Re: how to display to laptop screen and projector?

From: Haral Tsitsivas (haral_at_unisol.com)
Date: 09/26/03 

Date: Fri, 26 Sep 2003 19:35:49 GMT

Dances With Crows wrote:
>
> On Wed, 24 Sep 2003 14:34:21 GMT, Binh Nguyen staggered into the Black
> Sun and said:
> > Haral Tsitsivas wrote:
> >> How can I display an X-Windows session to both my laptop screen and
> >> and a projector at the same time? When I boot Red Hat Linux 7.3 with
> >> an external monitor connected then the monitor displays but not the
> >> laptop display. Toggling thru Fn-F7 (where my X-server shows) has no
> >> effect on Linux, but performs the expected switching on Windows,

> >> I have a Sony Vaio laptop with a Radeon 7500 display adapter.
>
> On my Thinkpad A22p, which has an ATi Rage128, it was necessary to put
> the line
>
> Option "Display" "BIOS"
>
> ...in the right part of /etc/X11/XF86Config for Fn-F7 to work properly.
> This option is not relevant for the "radeon" X module, though, only for
> the r128.
>
> >> I tried using Option "crt_screen" that was documented for other
> >> I also tried various values for options CloneDisplay
>
> A quick scan through "man radeon" makes me think you'd need to do this:
>
> Option "MonitorLayout" "LVDS, CRT"
> Option "CloneMode" "1024x768" # or something
>
> ...but I've never used a Radeon display adapter and may be missing
> something. You might want to post your /var/log/XFree86*.log file(s)
> on you rwebspace and post a URL here, so people can see them and look
> for clues/problems.

According to the man page I should be able to do this by using options
CloneDisplay and CloneMode, however, after you mentioned the log files
I noticed this:

(**) Option "dpms"
(**) RADEON(0): DPMS enabled
(WW) RADEON(0): Option "CloneDisplay" is not used
(WW) RADEON(0): Option "CloneMode" is not used
(WW) RADEON(0): Option "MonitorLayout" is not used
(II) RADEON(0): Direct rendering disabled

Since MonitorLayout is not mentioned in the man page I could understand
that, but CloneDisplay and CloneMode too?

This is what I specified in the XF86Config-4 file:

        Option "CloneDisplay" "2"
        Option "CloneMode" "1024x68"
        Option "MonitorLayout" "LVDS,CRT"

Two log files (XFree86.0.log and XFree86.1.log) as well as my XF86Config-4
file are placed in the web directory below... I also placed there the
XF86Config file, although I am not sure if that is used at all!

http://www.haral.com/x 

-- 
--Haral Tsitsivas,  UniSolutions Associates (http://www.unisol.com/)
  IT Consulting, System and Network Security, System Accounting and Chargeback
  Voice: (949) 488-3960,  Fax: (949) 443-5354,  E-mail: haral@unisol.com