ATI 9550 + dodgy monitor = No X windows

Steve yorvik.ubunto at googlemail.com
Sun Jan 10 12:20:23 UTC 2010


On Sun, 10 Jan 2010 04:37:37 -0000, Rodney Schuler <rschuler at gmail.com>  
wrote:

> I have a ubuntu 9.04 installed.  I was using the integrated i845 chip set
> graphics.  I am trying to upgrade to using a ATI 9550 card.  The monitor  
> is
> a dodgy gateway2000 Vivitron 1776.  This monitor works just fine, except  
> no
> video system seems to be able to pull the specs from this monitor.  No  
> linux
> distro has ever worked out of the box with this monitor.  I always have  
> to
> add a monitor section like:
>
> Section "Monitor"
>         Identifier  "Gateway Vivitron 1776"
>         HorizSync  31.5 - 64
>         VertRefresh  50-120
>         Option  "DPMS"
> End Section
>
> To my xorg.conf.
>
> Even windows does not correctly "see" this monitor.  Windows just  
> defaults
> to the lowest possible resolution and refresh and lets me point & click  
> to
> the resolution I want.
>
> I have connected the dodgy monitor to the DVI port of ATI 9550 card  
> through
> a DVI->VGA adapter that I have used successfully on other system.  The
> system displays the boot and BIOS screens without troubles.   The
> alt-shift-fn terminals work but I can get no X11 style graphics.  I have
> tried auto(re)configuring my xorg.conf.  I have hand edited my xorg.conf.
>  Through all these changes I consistently get 2 errors
> in /var/log/Xorg.0.log I am getting 2 errors.  Here are the lines around  
> the
> errors.  (Reproduced by hand - may have typos)
>
> (II) RADEON(0): Output: VGA-0, Detected Monitor Type:0
> finished output detect: 0
> (II) RADEON(0): I2C device "DVI-0:E-EDID segment register" registered at
> address 0x60.
> (II) RADEON(0): I2C device "DVI-0:ddc2" registered at address 0xA0.
> (II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
> Unhandled monitor type 0
> finished output detect: 1
> (II) RADEON(0): Output: S-video, Detected Monitor Type:0
> finished output detect: 2
> (EE) RADEON(0): No connected devices found!
> finished all detect
> before xf86InitialConfiguration
> (II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0
> (EE) RADEON(0): Using CRT default
> (II) RADEON(0): Total number of valid Screen mode(s) added: 0
> Unhandled monitor type 0
> (II) RADEON(0): Output: S-video, Detected Monitor Type: 0
> (II) RADEON(0): Output VGA-0 connected
> (II) RADEON(0): Output DVI-0 disconnected
> (II) RADEON(0): Output S-video disconnected
>
> Here is my current xorg.conf
>
> Section "Monitor"
>         Identifier  "Gateway Vivitron 1776"
>         HorizSync  31.5 - 64
>         VertRefresh  50-120
>         Option  "DPMS"
> End Section
>
> Section "Screen"
>         Identifier  "Gateway Vivitron 1776 on Radeon 9550"
>         Device  "Radeon 9550"
>         Monitor  "Gateway Vivitron 1776"
> End Section
>
> Section "Device"
>         Identifier  "Radeon 9550"
>         Driver "ati"
>         BusID  "PCI:1:0:0"
> End Section
>
> Section "ServerFlags"
>         Option  "DontZap"  "false"
> EndSection
>
>
> So, what do I need to add to my xorg.conf to get the dodgy monitor to  
> work
> with the ATI 9550 card?  I think that I just need a way to tell the  
> radeon
> driver to ignore the auto detection results ad just output to that dvi  
> port.
>  How do I do that?
>
A few suggestions to try:-

The proprietory drivers may be better

  	System > Aministartion > Hardware Drivers

will install them.

http://www.monitorworld.com/Monitors/gateway2000/vivitron1776.html shows a  
different frequency range for your monitor.

Have a look at xrandx for setting the display size

-- 
Steve




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