"Unknown Monitor" and cant increase resolution beyoud 800x600

Team,

Issue: Display preferences shows "Unknown Monitor" and I can't increase resolution above 800x600.

System and Hardware details:
Ubuntu : v9.10
Motherboard : Asus P5KPL-AM/PS
Display Driver: Intel Corporation 82G33/G31 Express Integrated Graphics Controller [8086:29c2] (rev 10)

Details: the resolution i am using is too small. i want to increase the resolution. when i am pressing the "Detect Monitors" it shows "unknown Monitor" also the resolution is restricted to 800x600.

I am a first time user of Linux. Thanks to Ubuntu team for wonderful OS. Please let know what i have to do. i Googled a lot on "intel G33 driver for linux", "Unknown Monitor" on Ubuntu/Google webiste but believe could not find the right solution.

i think Ubuntu v9.10 already provides the Intel G33 display driver because i was downloading/installing something and it said "Error: the later version is already installed".

If i need to download/install something request to provide step/by/step procedure. Because yet i am not able to understand from where/how to install make/compile code. where to place the downloaded files etc.

Thanks / Regards,
AJ

What kind of monitor do you have, CRT or LCD? What's the size and resolution of it?

Monitor Details:
Manufacturer: DAEWOO 431X
Type : CRT
i can set normally 1280x1024 resolution. i think its 14".

Is this your monitor?

http://www3.dealtime.com/xPF-Daewoo-431X-14-in

You have the wrong resolution there since according to the link, the max is 1024 x 768.

Yes Taurus, this is the one i am using. sorry for the incorrect resolution earlier.

Please refer attached screencap of 'Display Preferences' it shows a maximum of 800x600.

First open a terminal

Quote:

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Applications >> Accesories >> Terminal

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in the terminal type :
1)

Code:

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$ xrandr

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(without the $ mark)
this will display the allowed resolutions
something like this :

Quote:

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Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
VGA1 connected 800x600+0+0 (normal left inverted right x axis y axis) 267mm x 200mm
800x600 85.1* +
640x480 75.0 60.0
720x400 70.1

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then type
2)

Code:

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$ cvt 1024 768

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(any resolution that you want similar to this)

the output will be similar to this :

Quote:

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# 1024x768 59.92 Hz (CVT 0.79M3) hsync: 47.82 kHz; pclk: 63.50 MHz
Modeline "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync

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3)

Code:

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$ xrandr --newmode <Modeline>

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(copy the modeline of the previous output to the place mode line)
for example :

Code:

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$ xrandr --newmode "1024x768_60.00"  63.50  1024 1072 1176 1328  768 771 775 798 -hsync +vsync

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4)

Code:

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$ xrandr --addmode VGA1 1024x768_60.00

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(here for VGA1 you have to use what ever that was there for $ xrandr output in step 1)

5)

Code:

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$xrandr --output VGA1 --mode 1024x768_60.00

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(replace VGA1 accordingly, remember to use the numbers within inverted commas in step 3 , after --newmode for 1024x768_60.00 )

***Running these would change your resolution but this is temporary.these steps were done to make sure that these commands work . After step 5 you should see the resolution change.If this is successful proceed to the next step

6)

Code:

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$ sudo gedit /etc/gdm/Init/Default

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(this will ask for your root password type the password and a text editor will appear)
in this you will see a text line like this

Quote:

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PATH=/usr/bin:$PATH
OLD_IFS=$IFS

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just below this paste the step 3 to 5 commands
and then save it.

example :

Quote:

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#!/bin/sh
# Stolen from the debian kdm setup, aren't I sneaky
# Plus a lot of fun stuff added
# -George

PATH=/usr/bin:$PATH
OLD_IFS=$IFS
xrandr --newmode "1024x768" 70.00 1024 1072 1176 1328 768 771 775 798 -hsync +vsync

xrandr --addmode VGA1 1024x768_60.00

xrandr --output VGA1 --mode 1024x768

if [ -x '/usr/bin/xsplash' ];

then
/usr/bin/xsplash --gdm-session --daemon

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this worked in karmic ......I think this will be helpful to you if you want know more about xrandr

Quote:

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If step 6 isn't working then read this post by mpatrick
http://ubuntuforums.org/showthread.php?t=1364460&page=5

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Thank you mpatrick..

It worked!!!

Thanks a lot sharaq. only thing i changed in step 4
xrandr --addmode VGA1 1024x768


to
xrandr --addmode VGA1 1024x768_60.00

Thanks again sharaq and taurus. the monitor still shows "unknown" but i am happy with 1024x768 resolution :-)

if you want you can change the refresh rate to a much higher value if you want, may be 70.00or something... it is better for you eyes.... to do that just change the values 60.00

Hello, I have the same 800x600 problem. I followed your advice to stage 3 and got this reply:-
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 149 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 21
Current serial number in output stream: 21
If you can help in any way I'd be very grateful
Thankyou.......sarum

what is the operating system you are using? is it ubuntu 5.10??
I've used this in 9.10..

if you miss out any part of the output it gives this error message(which you have copied from the step 2)recheck it. I think you have missed the last part of it ,most likely, the part in bold letters.

Quote:

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$ xrandr --newmode "1024x768_60.00" 63.50 1024 1072 1176 1328 768 771 775 798 -hsync +vsync

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hope this will help you....