Monitor is "out of range" on a 1024x768 resolution

[Gustavo]

Hello.

 

I have been trying to set my monitor's resolution to 1024x768, but I got the next error message:

Attention

Out of range

H:56.4KHz    V:70.0Hz

 

The current resolution is 800x600, and I'm using Mandrake 10.1, KDE 3.2 and an AOC monitor. I also found this on the monitor's box: 1024 x 768 @ 60Hz Max Resolution.

 

I've seen on these forums that I have to edit the /etc/X11/xorg.conf file, but I don't know what's what I have to edit exactly. Anyway, a part of my xorg.conf file looks like:

 

Section "Monitor"
   Identifier "monitor1"
   VendorName "Plug'n Play"
   HorizSync 30-56
   VertRefresh 50-120
   
   # Sony Vaio C1(X,XS,VE,VN)?
   # 1024x480 @ 85.6 Hz, 48 kHz hsync
   ModeLine "1024x480"    65.00 1024 1032 1176 1344   480  488  494  563 -hsync -vsync
   
   # Dell D800 and few Inspiron (16/10) 1280x800
   ModeLine "1280x800"  147.89  1280 1376 1512 1744  800 801 804 848
   
   # Dell D800 and few Inspiron (16/10) 1680x1050
   ModeLine "1680x1050"  214.51  1680 1800 1984 2288  1050 1051 1054 1103
   
   # Dell D800 and few Inspiron (16/10) 1920x1200
   ModeLine "1920x1200" 230 1920 1936 2096 2528 1200 1201 1204 1250 +HSync +VSync
   
   # TV fullscreen mode or DVD fullscreen output.
   # 768x576 @ 79 Hz, 50 kHz hsync
   ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630
   
   # 768x576 @ 100 Hz, 61.6 kHz hsync
   ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection


Section "Screen"
   Identifier "screen1"
   Device "device1"
   Monitor "monitor1"
   DefaultColorDepth 24
   
   Subsection "Display"
       Depth 8
       Virtual 800 600
   EndSubsection
   
   Subsection "Display"
       Depth 15
       Virtual 800 600
   EndSubsection
   
   Subsection "Display"
       Depth 16
       Virtual 800 600
   EndSubsection
   
   Subsection "Display"
       Depth 24
       Virtual 800 600
   EndSubsection
EndSection

 

I hope you can help me... Thanks in advanced!

 

Cheers.

Edited October 1, 2005 by Gustavo

[Aomighty]

Does 1024x768 work in Windows? If it doesn't, it's just your monitor.

 

However, if it does, you'll have to edit your xorg.conf. There's a few ways to do this. If you know your monitor's horizontal and vertical sync rate (should be found on your monitor manufacturer's site), you can input that in the file, which may fix it. The other thing you can try is editing your xorg.conf to include that resolution at the right color depth (probably 24).

[Gustavo]

Hi, Aomighty and thanks for your response.

 

That resolution does work in Windows... I've tested it.

 

According my monitor's specs, the scan frecuency is: 30K~56KHz for horizontal and 50~120Hz for vertical, so I think that the 'Section "Monitor"' into my xorg.conf file is right.

 

So, now do I have to modify the xorg.conf file in the Screen section, from:

    Subsection "Display"
      Depth 24
      Virtual 800 600
  EndSubsection

 

to:

    Subsection "Display"
      Depth 24
      Virtual 1024 768
  EndSubsection

?

 

I have not tested these configuration settings because I've read that if I put wrong data into this file, I could damage the monitor... I'm not sure if that's right, anyway, I'd rather to know what you think about it because It doesn't seem to be that difficult (or at least that's what I think).

 

please...

 

Thank you for reading this post.

 

Regards.

[Aomighty]

No problem :).

 

Ok,

#1. Backup your /etc/X11/ directory, that way if you screw something up you can copy it back.

 

#2. It looks like the correct values are already there, you shouldn't need to change anything in the Monitor section.

 

#3. In the Screen section, what you proposed doing should work, though keep the 800x600 option there as well just in case you need to switch back to it. For example, mine is:

 

SubSection "Display"

Depth 24

Modes "1024x768" "800x600" "640x480"

EndSubSection

 

Thus enabling 1024x768, 800x600 and 640x480. After saving your changes, test them with ctr+alt+backspace then change the resolution in the GUI (KDE, Gnome or whatever).

 

As for your monitor dying, if you know 1024x768 works, it should be fine. If you lose your display, just go ctr+alt+F1 and copy your old config file that's unchanged back and then switch back to the display with ctr+alt+F7 then use ctr+alt+backspace to restart X.

 

Hope that helps :).

Edited September 27, 2005 by Aomighty

[dexter11]

Although I'm not a doctor but I don't recommend to use this monitor at 1024x768 since it can only do 60Hz with it. That's not healthy, it will damage your eyes. It should be minimum 75 Hz but the higher the better.

PS. I take your monitor is a CRT from your monitor specs not a TFT/LCD but if it is forget what I wrote.

[AussieJohn]

Instead of playing around with the CLI and writing settings, I would suggest you install monitor-edid rpm instead. Use MCC to do it because it should be on the install CDROMs. Once you have installed it open MCC at Hardware -----------> Configure your Monitor then double click on Plug'n Play and with luck your monitor type will come up and it will make the appropiate edits to appropiate files. Click on OK at the bottom.

