black bars on monitor, refresh issues - Hardware

This is a discussion on black bars on monitor, refresh issues - Hardware ; Hi, I've got a hw191d hanns-g monitor connected by vga to my laptop. I have an intel embedded graphics (i810 driver). On the highest resolution (1440 x 900), no matter what I set horizontal and vertical refresh in my xorg.conf, ...

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Thread: black bars on monitor, refresh issues

  1. black bars on monitor, refresh issues

    Hi,

    I've got a hw191d hanns-g monitor connected by vga to my laptop. I
    have an intel embedded graphics (i810 driver).

    On the highest resolution (1440 x 900), no matter what I set
    horizontal and vertical refresh in my xorg.conf, it is always stuck at
    (according to my monitor) H:51.3khz V:53.5hz. Xrandr incorrectly
    reports a refresh rate of 60.

    Additonally, black bars are present on the side of the monitor (where
    the desktop real estate doesn't stretch to cover). I can change the
    clock and phase to cover more of it, but never all of it.

    On windows, and according to the manual for my monitor it supports H:
    70.635 khz and V: 75 hz.

    Has anyone else had problems with this monitor or this driver? I'd
    like to be able to use all of my screen real estate on linux...

    Thanks,
    Brendan


  2. Re: black bars on monitor, refresh issues

    catphive writes:

    > Hi,
    >
    > I've got a hw191d hanns-g monitor connected by vga to my laptop. I
    > have an intel embedded graphics (i810 driver).
    >
    > On the highest resolution (1440 x 900), no matter what I set
    > horizontal and vertical refresh in my xorg.conf, it is always stuck at
    > (according to my monitor) H:51.3khz V:53.5hz. Xrandr incorrectly
    > reports a refresh rate of 60.
    >
    > Additonally, black bars are present on the side of the monitor (where
    > the desktop real estate doesn't stretch to cover). I can change the
    > clock and phase to cover more of it, but never all of it.
    >
    > On windows, and according to the manual for my monitor it supports H:
    > 70.635 khz and V: 75 hz.
    >
    > Has anyone else had problems with this monitor or this driver? I'd
    > like to be able to use all of my screen real estate on linux...


    Add these lines to the Monitor section of your xorg.conf:

    HorizSync 30-71
    VertRefresh 50-75

    Delete/comment any ModeLine entries you might have and see if X picks
    a good mode. If it doesn't, try adding a reasonable mode line.
    Something like this might work:

    ModeLine "1440x900" 110 1440 1520 1560 1600 900 908 912 920

    That should give you 1440x900 at 74.7 Hz vertical and 68.75 kHz
    horizontal rate. The exact numbers might need some tweaking to suit
    your monitor, for which xvidtune is handy.

    --
    Måns Rullgård
    mans@mansr.com

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