31 PDT 2010

On Mon, May 31, 2010 at 09:52:37PM -0700, Larry Doolittle wrote:
> I got an ATI 790GX motherboard (Biostar TA790GX XE) specifically
> to check out the "fully documented" ATI chipset capabilities.
> Using either Debian Squeeze (xserver-xorg-video-radeon, built
> from xf86-video-ati-6.12.6) or home-built binary built directly
> from xf86-video-ati-6.13.0, screens go black when I start the X
> server.  I can still change back to a text console, at least if
> I use the VGA port.  Using the DVI port, it seems the monitor
> gets confused and I need to cycle the computer and/or the monitor
> to recover.

Do you have a second computer you could ssh in to the first to restart
X from?

I just hit this problem this morning on another computer, this time
with an RV380.  Pretty much exactly what you describe - black screen,
no flicker, nothing fixed it.  I was not able to switch to a text VT,
but that hasn't worked on this box in a long time.

I sshed in from a laptop and restarted X and that fixed it.  This
seems new with xserver-xorg-video-radeon 1:6.12.6-1.  Haven't had a
chance to try the fixes.


Ross Vandegrift
ross at

"If the fight gets hot, the songs get hotter.  If the going gets tough,
the songs get tougher."
	--Woody Guthrie
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