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xrandr option available?

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  • xrandr option available?

    I use Ubuntu 12.04 with the radeon driver on a laptop. I also use an external monitor, an Acer X233H, and have the laptop's screen turned off usually. Until a few days ago, all worked well. Then, after (and I'm guessing because of) some software updates, the external monitor stopped working properly.

    I get an image on my external monitor, but it's not properly centred on the screen. There are thin black spaces around the top and sides of the image, while the bottom of the image is cut off.

    Here's what xrandr says:

    Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
    VGA-0 connected 1600x900+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
    1600x900 60.0*+
    1024x768 60.0
    800x600 60.3 56.2
    848x480 60.0
    640x480 59.9
    LVDS connected 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
    1600x900 60.1*+
    1440x900 59.9
    1280x854 59.9
    1280x800 59.8
    1280x720 59.9
    1152x768 59.8
    1024x768 59.9
    800x600 59.9
    848x480 59.7
    720x480 59.7
    640x480 59.4

    (As you can see, right now I have both screens turned on.)

    The monitor has a button that's supposed to allow one to change the image's vertical position, but using it hasn't solved my main problem. It moves the image only very slightly.

    Is there some way I can use xrandr to move the image up, so I can see all of it?

    Thank you,