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Old 03-15-2007, 02:14 AM   #1
nnjond
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Distribution: Ubuntu 10.04
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Screen resolution


Hi,
Please can u help me?

I understood i would resolve my res prob by adding 2 lines of monitor spec to my xorg.config.

This is my monitor spec

Horizontal scan range 30 kHz to 96 kHz
Vertical scan range 48 Hz to 120 Hz
+
Optimal preset resolution 1024 x 768 at 75 Hz or 85 Hz
Highest preset resolution 1600 x 1200 at 75 Hz
Highest capable resolution 1600 x 1200 at 75 Hz

This is how xorg.configt looks with the 2 lines inserted. It hasn't worked ?



Section "Device"
Identifier "Generic Video Card"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection

Section "Monitor"
Identifier "ULTRASCANP99"
Option "DPMS"
HorizSync 30-96
VertRefresh 48-120
Modeline "1024x768@85" 100.94 1024 1056 1432 1464 768 782 793 807
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Generic Video Card"
Monitor "ULTRASCANP99"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
EndSection
 
Old 03-15-2007, 03:08 AM   #2
Tinkster
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Now if we knew what exactly your problem is ... or which lines
you added ...

The modline is for 1024x768, but the default resolution is
1280x1024 ...


Cheers,
Tink
 
Old 03-15-2007, 03:44 AM   #3
nnjond
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The 2 lines i inserted appear under

Section "Monitor". they are

HorizSync 30-96
VertRefresh 48-120

i have removed the next line:

Modeline "1024x768@85" 100.94 1024 1056 1432 1464 768 782 793 807

Hoping it would solve the problem. - It hasn't.
 
Old 03-15-2007, 06:00 AM   #4
phantom_cyph
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try this:

http://www.linuxquestions.org/questi...d.php?t=495248
 
Old 03-15-2007, 12:19 PM   #5
Tinkster
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Quote:
Originally Posted by nnjond
The 2 lines i inserted appear under

Section "Monitor". they are

HorizSync 30-96
VertRefresh 48-120

i have removed the next line:

Modeline "1024x768@85" 100.94 1024 1056 1432 1464 768 782 793 807

Hoping it would solve the problem. - It hasn't.
And you still haven't told us what the actual
problem is ... :}


Cheers,
Tink
 
Old 03-16-2007, 03:29 AM   #6
nnjond
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A clarification of my problem ( I hope).

The Dapper screen pref gui default res is 1280 x 1024. This looks most appropriate and i can't alter it to lower resolution in the dropdown. The same applet claims my refresh rate is 86 Hz and likewise i cannot change it, -but my screen looks like 60 Hz, which is the reading my monitor displays when i press a button on the cabinet. This is too low and it trails smears when i move windows.

I can lower the the resolution by deleting the 1st settings ( 1280 x 1024 ) from each modes line in the /etc/X11/xorg.conf but i'm sure these are less appropriate settings.

Somebody said i could use a different driver?

Last edited by nnjond; 03-16-2007 at 09:46 AM.
 
Old 03-16-2007, 02:53 PM   #7
Tinkster
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VESA certainly isn't optimal; what graphics card does the
machine have?


Cheers,
Tink
 
Old 03-16-2007, 03:27 PM   #8
Tux-Slack
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change the driver type from vesa to your driver
i had the same problem a while ago
untill i didn't change vesa to sis
then added my resoluion options here:
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "720x400" "720x350" "640x480"
EndSubSection
 
Old 03-17-2007, 02:23 AM   #9
nnjond
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My graphics card is below; and the vesa driver came with the pc:

SiS Mirage Graphics



Section "Device"
Identifier "Generic Video Card"
Driver "vesa"
BusID "PCI:1:0:0"
EndSection

can i download an alt driver?

Oh,oh! Following advice A, B has happened.


A:
-type "sudo dpkg-reconfigure xserver-xorg"

Choose your graphics card/adapter from the list, follow the text, if there's anything you don't understand press "esc" (this will skip). When you come to resolution, enter 1600x1200 with the space-bar. Choose "medium" for the settings, move down to 1600x1200@75Hz.

This will give you a range of resoloutions between 1600x1200 and 648x480.


B:
All seemed to go perfectly well. However when i restarted, the user and password screens appeared, so i tapped in my details... It halts on a black page of text before returning to the user and password screen. There dosen't seem to be a way in?

Last edited by nnjond; 03-17-2007 at 05:51 AM.
 
Old 03-17-2007, 08:27 AM   #10
gregorian
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Maybe the configuration is already correct and you don't know know how to switch resolutions?

Try going to the desktop and pressing Ctrl Alt + (or) Ctrl Alt - to change your resolution.
 
Old 03-17-2007, 03:57 PM   #11
ed-j
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Smile

Quote:
Originally Posted by Tinkster
VESA certainly isn't optimal; what graphics card does the
machine have?


Tink
Quote A in #9 is from me from the thread: http://www.linuxquestions.org/questi...d.php?t=537622

The thread was running when I first joined, but after no response for a few days I deleted the subscription. Crossed wires? :-)
 
Old 01-29-2008, 02:53 PM   #12
shanka
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Quote:
Originally Posted by Tinkster View Post
VESA certainly isn't optimal; what graphics card does the
machine have?
I have the same Integrated SiS Mirage 3 Graphics Subsytem. Specifically it is the SiS671 series.
And I'm facing the same problem.

I'm using Debian-AMD64-lenny.
Currently the screen is configured through vesa, and I only get 1280x1024. The monitor is 17" and I would like atleast 1440x900.

Adding the required resolution (1440x900) the xorg.conf file did not help.

Then I tried
Code:
dpkg-reconfigure -phigh xserver-xorg
and selected the "sis" driver instead of vesa. But I could not get any display. I got an error saying:
Code:
No devices detected.
Then I found this at the ubuntufourms, but the driver suggested there was only for x86. (I'm on Intel Core2 Duo, and Debian 64 bit)

Any ideas?
 
  


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