On 04/03/10 04:39, Alex Deucher wrote:
On Wed, Mar 3, 2010 at 3:04 AM, Michael Cree<mc...@orcon.net.nz> wrote:
Package: xserver-xorg-video-ati
Version: 1:6.12.4-3
Severity: important
On X startup monitor goes comletely dead, i.e., no signal on DVI output with
a Radeon RV610 card on Alpha architecture. On another Alpha with a Radeon
R100 card output (on VGA) comes up fine so appears problem is only seen with
newer Radeon cards.
Interestingly if I compile debian source for the ati driver with the -mbwx
compiler flag (which permits the compiler to use the byte-word extension
supported only on Alpha CPUs since the EV56) then I get a working radeon
video driver on the Alpha with the RV610 video card. The display comes up
fine and dandy.
This is suggestive that somewhere in the Radeon driver a byte or word access
is being made into the video card's register bank without going through the
Xserver's MMIO_IN/OUT routines.
I wonder if it's the legacy vga save/restore. Does:
Option "VGAAccess" "FALSE"
help?
No, that doesn't help. Still get no output.
The following lines were seen in the Xorg.log confirming that the option
was indeed acted upon:
(**) RADEON(0): Option "VGAAccess" "FALSE"
(II) RADEON(0): VGAAccess option set to FALSE, VGA module load skipped
Cheers
Michael.
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