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Old 03-04-2007, 04:36 AM   #1
nnjond
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Distribution: Ubuntu 10.04
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Vibrating eyes


My 19' Trinitron is fine in MS Windows, but in Dapper it's, unquiet and dragging windows leaves momentary vestiges.

The Defaults under prefs are:

Resolution: 1280x1024 (greatest possible)

Refresh rte 86 Hz (apparently no other option)

do i need a new driver or something ?
 
Old 03-04-2007, 05:54 AM   #2
AwesomeMachine
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you need the specs for your monitor. If you google +"<model number>" somewhere in the list of hits will be a spec sheet. You need horizontal scan range and vertical scan range in Hz and KHz. You edit /etc/X11/xorg.conf and put the correct frequency ranges in it. Save the file first as xorg.conf.old so if you mess up you can have a copy. Restart X with ctrl+alt+backspace

Last edited by AwesomeMachine; 03-04-2007 at 05:55 AM.
 
Old 03-06-2007, 11:29 AM   #3
ed-j
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Smile

Quote:
Originally Posted by nnjond
My 19' Trinitron is fine in MS Windows, but in Dapper it's, unquiet and dragging windows leaves momentary vestiges.

The Defaults under prefs are:

Resolution: 1280x1024 (greatest possible)

Refresh rte 86 Hz (apparently no other option)

do i need a new driver or something ?
Hi !

Please post in with the spec' of your computer. Could you also say which version of Linux you are using. Depending on your system, you will find a surprising amount of drivers are actually a "part" of the Linux Operating system.

All the best! :-)
 
Old 03-07-2007, 02:46 AM   #4
nnjond
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Hi ! Thanks for your interest. I don't know if it's me or what, but complications have multiplied! here is an up date on my predicament.


Contrary to the Ubuntu scrn res aplet, my monitor tells me the present res is 60hz.

Monitor is Dell P990 UltraScan Color Monitor.

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

I understand my task is to find, and then edit the xorg.conf by including some of the above data.



gksudo gedit /etc/X11/xorg.conf -yeilds this at 1st:

nnjond@nnjond-desktop:~$ gksudo gedit /etc/X11/xorg.conf
(gedit:15741): GnomeUI-WARNING **: While connecting to session manager:
Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed.

-But then xorg.conf opens. My Monitor edition now looks like this, but the problem is unchanged.


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 03-07-2007, 05:01 AM   #5
ed-j
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Smile Resolution

Please post and tell me what version of Linux you are using. Thanks. :-)
 
Old 03-07-2007, 03:00 PM   #6
nnjond
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dapper Drake
 
Old 03-08-2007, 02:10 AM   #7
ed-j
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Smile

Quote:
Originally Posted by nnjond
dapper Drake
HI nnjond!

From my experience, the highest res' in Dapper is 1280x1024@85Hz. You should be able to change it to 1024x768 and 800x600 on a CRT, but not on an LCD/TFT.

The problem with "vestiges" is either a poor grahics adapter, or one that you have no drivers for. If you type lspci or lspci -X into Terminal, it will tell you the what and where about your grahics adapter.

More after this. Good luck! :-)
 
  


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