Re: Screen resultion on i865G

From: Chris Boot (chris.boot_at_oracle.com)
Date: 04/05/05

  • Next message: Adam Funk: "Re: logcheck not working after apt-get upgrade" 
    Date: Tue, 05 Apr 2005 09:31:16 +0100
To: debian-user@lists.debian.org

    Chris Boot wrote:

    > Helge Tore Høyland wrote:
    >
    >> Måndag 4. april 2005 16:10 skreiv Chris Boot:
    >>
    >>
    >>> Hi all,
    >>>
    >>> I've installed Sarge on a Dell Optiplex GX270 at work, and
    >>> everything is
    >>> running great except I can't get a decent refresh rate in X. In windows
    >>> I could set the resolution to 1152x867 (or something like that) with a
    >>> 76Hz refresh rate which was kind on my eyes and gave me a decent amount
    >>> of screen real-estate, but I can't seem to do this under X at all (nor
    >>> even get past 60Hz at 1024x768).
    >>>
    >>> I'm using the i810 driver with agpgart and dri. I've tried with
    >>> ModeLines as detected by Knoppix (which also fails to work at a decent
    >>> res) and without (leaving X to auto-detect) without any difference. The
    >>> only thing in my XFree86.0.log that sheds any light is the lines:
    >>>
    >>> (II) I810(0): Monitor EDID v2 checksum failed
    >>> (II) I810(0): XFree86_DDC_EDID2_RAWDATA property may be bad
    >>>
    >>> lspci lists my graphics card as:
    >>> 0000:00:02.0 VGA compatible controller: Intel Corp. 82865G Integrated
    >>> Graphics Device (rev 02)
    >>>
    >>> My monitor is a Sun CM751U (or SUN0564 from DDC).
    >>>
    >>> Does anyone have any ideas? I'll provide my complete XFree86.0.log or
    >>> whatever if need be.
    >>>
    >>> Many thanks,
    >>> Chris
    >>>
    >>> Below is my XF86Config-4:
    >>>
    [snip]

    >>>
    >>> --
    >>> Chris Boot
    >>> bootc@bootc.net
    >>> http://www.bootc.net/
    >>>
    >>
    >>
    >> This might be a soloution to your trouble.
    >>
    >> Take a look at your XF86Conf-4, at the section "Screen". You have got
    >> the depths listed but you seems to not having the "modes" listed for
    >> the proeriate depths.
    >>
    >> It sould look somthing like this:(the section in my XF86Conf-4)
    >> "
    >
    [snip]

    >> "
    >>
    >> Swap my GeForce with your Generic Video Card and my ___:ffff with
    >> your Generic Screen.
    >>
    >> Beware! If your screen was autodetected, as it looks like, you have
    >> got a low HorizSync and VertRefresh rate. I am a bit unsure, but my
    >> screen is 30-70(HS) and 50-120(VR) and I am not alowed to have more
    >> than 1280x1024 at 60Hz, neither in linux or windows. It looks like
    >> your Windows has gone a bit far if you have had 1152x867 at 76 Hz.
    >> Try 1024x768 at 72Hz(or a bit more).
    >> 72 Hz is the lower limit for your eye to registrating flickering.
    >> Everything above will look "solid".
    >>
    >> Helge Tore Høyland
    >>
    >>
    > Hi Helge,
    >
    > I *had* added the Modes lines before, but I took them out in case it
    > wasn't exactly 1152x864. With them out the graphics settings can go
    > all they way up to 1600x1200@60Hz, but that's positively tiny! ;-)
    >
    > I tried fiddling with the VertRefresh / HorizSync and extended them to
    > values I found by searching google for my monitor, especially since I
    > found the following in my log:
    > (WW) I810(0): Generic Monitor: Using default hsync range of
    > 28.00-33.00kHz
    > (WW) I810(0): Generic Monitor: using default vrefresh range of
    > 43.00-72.00Hz
    >
    > I added these values:
    > HorizSync 30.00-92.00
    > VertRefresh 40.00-130.00
    >
    > I thought we were onto something but still no luck. Depite being
    > properly detected (see log snippets below), they don't work.

    [snip]

    >
    > At least now it seems I get a decent refresh rate (85Hz) at 1280x1024,
    > which will do me just fine, but I don't actually know until I get to
    > work tomorrow and have a real look. Would be nice to have 1152x864
    > though, since it's not too small...
    >
    > Many thanks,
    > Chris
    >
    Yup, it's now running at 1280x1024 at 86Hz, so that's fine by me! I
    didn't even think the graphics chip could do that, but it's really nice.

    Thanks for all the help!
    Chris 

    -- 
Chris Boot
Industrial Placement Student
Honorary Linux & Web Guru
Email + OIM: chris.boot@oracle.com
AIM: bootc622
Phone: +44 118 92 45324
http://www.bootc.net/
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