F14 New Installation: Unknown Monitor

[Burkhard Plache]

Hi Kevin,
learning a bit more than I bargained for when I thought
all I had ahead of me was a simple upgrade ;)

On Fri, Feb 4, 2011 at 1:26 AM, Kevin J. Cummings
<cummings at kjchome.homeip.net> wrote:
> On 02/03/2011 09:09 PM, Burkhard Plache wrote:
>
>> Ok, here again:
>>
>> lspci | grep VGA
>>
>> 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS]
>> 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter
>>
>> And attached the Xorg.0.log file after I renamed xorg.conf and rebooted.
>>
>> Hope this allows you to see the origin of the problem,
>> and many thanks for taking time & effort.
>> Burkhard
>
> Burkhard,
>        Here is what I noticed:
>
> 1) The Xorg log file shows that there is no Monitor definition.
>
>> [    45.590] (==) No Layout section.  Using the first Screen section.
>> [    45.590] (==) No screen section available. Using defaults.
>> [    45.590] (**) |-->Screen "Default Screen Section" (0)
>> [    45.590] (**) |   |-->Monitor "<default monitor>"
>> [    45.591] (==) No monitor specified for screen "Default Screen Section".
>>       Using a default monitor configuration.
>
> 2) You *are* getting the SIS driver loaded.
>
>> [    45.672] (II) SIS: driver for SiS chipsets: SIS5597/5598, SIS530/620,
>>       SIS6326/AGP/DVD, SIS300/305, SIS630/730, SIS540, SIS315, SIS315H,
>>       SIS315PRO/E, SIS550, SIS650/M650/651/740, SIS330(Xabre),
>>       SIS660/[M]661[F|M]X/[M]670/[M]741[GX]/[M]760[GX]/[M]761[GX]/[M]770[GX],
>>       SIS340
>> [    45.674] (II) SIS: driver for XGI chipsets: Volari Z7 (XG20),
>>       Volari V3XT/V5/V8/Duo (XG40)
>
>> [    45.697] (--) Chipset SIS660/[M]661[F|M]X/[M]670/[M]741[GX]/[M]760[GX]/[M]761[GX]/[M]770[GX] found
>
>> [    45.879] (II) SIS(0): SiS driver (2005/09/20-1, compiled for X.org 1.8.99.904)
>> [    45.879] (II) SIS(0): Copyright (C) 2001-2005 Thomas Winischhofer <thomas at winischhofer.net> and others
>> [    45.879] (II) SIS(0): *** See http://www.winischhofer.eu/linuxsisvga.shtml
>> [    45.879] (II) SIS(0): *** for documentation and updates.
>
> I tried going to the URL listed above.  It is for sale.  Does Fedora
> know this????   Hmmm, a quick google shows that the site has moved to
> www.winischhofer.net.  Perhaps a quick update request should be filed
> for the driver so it reflects the correct URLs.
>
> Lots of good information on that site, including a section on
> troubleshooting problems.  I don't know if you've been there or not, or
> if its even up-to-date (the driver seems to be dated 2005) enough to be
> useful, but it might be worth looking it over.

Yes, the site appears to lack recent updates.

>
> 3) The combination of the SIS driver and the default monitor ends up
> throwing away most of your higher resolution modes leaving you with
> 960x600 or less for your resolution.
>
>> [    48.231] (II) SIS(0): Replaced entire mode list with built-in modes
>> [...]
>
>
> This appears to be where your problem lies, though I'm not sure what's
> different here, other than there is *NO* mention of EDID anywhere in
> your log file.  Does the SiS driver not support EDID?  If that is the
> case, you may wish to create a file for your Monitor that specifies the
> the correct limits of your monitors hsync, vrefresh, and max pixel clock
> and put it in your /etc/X11/xorg.conf.d directory.
>
> Something like:
>
>> Section "Monitor"
>>       Identifier   "Monitor0"
>>       VendorName   "Monitor Vendor"
>>       ModelName    "LCD Panel 1280x800"
>>       HorizSync    31.5 - 90.0
>>       VertRefresh  60.0 - 60.0
>>       Option      "dpms"
>> EndSection
>
> That section above is from my laptop, change the values to match your
> monitor.  If you specify the correct HorizSync and VertRefresh for your
> monitor, maybe the SIS driver won't through away the modes you are
> looking for....

I found a spec sheet for the monitor:
http://reviews.cnet.com/lcd-monitors/benq-fp757-v2-lcd/1707-3174_7-31289379.html

Will try the following tomorrow:

Section "Monitor"
        Identifier   "Monitor0"
        VendorName   "BenQ FS757"
        ModelName    "LCD Panel 1280x1024"
        HorizSync    83
        VertRefresh  76
        Option      "DPMS"
EndSection

Section "Screen"
        Identifier "Screen0"
        Device     "Card0"
        Monitor    "Monitor0"
        DefaultDepth 24
        SubSection "Display"
                Viewport 0 0
                Depth    24
                Modes    "1280x1024"
        EndSubSection
EndSection

Thanks again,
Burkhard