Dual (zaphod) head on Intel i810 does not work for FreeBSD
tevans.uk at googlemail.com
Fri Aug 29 14:06:40 UTC 2008
On Fri, 2008-08-29 at 17:56 +1000, Ray Newman wrote:
> Under FreeBSD V6.2 Release (X 6.9.0 and i810 1.4.1) with this
> xorg.conf, this log file
> is produced and the dual screen config works.
> Under FreeBSD V7.0 Release (X 1.4.0 and i810 1.6.5) with this xorg.conf which is nearly
> identical with the previous one, this log file is produced and the dual screen doesn't work.
> It seems to get the primary and secondary screens totally confused.
> Ray Newman
> 29 Aug 2008
With X 1.4, use driver intel ( x11-drivers/xf86-video-intel ) and xrandr
to achieve the same effect. This has the benefit of dynamically enabling
or disabling additional heads. The configuration is slightly different,
here is a pertinent snippet from mine for comparison. There is only one
device, screen and monitor specified in the conf.
VendorName "Intel Corporation"
Option "DRI" "true"
BoardName "Mobile Integrated Graphics Controller"
Viewport 0 0
Virtual 2680 1050
My laptop has an internal 1400x1050 screen, and also a 1280x1024
external screen to its left. It's enabled from my .xinitrc with a
command like 'xrandr --output VGA --mode 1280x1024 --left-of LVDS'.
Apparently due to hardware limitations, if your 'Virtual' is more than
2048x2048 in any dimension, then DRI won't work.
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