LCD screen rotation [Solved]

[dixonpete]

I'm looking to rotate my LCD so I can better read pdfs.

Under Display - Control Center however the Orientation options are grayed out. Does that mean my video card doesn't support this? I'm using PCLOS 2009 KDE 3.5 updated, and the video card is a GeForce 8400 GS.  The Nvidia driver is version 180.22. The LCD is from IBM, resolution is currently at 1280 by 1024. The LCD has a nice stand/pivot that would make it ideal for e-book reading.

I asked previously about dual screens, this is just an attempt using a single monitor.

[7272andy]

Try going from the PC button System > Configuration > Hardware > KRandRTray then right click on the blue icon with the double headed arrow in the system tray.
You should find the options you need in the list presented.

Regards
Andy

[dixonpete]

Pretty neat app, but I still end up at the same grayed out orientation options.

[7272andy]

I've had a look around and it appears that nvidia have disabled the option to rotate the screen for performance reasons; so the answer seems to be to use xrandr.

as root start an editor and edit /etc/X11/xorg.conf

Now look for the device section (which should have the name of your graphics card), and add an option at the end (highlighted in bold)

    Section "Device"
    Identifier "Device0"
    Driver "nvidia"
    VendorName "NVIDIA Corporation"
    BoardName "GeForce 8800 GTS"
    Option "RandRRotation" "true"
    EndSection

Save the file, log out and restart the xserver.

Login and now you can rotate the screen using the xrandr command from a terminal (x rotate & resize) such as:

    xrandr -o left
or
    xrandr -o right

To restore the rotation use

    xrandr -o normal

[dixonpete]

Thanks for this. I've literally been looking forward for years to be able to read my pdf collection in single page view. Now I can.

[7272andy]

No problem, glad I could help. Don't forget to mark the topic solved on the first post