On Thu, Mar 06, 2003 at 08:02:38PM -0500, Jesse Burkhardt wrote:
> OK, I have made some progess. I went to the Intel site and downloaded
> the appropriate driver RPM for the 82815 CGC:
>
> xfcom_i810-1.2-3.i386.rpm
>
> This took care of modes greater than "1024x768". However, I am still
> suffering from a horrible screen squiggle. Any ideas about these
> setting to effect relief?
>
> HorizSync 30.0 - 115.0
> VertRefresh 50.0 - 160.0
>
You keep looking in a wrong direction. I had _exactly_ the same problem
until I set the DacSpeed. Try
grep -i 'clock range' /var/log/XFree86.0.log
For your color depth (24 bit) you'll see something like 136 MHz, which
is right for i810, but wrong for i815, and which makes your system
operate at a very low refresh rate, therefore screen squiggle.
Do add the following line to the "Device" section of your XF86Config
DacSpeed 230
and most likely it'll work. You don't event risk to break your monitor
if HorizSync and VertRefresh limits are right (besides, ViewSonics have
builtin protection from overclocking, IIRC).
That's no black magic, it is meant to work this way.
BTW are you so tight on memory that you limit your VideoRAM to 4 MB?
That should suffice for your depth*resolution, but 8 MB would leave more
room for acceleration.
Roman.
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