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Old 11-12-2005, 03:15 PM   #1
rhyan-brw
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Lightbulb TFT won't start on 1600 x 1200 SUSE 10.0


Guys,

It is the first time I decided to go and try Linux, as I really got tired of MS WIN., however I got stuck right in the begginning so I need help.

The matter is the following: I have just set up a SuSe 10.0 distribution and during setup I have adjusted my screen res to 1600x1200px. and selected monitor type SAMSUNG 213T.

I know the TFT supports the 1600x1200 res as I currently use it with my Windows OS.

Now when I restart the Suse Linux everything is OK during loading until the desctop and login screen has to show up. It is just then when the monitor goes in stand-by mode as if the frequency is not supported.

Please advise how and what should I do in the recovery console to restore the resolution to a lower level, as I do not have any idea of the Linux commands and how the settings get adjusted by a console screen. I just know that it can be done.

Please type the exact syntax if you know how it gets done.

Appreciating your help in advance.
 
Old 11-12-2005, 03:52 PM   #2
Xena
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A quick tip: you can use xrdb to alter setttings in X windows from the command line. Try a brief yahoo search on xrdb; I'm sure you'll find something or try reading the manual page (man xrdb I think), you should be able to find a resolution and refresh rate that your monitor is happy with.

Good luck.
 
Old 11-12-2005, 05:05 PM   #3
rhyan-brw
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Guess I am too new to the linux, however I can't figure out how this xrdb works.

I got a help page and I see that the xrdb can modify the x_res and the y_res, however i cannot deal with the syntax.

Is there anyone that can type exactly what is the syntax to reconfigure screen resolution back to 1024*768px?

Will greatly appreciate your help, as I don't want to quit on linux at the very beginning.
 
Old 11-12-2005, 05:26 PM   #4
jib2
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Did you check your /etc/X11/xorg.conf ?

In Section "Monitor" should be the values
HorizSync 30-93
VertRefresh 56-75

(check your doc for the proper values)

Also, check Section "Screen" for the resolution.
 
Old 11-12-2005, 05:48 PM   #5
rhyan-brw
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O.K.,

I think I got a little bit ahead As I told you I am a complete linux dummie, I got reading this and that way along the forum and found out this one: http://www.linuxquestions.org/questi...hreadid=374083
however I do not seem to be able to find xorg.conf file
When I type cd /etc/x11/ the system returns invalid file or folder. Advise if linux is case sensitive and if the x11 is capitalized.

Also i tried to run sax2, however after doing some calculations, etc, I get the blank screen again and monitor goes off in stand by.

Can you advise on the above?
 
Old 11-12-2005, 05:54 PM   #6
Master_Simon
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Oh Marvelous

I would have hoped this chesnut would have been ironed out, how many people have been caught out due to this?
Bit sad really, maybe the nVidia driver is the faulty item?

Rgds
Simon
 
Old 11-12-2005, 06:13 PM   #7
chrisortiz
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from what he is sayin, it sounds like a refresh rate issue.


type: cd /etc/X11
then: ls
you should see a file called xorg.conf
edit it and look for a section called "Monitor"
you should see a
Code:
        Identifier   "Monitor0"
                    VendorName   "Monitor Vendor"
                    ModelName    "Monitor Model"
                    HorizSync    50-96
                    VertRefresh  28-96
i used knoppix to find my HorizSync and VertRefresh.
btw if you don't have a HorizSyc or a VertRefresh setting it means x is trying to detect it every time it loads.
 
Old 11-12-2005, 06:22 PM   #8
rhyan-brw
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Chrisortiz,

Thank you for help - just rebooted form linux back to win to look into the forum. Now, I am running SUSE 10.0. When I type "cd /etc/X11" or "cd /etc/X11/" I get the message "No folder or file". I have tried typing x11 with capitalized and with normal x and it just does not seem to be there.

The ls comand in /etc/ directory lists a whole lot of files and folders but no x11 forlder or file is listed there. I did not get any error messages during setup, so i think everything is OK with the setup.

As far as the sax2 - still can't figure out how to run it - it fails in short while after execution.
 
Old 11-12-2005, 06:35 PM   #9
chrisortiz
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which implimentation of X are you using, there is another one called Xfree86.

try running xorgsetup

if you get nothing, then you are using Xfree86 and all the config files in are that directory
 
Old 11-12-2005, 07:09 PM   #10
Xena
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Maybe you need to be logged in as root to access /etc/X11? The file you're looking for is probably XF86Config or XF86Config-4 beware capitals are important!

This link *might* help you out: http://lyre.mit.edu/cgi-bin/dwww?typ...ocation=xrdb/1

And if not, could you post more details on what errors you're getting.
 
Old 11-12-2005, 07:11 PM   #11
rhyan-brw
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Chrisortiz,

Managed to reach the xorg.conf at the end. This is what it says:

Sections Monitor
Horz.Sync. 30-81
Identif. Monitor [0]
Model Syncmaster
Option DPMS
Vendor Samsung
Vert.Ref. 56-75
Usemodes Modes [0]

Now is there something missing that I have to add, or what have I to change?

Made a backup of the file, deleted it and tried to run SAX2 again but same result - monitor went into stand by.

Restored the file and I am wondering what to do.

Please help
 
Old 11-12-2005, 07:38 PM   #12
chrisortiz
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you need to change the HorizSync and the VertRefresh to your monitor specs. There are several ways you can do this, the most recamended being.

Look at manufacturer of your monitors website. (i've always had bad luck at this one)
Use a live distro like knoppix to detect then (the refresh rates will pop up during startup, only use them knoppix successfully loads into the GUI)
Read your windows inf file. If you had to install a driver for your monitor, open it up with a text editor.

or, just google your monitor model number along with HorzSync, eg. (Hansol 500a HorizSync)


whatever values you come up with, write down and try them out.
 
Old 12-20-2005, 11:15 AM   #13
rhyan-brw
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Guys,

I knew Linux has Plug N Play issues, however did not know they are that big. What do you think the problem was? I have forgotten the s-video tv out cable plugged in into the video card. Obvioursly the driver tries to make both the DVI and s-video work on the same refresh rate and resolution. So if you try to set up the flat panel to work on its correct values it acts as a simple tv display and fails to start as all settings go above safe limits.

So what I did I just pulled the s-vhs plug out of the video out and everything went O.K. I haven't tried putting it back in, however I prefer the system running more stable rather than not working at all.

So my advise once again is to check if by mistake you did not forget your tv out cable plugged in before installing a linux distro.
 
  


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