Re: FC4 + SyncMaster 171S + intel 815 card problems

From: Aad Rijnberg (Aad.Rijnberg_at_zonnet.nl)
Date: 06/30/05

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    To: Fedora List <fedora-list@redhat.com>
Date: Thu, 30 Jun 2005 21:43:09 +0200

    > > > I've just replaced my monitor to a SyncMaster 171S LCD one and upgraded
    > > > my box to FC4.
    > > > Although it is properly detected it does not work well. If I am to use
    > > > the 1280x1024 resolution, which is the standard for this monitor, I have
    > > > the picture fiting perfectly but I also have vertical lines as it seems
    > > > the frequency is not ok. Well, the monitor is 1280x1024 at 60Hz with
    > > > horizontal frequency of 30-81 KHz and Vertical frequency of 56~76 Hz.
    > > > I've tried to mess with X config file as well but I still have the same
    > > > problem. If I try a better resolution say 1400x1050 the lines are no
    > > > longer there but the monitor image does not fit the screen verticaly and
    > > > there is no way on this monitor to change the vertical size, only the
    > > > horizontal.
    > > > I have another computer, a Presario 6000, with the same SyncMaster 171S
    > > > monitor and a S3 ProSavage KM133 chip. It works perfectly with 1280x1024
    > > > and the setup FC4 automaticaly chosen for it.
    > > >
    > > > What shall I do with the i815 video card machine? Any ideas other than
    > > > putting another card?
    > > >
    > >
    > > I had a similar experience. I solved the problem by
    > > editing /etc/X11/xorg.conf. In the section "Screen" you can define:
    > > DefaultDepth 16
    > > SubSection "Display"
    > > Viewport 0 0
    > > Depth 16
    > > Modes "1280x1024" "1280x960" "1152x864" "1024x768"
    > > "800x600" "640x480"
    > > EndSubSection
    > >
    > > Remark: the Modes-line should be on one line!
    > >
    > > Hope this solves your problem.
    > >
    > > Cheers,
    > > Aad
    > >
    > >
    On Wed, 2005-06-29 at 13:59 -0600, C.F. Scheidecker Antunes wrote:
    > Aad,
    >
    > Thanks a bunch!
    > I appreciate that!
    > However I have 24 bits of depth, using 16 bits I will have less color
    > resolution, right? I will give it a try!
    > cheers,
    > C.F.

    Yes, you will have less color resolution, but 16 bit is not too bad for
    a desktop... If that is not good enough for you, then you could try to
    reduce the vertical refresh rate of the monitor to 60 Hz
    in /etc/X11/xorg.conf (if you did not already do that). In Section
    "Monitor" you have to add (or change) the line:
            VertRefresh 60.0 - 60.0

    Success.

    Aad 

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