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Old 06-29-2012, 11:38 AM   #1
ismaelvc
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Registered: Jun 2012
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How to enable dual display? (mach64/ATI Rage Mobility)


Hello everyone!

I would like to use another monitor I just got, that I connect to my laptop: (Sony Vaio PCG-FXA679, 256M ram + zramswap + 512M swap, AMD Duron @1100 Hz)

Code:
ismaelvc@toybox ~ $ lspci -vvv | grep ATI
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Rage Mobility P/M AGP 2x (rev 64) (prog-if 00 [VGA controller])
The extra monitor displays exactly the same that gets displayed at my laptop, but I dont get how to enable the other monitor as an extencion of the current one, I have red the arch wiki, but all examples are under the suposition thta xrandr -q detects the other monitor, but this is not my case:

Code:
ismaelvc@toybox ~ $ xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 175, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768       87.0*    85.0     75.0     70.0     60.0     81.0  
   832x624        75.0  
   800x600        85.0     75.0     72.0     60.0     56.0  
   640x480        85.0     75.0     73.0     60.0  
   720x400        85.0  
   640x400        85.0  
   640x350        85.0  
   512x384        87.0     85.0     75.0     70.0     60.0  
   416x312        75.0  
   400x300        85.0     75.0     72.0     60.0     56.0  
   320x240        85.0     75.0     73.0     60.0  
   360x200        85.0  
   320x200        85.0  
   320x175        85.0
this is my original post at arch forums:

https://bbs.archlinux.org/viewtopic.php?id=144193

I don't post all the info I posted there because I don't really know if its relevant.

Thanks in advance!

Last edited by ismaelvc; 06-29-2012 at 11:41 AM.
 
Old 06-30-2012, 08:04 PM   #2
jschiwal
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For a laptop, you may need to power cycle the laptop before a newly connected monitor is detected.

Also check the BIOS and the Fn key which cycles through the video output.

Last edited by jschiwal; 06-30-2012 at 08:06 PM.
 
Old 07-01-2012, 10:47 AM   #3
mixtr
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Registered: Jul 2004
Location: Ottawa
Distribution: Arch, OpenBSD
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One way to do it is xrandr --output VGA-0 --auto --right-of LVDS, you may need to play with the options a little to make it look the way you like.
 
Old 07-02-2012, 09:02 AM   #4
ismaelvc
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Registered: Jun 2012
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It doesn't seem to work, the problem is it doesn't even gets detected, yet it perfectly displays a mirror image of what is on my laptop.

Code:
ismaelvc@toybox ~ $ xrandr --output VGA-0 --auto --left-of LVDS
xrandr: Failed to get size of gamma for output default
warning: output VGA-0 not found; ignoring
 
Old 07-02-2012, 10:03 AM   #5
mixtr
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Registered: Jul 2004
Location: Ottawa
Distribution: Arch, OpenBSD
Posts: 123

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According to your xrandr output, you only have one display, it should list the other output even if there is nothing plug in them. You may have to check or change you video card driver.
 
Old 07-03-2012, 09:01 AM   #6
ismaelvc
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Registered: Jun 2012
Posts: 10

Original Poster
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Thank you very much for your time and responses, I'm almost giving up, I guess it's just too old hardware, and dual display is not supported, at least I can use my TV as screen even if its not exactly what I wanted, but any way, this weekend (sunday) I will give it a go again for the last time and see if I can actualy make it work. (I've been posting in another forums, about this, and it looks like there is no solution) If I can't put it to work then that's as far as I go with this issue, thanks again!

EDIT:

@mixtr:
I will try to find any past reference in old posts, with google, and see if I can find confirmation, maybe this feautre never even worked, with this chipset, arch wiki does say it never recieved that much support. I hope I can find some evidence of it working with an older driver maybe? If I do I'll try to build it and test it.

Last edited by ismaelvc; 07-03-2012 at 09:12 AM.
 
  


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