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Re: getting external monitors to work with 15" powerbook



Hi Michel,

sorry for the delay, but this has taken me quite a while to put
together.

On Tue, 2003-05-27 at 23:48, Michel Dänzer wrote:

> Sure, NoAccel is never a solution but merely a means to help find out
> what's going on.

Ok, my testing shows no change toggling the NoAccel option (for both
displays at the same time) other than a performance hit.

I have also tried toggling and changes most of the other options listed
in my config (at
http://www.johnleach.co.uk/documents/powerpc/XF86Config-4.dualhead)

The only thing that makes a difference is changing the color depth.
At 24 bit everything has a yellow tinge (removing Blue)
At 16 bit everything is a bit more random, but mostly pink/purple.
(removing Green)
At 8 bit everything looks fine until you start opening applications
(with new colours) that change the palette.  This just starts shuffling
colours around randomly as you change focus.

Back at 24 bit, a colour selector dialog helped me confirm that Red and
Green seem to display ok, but Blue is displayed as black.

> > xfree86-common 4.2.1-6
> 
> Please post the output of
> 
> COLUMNS=125 dpkg -l 'xserver-xfree86*' | grep '^[hi]'

xserver-xfree86 4.2.1-6  the XFree86 X server
xserver-xfree86-dri-trunk 2003.05.04-1  The XFree86 X server [DRI trunk]
(edited slightly to fit to 80 chars)

the dri-trunk stuff is from the following apt source entry:
"deb http://people.debian.org/~daenzer/dri-trunk-sid/ ./"

To make sure this wasn't the problem I rolled back to the standard
packages and tested the same configs, and got the same results.

> 
> grep radeon_drv /var/log/XFree86.0.log
> 
> (or whichever log file is relevant)

[john@peppard]:~$ grep radeon_drv XFree86.0.log.dri
(II) Loading /usr/X11R6/lib/modules-dri-trunk/drivers/radeon_drv.o
(II) Reloading /usr/X11R6/lib/modules-dri-trunk/drivers/radeon_drv.o
(II) Reloading /usr/X11R6/lib/modules-dri-trunk/drivers/radeon_drv.o

I've uploaded log files from three different attempts:

http://www.johnleach.co.uk/documents/powerpc/XFree86.0.log.dri
This is the "dri-trunk" packages, with 2 monitors, producing the yellowy
tinge.

http://www.johnleach.co.uk/documents/powerpc/XFree86.0.log.dri.onemonitor
This is the exact same setup, but just started with the second monitor
unplugged.  I get normal results with the remaining display (the
internal lcd).

http://www.johnleach.co.uk/documents/powerpc/XFree86.0.log.standard
This is the log of the 2 monitor setup, but with the standard Debian
XFree86 packages.  Same yellowy tinge.


I've only just noticed your signature and realised you're a XFree86
developer, I certainly appreciate your help.  Hope this helps.


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