[SOLVED] Issues using external monitor with Laptop

[rinjo]

Hi All,

I am using a HP laptop with a dual boot configuration.
I recently got an external monitor, since I my laptop display has developed some issues.

In my Windows XP installation, I can switch between the laptops display and the external monitor using the Fn+F4 key, and there are no issues with it.

I run into resolution issues when I switch onto my Linux installation. I am running F10 with 2.6.27.41-170.2.117.fc10.i686 kernel and Gnome 2.24.3.
F10 is able to detect the external monitor.
I am still having my laptop display as the primary display, and I do not get anything on the external monitor during F10 boot. I directly get the login screen.

Issues that I am facing:

1. F10 is using a default resolution of 1024x768 for the external display, but the actual resolution for the display is 1360x768.
In F10 xorg.conf is not used. I googled for this issue and yum installed xorg.conf and then modified the same, but to no use. The display still shows the lower resolution.

I am attaching copy of my xorg.conf. Please help me sort this issue.

# Xorg configuration created by system-config-display

Section "ServerLayout"
        Identifier     "single head configuration"
        Screen      0  "Screen0" 0 0
        InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"

# keyboard added by rhpxl
        Identifier  "Keyboard0"
        Driver      "kbd"
        Option      "XkbModel" "pc105+inet"
        Option      "XkbLayout" "us"
EndSection

Section "Monitor"
        Identifier   "Monitor0"
        ModelName    "LCD Panel 1360x768"
        HorizSync    31.5 - 48.0
        VertRefresh  56.0 - 65.0
        Option      "dpms"
EndSection

Section "Device"
        Identifier  "Videocard0"
        Driver      "intel"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Videocard0"
        Monitor    "Monitor0"
        DefaultDepth     24
        SubSection "Display"
                Viewport   0 0
                Depth     24
                Modes    "1360x768"
        EndSubSection
EndSection

2. I want to use the external monitor as the only display. Present, both the external display and my laptop display are ON at the same time.

Any help in this regards is high appreciated.

Thanks in advance.

[rinjo]

Hi All,

Please help me out with this. It is really weird to work with wrong display resolution.

One more thing that I noticed today is that I cannot change to the terminals using ctrl+alt+f2...f7.
The display disappears from the external monitor and is only available on the laptop display.

Plz help!!!

[rinjo]

Can anyone please help me out here?

[rinjo]

This issue is now sorted out!
We can change the display resolution of the external monitor using "xrandr" commands.

$ xrandr --output VGA-0 --mode 1360x768

We can even shut the output to the required display by running the following command.

$ xrandr --output VGA/LVDS --off

I did get some help from someone else and I hope that this will help others looking for solution to similar issues.

Cheers
-Rinjo

[MikeTbob]

Thanks for posting your solution, I'm sure it will help someone.