X & ViewSonic VG710b using the 810 driver

Bill Gradwohl bill at ycc.com
Mon Oct 3 01:07:07 UTC 2005


On Sun, 2005-10-02 at 19:44 -0500, Jeff Vian wrote:
> It may be that the auto-sync feature of the monitor is requesting 87Hz
> for that resolution and so it is bailing out since the refresh rate is
> limited to a max of 85 by xorg.conf.  Note that you could have tested by
> manually adjusting that setting in xorg.conf and seen if the new setting
> would work.
> 
Actually, I think its the other way around. The monitor tops out at 85Hz
and the electronics on the video chipset is sending out 87Hz by mistake.

I further think that the 87Hz is due to some internal setting of clock
speeds, etc that X is responsible for. The answer is supposed to be
85Hz, but thru some set of calculations, rounding, etc, 87Hz is
requested of the electronics. 

The only thing that changed over the course of a few hours is going from
an old version of X to the most recent, and the old version worked at
1024x768 @ 85Hz perfectly. The new one won't work at that resolution and
V refresh rate, but will work at a higher resolution that uses a lower V
refresh rate. 

Or maybe it's got something to do with that new 10th planet Xena that
they discovered.

-- 
Bill Gradwohl





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