can't get my fedora8 to output to the video projection system

nkd · 10-03-2008, 12:17 PM

I am using acer 4720 with fedora8.
I can't get the output on a video projection system.
So I have no way to do presentations.
Can someone suggest something to get it working ?
regards
nishith

David1357 · 10-03-2008, 02:25 PM

Quote:

Originally Posted by nkd

I am using acer 4720 with fedora8.
I can't get the output on a video projection system.
Can someone suggest something to get it working ?

Does your keyboard have a key named "Fn" (or similar) and a key with a picture of a monitor near the top (usually in the same color as the text on the "Fn" key)? If so, just press the "Fn" and then the "monitor" key, and the output should magically go to the external VGA port.

Press "Fn" and the "monitor" key again to get output to only go to the VGA port. Finally, press "Fn" and the "monitor" key again to restore the video to the laptop display only.

nkd · 10-05-2008, 11:40 AM

thanks
tried your suggestion the function key (blue in color) + all the blue keys didnot work
could you suggest something else ?
thanks
nishith

michaelk · 10-05-2008, 05:55 PM

Fn + F5 is supposed to toggle monitors. Your most likely problem is the projector's resolution are not the same as the LCD and therefore will not automatically work when you simply use the toggle function.

I did find a decent article:
http://www.astro.umd.edu/~teuben/lin...p-display.html

nkd · 10-17-2008, 05:45 AM

Firstly, sorry for the dealyed post .....
It is indeed the problem of the resolution..thanks for the link.
Well the problem in my case is I donot know much about the gui login process. I guess gdm is doing the login for me. So do I see the /etc/X11/xorg.conf file at all for the details of the resolution supported or do I see some other file in /etc/gdm ????

Anyway I am placing the xorg.conf file for any help......

Quote:

# Xorg configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us+inet"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "radeon"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

As you can see there are no monitor sections in it.......
also how to detect the resolution of your screen ?
thanks again
nishith

David1357 · 10-17-2008, 07:49 AM

Quote:

Originally Posted by nkd

Code:

Depth 24

You really need a "Modes" line after the "Depth" line, e.g.

Code:

        SubSection "Display"
                Depth           24
                Modes           "1280x1024" "1024x768" "800x600" "640x480"
        EndSubSection

I you only want to support one mode, just put one mode on the line.

nkd · 11-01-2008, 06:41 AM

I have been able to finally solve the problem partially using the following scheme of things:-
(a) I start the video projection system (VPS) first and connect it to the laptop before booting up linux.
(b) then I use the following command to change the resolution of the VGA mode (leaving the laptop display resolution intact) :-
xrandr –output VGA –mode 1024×768 –rate 60

Now the video display works fine and also the gnome panels on the laptop screen adjusts themselve to the boundaries of the 1024x768 screen. So in effect I now have two screens on the laptop one the original high resolution and the other one is the 1024x768 one. I can drag panels from the smaller screen to the larger one.

But there is one small problem, if I start a open office presentation and start the slide show the show is not contained within the smaller screen, it spills over to the full screen and hence on the VPS I see a slide show which is cut from the right side.... that is very ugly and not acceptable.

Can someone suggest me something else...
thanks
nishith