Resolution problem in 11.04

[This_is_mike]

So fist i tried updating ubuntu from 10.10 to 11.04. It didn't work out, i got just a black screen trying to load new ubuntu. Nevermind, after multiple tries to recover it i simply installed ubuntu 11.04 over it. It works fine now, but i already got some problems :( Mainly, i can't find a way to pick the appropriate resolution.

I have a 19" monitor with 1280x1024 resolution, video card is nvidia 8500gt. Any GUI tool (nvidia driver settings or 'monitors' tool) doesn't allow me to pick what i want.

xorg.cong is nearly empty, that's all what i have there


Section "Device"
Identifier "Default Device"
Option "NoLogo" "True"
EndSection


I did some google searches and found out about Xrandr (i'm not much a techy really). That's what i get running xrandr in the terminal


xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
1024x768 50.0*
800x600 51.0 52.0 53.0
680x384 54.0 55.0
640x480 56.0
512x384 57.0
400x300 58.0
320x240 59.0
“1024x768_60.00″ (0x17f) 63.5MHz
h: width 1024 start 1072 end 1176 total 1328 skew 0 clock 47.8KHz
v: height 768 start 771 end 775 total 798 clock 59.9Hz


Quite embarrassing... Any thoughts?

[dino99]

follow this link to modify the "monitor" part (sudo gedit /etc/X11/xorg.conf)

http://ubuntuforums.org/showpost.php?p=10742921&postcount=7

[This_is_mike]

Sorry, i'm really not sure which options i should set.

[dino99]

have you edited /etc/X11/xorg.conf ? (or created using nvidia-settings) then modify it by adding HorizSync & VertRefresh values of your monitor


Section "Monitor"
Identifier "Configured Monitor"
# add these custom lines with the monitor doc values to workaround boot issue
HorizSync 31.0 - 48.0
VertRefresh 56.0 - 65.0
Gamma 1
# adapt these values depending on your monitor
EndSection

[teachop]

I think I would do an experiment from the command line, using xrandr which you have already used, as you know the resolution that you are looking for...

Since the modeline isn't being show with xrandr, first I would try the utility gtf or something similar to create it.

Then, xrandr --newmode can be used with the resulting new modeline.

Then, xrandr can set the output to use the modeline.

Then, if it all does what you want, it can be made permanent but I have to search that, just saw that in a post earlier today.

EDIT: This looks really close to what I was thinking to do:http://www.ubuntugeek.com/how-change-display-resolution-settings-using-xrandr.html

[This_is_mike]

have you edited /etc/X11/xorg.conf ? (or created using nvidia-settings) then modify it by adding HorizSync & VertRefresh values of your monitor


Section "Monitor"
Identifier "Configured Monitor"
# add these custom lines with the monitor doc values to workaround boot issue
HorizSync 31.0 - 48.0
VertRefresh 56.0 - 65.0
Gamma 1
# adapt these values depending on your monitor
EndSection


Sorry again... Can you please point out which values i should set for HorizSync & VertRefresh? THis is what i googled out about my monitor specifications http://reviews.cnet.com/lcd-monitors/benq-fp93g-lcd-display/1707-3174_7-32549764.html , but i can't seem to find the figures i'm looking for

[This_is_mike]

I googled some examples and set


HorizSync 31.0 - 83.0
VertRefresh 56.0 - 76.0

It did the trick. Now i can set the proper resolutuion. Have i dove everything right? In this case, we can close the thread :D

[This_is_mike]

eh, the only thing still remaining is the fact the resolution reverts to 'auto' instead of 1280x1024 like it should be after a restart. And 'auto' strangely is 1024x768. How can i avoid this?

I know, you must be hating me already :D