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tank
Tux's lil' helper
Tux's lil' helper


Joined: 28 Aug 2002
Posts: 116
Location: Virginia

PostPosted: Tue Dec 09, 2003 8:42 pm    Post subject: Mirror Dual Displays Reply with quote

Ok I have a laptop with a Radeon mobile 7500 /32MB ram. I connect it to a 19" Monitor when at work, however when not at work I want to maintain the use of the LCD.

I currently have that setup. However both displays are at the same res. The Laptop display only supports 1024x768, however the Monitor can handle up to 1600x1280. I know the video card will output higher res on the video output. However I do I setup XFconfig to output 1280x1024 to the monitor and only 1024x768. Note I am not interested in "streching my desktop" across both displays.
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amasidlover
Apprentice
Apprentice


Joined: 16 Jun 2002
Posts: 293
Location: Manchester, UK

PostPosted: Wed Dec 10, 2003 2:12 pm    Post subject: Reply with quote

I currently do dualhead in the way that you don't want, however the way I do it is to have two XF86Config files one for dualhead and one for not - you'd use one for the high res and one for the low-res.

In local.stop you have a line which copies XF86Config.lowres to XF86Config and in local start you have a line which asks if you want to be in hi-res mode e.g. :
Code:
if read -t 5 -p 'DualHead Mode? (y/n) ' DUAL
then
        if [ "$DUAL" == "y" ]
    then /usr/sbin/dualhead
    fi
fi

where dualhead is a script which copies the dualhead (or hires) version of XF86Config.hires onto XF86Config.

Remember to keep copies of the files though!

Its not automatic - this can only be done if your chipset can detect the monitor prescence, as far as I can tell most can't.
But logging in to an ordinary console as root and typing
Code:
dualhead ; killall -HUP X ; exit
is a very quick way to switch it if you miss the prompt.
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tank
Tux's lil' helper
Tux's lil' helper


Joined: 28 Aug 2002
Posts: 116
Location: Virginia

PostPosted: Wed Dec 10, 2003 2:18 pm    Post subject: Reply with quote

Very good idea. One change I may make is instaed of coping the file, making a symbolic link to the choosen XFconfig mode.
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tank
Tux's lil' helper
Tux's lil' helper


Joined: 28 Aug 2002
Posts: 116
Location: Virginia

PostPosted: Wed Dec 10, 2003 11:13 pm    Post subject: Another Question Reply with quote

I have gotten Dual Displays working with my T40 thinkpad with Radeon mobile 7500 using Xinerma. However I can not seem to make the external monitor the Primary. Is there a way to make the external monitor the primary on a Laptop? If not, is there a way to put the Kicker in KDE on the secondary display?
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amasidlover
Apprentice
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Joined: 16 Jun 2002
Posts: 293
Location: Manchester, UK

PostPosted: Thu Dec 11, 2003 9:11 am    Post subject: Reply with quote

In Gnome its just a case of dragging the bar across the screen. For some reason my KDE install is dead so I can't help with that...
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