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Old 08-04-2005, 03:50 PM   #1
arjay
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Location: Coin, Spain
Distribution: linux mint, debian lenny
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chose wrong video card at install - help


Just decided to move up and play with the big guys (from kubuntu to debian). Whoooops - maybe not such a good idea! No, it looks very promising - really!!

During the install I stupidly thought the video card in my second computer was a matrox G400. Unfortunately it is not - it is an nvidia p73 - no idea what model etc that is. I chose mga and now, of course, no x server. I swopped out the nvida for an old matrox g200 and have got a desktop but stuck at 800x600. (my screen is 1280x1024). I have edited the xf86Config file but it still only gives me a low resolution. How do I get debian to change from a matrox to an nvida video card?

Thanks for any help
 
Old 08-04-2005, 05:21 PM   #2
Mara
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Post your monitor configuration: Section "Monitor". It's probably something in it. Do you have your monitor manual somewhere? There should be a table in it with a number of values, two interesting ranges are Horizontal Sync and Vertical Refresh.
 
Old 08-04-2005, 05:49 PM   #3
arjay
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Thanks for replying. I thought the problem was with the fact that the install did not recognise my video card and then I chose the wrong one in the manual install. Anyway - I installed a matrox card which gives me an appalling 800x600, but what I really want is to replace the matrox with the original nvidia card (a much better/more recent card) and have debian re-install the card and default drivers.

However, in the meantime - here is an extract from my xf86Config file. Note - I edited the screen name - it is an Eizo Flexscan L685 for what it/'s worth. I could probably find the correct H and V sync settings somewhere - the ones shown below are the defaults created during install. I also stepped down the default depth from 24 to 16.

Section "Device"
Identifier "Generic Video Card"
Driver "mga"
EndSection

Section "Monitor"
Identifier "Eizo"
HorizSync 30-60
VertRefresh 50-75
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Generic Video Card"
Monitor "Eizo"
DefaultDepth 16
SubSection "Display"
Depth 1
Modes "1280x1024" "1024x960" "800x600"
EndSubSection
SubSection "Display"
Depth 4
Modes "1280x1024" "1024x960" "800x600"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1024x960" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1280x1024" "1024x960" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1024x960" "800x600"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x960" "800x600"

EndSubSection
EndSection

BTW I have got the matrox drivers from a previous ubuntu install on another machine and could install those - if I can't find a way, short of a reinstall, to get the original card back in.
 
Old 08-06-2005, 05:46 PM   #4
Mara
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For me the whole thing is because HorizSync and VertRefresh values. From Eizo's website, the right ones for your monitor are:
Scanning Frequency
Analog Input: H: 27- 82 kHz, V: 50 – 85 Hz
Digital Input: H: 27 – 64 kHz, V: 60 Hz (VGA Text: 70 Hz)

To use nvidia's card, just replace
Code:
Section "Device"
Identifier "Generic Video Card"
Driver "mga"
EndSection
with
Code:
Section "Device"
Identifier "Generic Video Card"
Driver "nv"
EndSection
Then go to NVidia site for accelerated drivers. It should work with the generic one, however.
 
Old 08-07-2005, 02:36 AM   #5
arjay
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Distribution: linux mint, debian lenny
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Mara - thanks for your advice. Sorry - I have been a bit absent-minded and forgot to come back to this thread and tidy up. I had actually changed the driver statement from mga to nv and that fixed things. It all works OK now but maybe I should think about getting more specific drivers from the web site as you say.

On the other hand - one thing I have learned as a linux newbie is "when things are working OK it is sometimes best just to leave them alone"!!

BTW - how would I know if my monitor is using analogue or digital settings? It is an LCD screen with two identical input sockets but they just say "input 1" and "input 2". I have tried the on-screen menu but it doesn't seem to give much info. It reports 1280x960 and fH= 59.9 kHz and vH=60.0 Hz. I also find VESA - DPMS and that's about it.

Thanks again.

Richard
 
Old 08-08-2005, 04:28 PM   #6
Mara
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It's all about cable you connect your monitor to your computer. If it's the same as for CRT monitor - you have analog input.
 
Old 08-09-2005, 02:26 AM   #7
arjay
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Thanks for clearing that up - it looks like an analogue connection to me ...
 
  


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