Re: Acer AL2216W under Linux ?

Henrik Carlqvist <Henrik.Carlqvist@xxxxxxxxxxxx> writes:
anton@xxxxxxxxxxxxxxxxxxxxxxxxxx (Anton Ertl) wrote:
a Matrox G450 is limited to 1280x1024 on DVI with standard modes.

I have a vauge memory of that even though this limitation is specified by
Matrox themselves the limitation is not in hardware but in the Windows
drivers only.

It is in the hardware. We drove it with X with a standard 1600x1200
mode, producing a proper picture through VGA, but got only "no signal"
or somesuch when we connected the monitor through DVI. 1280x1024
worked fine even through DVI. This thouroughly confused us, as we had
no idea that there would be such a limitation. Eventually we looked
in the manual and found somewhere pretty well hidden that DVI is
limited to 1280x1024. I theorized that this is due to limited
bandwidth, and constructed a 1600x1200@52Hz mode that used the same
bandwidth as a standard 1280x1024@60Hz mode, and got it to work with
the monitor in this way.

Another disadvantage of the G450 was that it needed a proprietary
driver to achieve such resolutions, the free X driver was only good
for lower resolutions (this may have changed with newer X versions).

We had much better experience with the Radeon 7000 (proper support for
1600x1200 and 1920x1200 on DVI, with standard modes, with free
drivers, in the same old X version), and it's cheaper as well. No
reason to buy the G450.

For details on these issues, read
<http://www.complang.tuwien.ac.at/anton/igel2.html>

- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@xxxxxxxxxxxxxxxxxxxxxxxxxx Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html
.

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