[Bug 16441] Display is washed out on 2nd monitor - ATI ES1000 chipset

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=16441





--- Comment #35 from Geoff N <geoff at linuxsolve.co.uk>  2008-09-12 04:38:22 PST ---
Ok. xrandr isn't working for me. Probably because I'm on the virtual text
terminals. exporting the DISPLAY isn't helping either. It's not the way we want
to proceed anyway. My client needs to just turn on the monitor (connected to
VGA-0) and see the display. I'm guessing there isn't a way to detect when a
monitor has been connected and hook that into xrandr --auto ?

Notes following refer to files in attached xorg-tests.tar
The problem seems to be that VGA-1 always detects a Color CRT monitor even when
nothing is connected. (See Xorg.0.log.no_monitors). Which is great if I was
using that output. I can connect a monitor at any time / or power it on and it
just works. What I need is to force this same behaviour with VGA-0.

So I tried modifying xorg.conf. I disabled VGA-1 and enabled VGA-0. I don't
want to specify the Modelines as I can't guarantee what monitor our customer
will eventually connect. That didn't work. See Xorg.0.log_modified_xorg_conf.
It needs a valid screen to start X and as none have been detected it fails.

I've attached Xorg.0.log_monitor_VGA_0 as well which is the log for when a Dell
LCD monitor is connected via VGA-0 and nothing is connected to VGA-1. It still
detects a color CRT on VGA-1.

>I'm not sure I follow you.  In the log you attached in comment #30, the driver
>is able to get an EDID from VGA-1.  So either you didn't have a monitor
>attached when you started X, or the driver isn't able to get an EDID from
>VGA-0.
I was assuming that some default I2C / EDID activity is occurring on VGA-1 even
when no monitor is connected on this port as the Xorg.0.log is always reporting
that a Color CRT is detected. Hence maybe the Vendor has done something unique
in their hardware here to force this specific behaviour?

Thanks for your continued help with this. 

Geoff.


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