Open KDE Control Centre -------> Peripherals --------> Display and change the display to what you want. Click Apply at the bottom and you are done.

 

Cheers. John.

[AussieJohn]

Dexter you have the right idea but you are not really correct. 60 hz is the threshold at which eyesight is usually no longer sensitive to image frame rate changes as lower frame rates.

At or under 60hz it can cause eyestrain and headache but only damage if persistant or straining. Tv has a low frame rate just below 60 hz that is why bright parts of the screen seem to have a flickering effect. The new HDTvs mostly now have a frame rate of 100hz and as a result the image appears rock solid.

Anything from 61hz up is a benefit but long term staring at the screen will still cause strain and headache and if ignored can still cause long term damage no matter what the screen refresh rate is.

 

 

Cheers. John. (formerly a Medical Electronics Engineer)

[daniewicz]

For me 60 Hz is uncomfortable and annoying. I need 75 Hz +

[Gustavo]

Hello.

 

Thank you all for your responses.

 

I didn't know that about the screen refresh rate, so I'll only use a 1024x768 resolution when I really need it. I spend a lot of time on the computer, thus that's something I must have into account.

 

Now I'm going to try the 2 suggestions you gave me, and I'll tell you what happened.

 

Cheers.

[Gustavo]

Aomighty, I did what you told me, but It doesn't seem to work.

 

I tried it in 3 different ways:

 

The first (I got the "out-of-range" error message):

SubSection "Display"

Depth 24

Modes "1024x768" "800x600" "640x480"

EndSubSection

 

The second (nothing happens):

SubSection "Display"

Depth 24

Virtual 800 600

Modes "1024x768" "800x600" "640x480"

EndSubSection

 

The third (I got the "out-of-range" error message):

SubSection "Display"

Depth 24

Virtual 1024 768

EndSubSection

 

Did I do anything wrong?

 

Thanks in advance.

 

Cheers.

[Gustavo]

Thanks, AussieJohn.

 

I couldn't find it into the install CDROMs, so I downloaded it from the Internet (I selected the monitor-edid-1.5-1mdk.src.rpm file), then I installed it.

 

But the problem is that when I try to change the display, the highest resolution is 800x600.

 

What could be happening?

 

Cheers.

[Aomighty]

For some reason, Mandriva detects your horizontal and vertical sync rates but doesn't realize what resolutions it's capable of. I had this problem recently with Debian and editing the file forced it to listen to sense :).

 

What does it say in your display section under 24-bit color depth right now?

 

Try making it like this just in case:

SubSection "Display"

Depth 24

Modes "1024x768" "800x600" "640x480"

 

Also try adding that at all the color depths (remember backup the file first :). Then reboot the computer and try setting the resolution in KDE or with monitor-edid.

[Gustavo]

Thanks Aomighty, but I'm still getting the "out of range" error message.

 

This is what the xorg.conf file has for the 24-bit color deepth:

    Subsection "Display"
       Depth 24
       Virtual 800 600
   EndSubsection

 

And I've tried to do it in 3 different ways for each 'Subsection "Display"':

I got the error message when I set:
   Subsection "Display"
       Depth Z
       Modes "1024x768" "800x600" "640x480"
   EndSubsection

===================================

Nothing happens when I set:
   Subsection "Display"
       Depth Z
       Virtual 800 600
       Modes "1024x768" "800x600" "640x480"
   EndSubsection

===================================

I got the error message when I set:
   Subsection "Display"
       Depth Z
       Modes "1024x768" "800x600" "640x480"
       Virtual 800 600
   EndSubsection

Where "Z" represents each deepth (8, 15, 16 and 24 in my computer).

 

... What could be happening?

 

Cheers.

[Aomighty]

Hmm... if you rebooted each time afterwards, I don't know what the problem is.

 

Is the "monitor out of range" message from KDE and the GUI or from your monitor itself?

[AussieJohn]

A couple of things bother me here.

You said you downloaded .........monitor-edid-1.5-1mdk.src.rpm.

This is not a straight forward rpm. You should have installed ....monitor-edid-1.5-1mdk.rpm.

There is a big difference in the installing of those two packages. The .src version is a manual install and the various files may not be in the places that 10.1 needs, whereas the straight rpm package will be placed in the default places for 10.1.

After the install of ...monitor-edid-1.5-1mdk.rpm it is necessary to do the other things I said to do in MCC and KdeCC which I see no mention of you having tried.

If you have done things correctly then you should see the Name of your Monitor in the MCC and also in /xorg.conf

Section "Monitor"

Identifier "monitor1"

VendorName "Plug'n Play" (should be name of your monitor)

HorizSync 30-56 (should be of your monitor)

VertRefresh 50-120 (should be of your monitor)

 

 

Earlier today I installed a new 19" (1280 x 1024 -75hz) Samsung lcd/tft monitor in lieu of the 2" crt Mitsubishi Monitor that I had. monitor-edid saw me through with no troubles at all, it should do the same for you as well. But you must do these other things as well.

Cheers. John.