Samsung SyncMaster 720N working only @60Hz

Eugene roginovicci at
Wed Apr 9 12:09:25 PDT 2008

On Wednesday 09 April 2008 22:32:24 Thomas Ilnseher wrote:
> Am Mittwoch, den 09.04.2008, 14:30 +0100 schrieb Bill Crawford:
> > Plus of course you mean DACs, if the panel is digitally connected ;o)
> errmm .. no. I meant ADCs, if the panel is analog connected. the TFT
> itself is digitally connected (to the electronics inside the monitor)
> anyway, so if you connect it per VGA output, you have to convert the
> signal back to digital, therefore you need ADCs (AD converters).
> Anyway I checked the datasheets of that monitor, and according to teh
> datasheet, it should be able to do the vesa mode you specified in your
> original post.
> So my answer was actually crap. After some further investigation i found
> out that my digitally connected monitor can't do more than 60Hz, do to a
> pixel limit of 165MHz imposed by the hdmi standard.
> I apologize.

Is it possible to change the resolution and fresh rate with xrand software. I 
mean it is possible, but I wonder what happens when one set to 75 Hz on the 

More information about the xorg mailing list