On Wed, 12 Mar 2003, Jos Hulzink wrote:
> Hi,
>
> With both my G200 and G400, the DDC2 (I2C) driver doesn't find the monitor
> attached. The monitor info returned is (nil). Used monitors are Iiyama
> 4332 and Philips 150 B3, both DDC2 capable TFT screens. Now I must really
> hack the config file to prevent Xfree from entering a mode with too high
> vsync speed.
>
> The code is known to work for the Radeon driver, so I assume the bug is in
> the Matrox driver. I have been playing around a little with it, but no
> result. What I can understand from the docs, the code is right. I tested
> with LEDs on the SDA and SCL lines whether the bits used in the driver are
> really the SDA and SCL lines, this looks ok. I was unable to test whether
> the I2C "high" is really tristated when it should be, for instance at the
> moment the DDC-rom should ACK on address 0xA0. This is the last issue I
> can think of.
>
> XFree 4.2 & 4.3 (both Mandrake 9.0 RPMs) on Intel Pentium II SMP and PIII
> UP
Have you tried using the VBE DDC code in XFree86 4.3 ?
This should be tried automatically if the I2C and DDC1 versions
fail, or you can stop them being tried with
Option "noDDC1"
Option "noDDC2"
If you get stuck can you send me the config and log files -
or better put them on a web page and send the URLs ?
(I dislike these files sent as mime attechments of type binary).
--
Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge
[EMAIL PROTECTED] http://www.dpmms.cam.ac.uk/~werdna
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