LCD Monitors and Knoppix

**robbief** · 02-09-2003, 10:04 PM

Using Matrox G400 16 MB and Fuitsu Siemens 38B1 at the startup I tried many tips of you( in combination too) and other tips of F2 screen

Then the message is the following
"You passed an undefined mode number. Press RETURN to see mode Vesa mode vailable.. I tried 0 (80x25 ) or 3 (80x2

.
It is ok. The coloured text is good and so I can see many hardware well recognized and among these there is Matrox G400 16 MB AGP using XFree86 server - fbdev)
and a generic monitor voice

Tryng fb102x768 the screen is blinking, trying to start X11..
then I can read in text mode:
trying XFree (vesa)...failed
trying XFree (fbdev) ...failed

and then I return to command prompt

What do you think about this?

thanks
Rob

**yohanman** · 02-09-2003, 05:23 PM

This problem has to de with the differences between CRT-/LCD-monitors.

I think Knoppix tries to check the refreshrate of the monitor, but this works different on an LCD / TFT monitor.
There lies the problem I think...

**teichmann** · 03-24-2004, 02:06 PM

Does somebody have a clue, how to get knoppix running with a sony cpd-m151 tft lcd?

**bob58** · 03-24-2004, 04:28 PM

Hi I gete the same thing on bootup on my COMPAQ presario 1247 laptop. It says the same thing about passing an undefined mode number, and to wait or press space bar to continue, which i always do [press space bar] and it seems to work fine when KDE starts....I did dmesg and looked for any video related errors but found nothing....So I have no idea why it does that but it doesnt seem to be a problem.....i will look into this closer cause i would like it to start with no errors so i dont have to keep hitting the space bar every time! bob

**Sanny** · 03-30-2004, 01:52 AM

hi all!
I have a similair problem with mine. i have a old Hewlitt Packard Pavilion monitor. and i also get the you have passed a undefined number to press return for video modes or press space bar to continue. everything seems to load ok and everythings detected. even my monitor but it detects it as a generic monitor. but anyway. it loads but when it gets to where your GUI is sposed to load, all i get is a flicker and then nothing but a black screen. I tried different video modes, tried the xmodule options. even tried telling it to run kde thinking it might be a compatability issue with one of the gui programs. but no such luck. my graphics card is a intel(r) 82810 graphics controller. when i had mandrake linux on my system i had no troubles running. don't have it now. i just have windows xp. I have 128 mb ram. hope this info helps. was hoping some one could help me. thankssss[/b]

**garyng** · 03-30-2004, 06:39 PM

If you have problem starting up X, check /etc/X11/XF86Config-4 and remove those modline entries and try again(startx at the command line), especially for LCD monitors.