dpkg-reconfigure not working..

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We appreciate the difficulties you are facing, but it would make more sense to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs.

Try running the following command

sudo apt-get install --reinstall debconf

Then enter your password (don't worry you won't get any visual feedback)

Then try the command you listed above again, (however I recommend the command below to reconfigure your screen res, as the one below is automatic, whereas the one above is for more experienced users)

sudo dpkg-reconfigure -phigh xserver-xorg

If this does not work, please run the following command

echo $PATH

And paste the output of that here (you may have to write it down) .

Is that monitor Samsung Syncmaster?

The first command you gave me returns:

/bin/sh: sudo: not found

again.

Here is $PATH:

/usr/local/bin:/usr/bin:/sbin:/bin

Try then:

apt-get install --reinstall debconf

same reaction,

/bin/sh: apt-get: not found

let me tell you some extra details.
When I open my computer, press ESC and run it in recovery mode, it writes a few things, some lines running fast infront of me, then a long row of the same command: something something something something not found, and then:

<initramfs> *blinking pipe, you know, here I write down the commands*

do the /bin/sh: apt-get: not found and the extra information help in a way?

what about

/usr/bin/dpkg-reconfigure -phigh xserver-xorg

OK, new developements.

until now, I pressed ESC while initiating and chose Ubuntu 8.04.1, kernel 2.6.24-16-generic (recovery mode), or Ubuntu 8.04.1, kernel 2.6.24-19-generic (recovery mode). There I either drop to root-*myusername*@Linux or something like that, or to (initramfs), it's quite random!
If I didn't choose the recovery mode, my screen would just go black and send me an "out of range' error.

I try the commands you give me in both of them, the root accept what I write, but then just prints alot of things I can't understand, but basicly says it didn't work, and (initramfs) keeps on saying /bin/sh: something: not found.

This time, I don't know how, it was before I could enter the new command you gave me, when i go to recovery mode, it brings me (after a few minutes and alot of lines) to the visual screen, where I enter my username and password like good old times, but after I enter them, the screen just becomes tan (that's my background color, I guess) and the mouse cursor stays stuck in the middle of the screen. when I choose the regular mode, not recovery, it quickly brings me to (initramfs). There I enter the new command you just gave me, and still the answer is:

/bin/sh: /usr/bin/dpkg-reconfigure: not found

Sorry, I can't seem to work out the problem.

Is reinstalling Ubuntu an option for you?

I have the disk, but I'm not sure I can do it by my own...

3 questions:
* Is it hard?
* Do I have a chance to back-up my files?
* Would it solve the problem for sure, and make it disappear forever?

1) No not really
2) Of Course
3) Most Probably

If you wish to reinstall Ubuntu, please reply and then I can give you a step by step guide on how to.

ok, thank you very much!

I would love to have this guide.
also, I need a guide to all the programs you can use on linux, aspecially the windows shell, I use some of the programs that work on windows for graphic designing.

If you haven't yet tried that, try:
/usr/sbin/dpkg-reconfigure -phigh xserver-xorg

I just checked, and dpkg-reconfigure is in /usr/sbin, not /usr/bin...

It's always the little things.