Re: EDID Prefered mode problems

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On Thu, 2006-01-26 at 14:31 +0000, Barry Scott wrote:
> I'm running 4.5.99.18 and having problems with supporting HDReady panels.
> The HDReady panels support 1360x768@60Hz typically.
> Using the i810 driver on a i945G with the i915resolution hack I can
> get the driver to set 1360x768 but not at 60Hz. Talking to alanh it seems
> that the problem may be in XFree86 not matching modes correctly.
> We try changing to LOOK_CLOSEST_CLOCK but that does not
> work. At the moment I've forced 60 into the calls to prevent any
> higher frequency being used.
> 
> I assume that its not just the i810 driver that will have this problem,
> I know the CLE266 does not work as well and I'll pick up Luc's
> newer driver code soon to test again.
> 
> Is this problem with EDID prefered mode known about? Have we
> missed a way to makes things work?

Barry,

I think you'll find that XFree86 already adds the EDID modes.

Additionally, it's more likely the driver that's ignoring CLOSEST_CLOCK
rather than XFree86 too. I didn't say it was XFree86 to blame here.

There's some work to fix all this up correctly and the i810 driver just
makes it worse when it has complete reliance on the Video BIOS.

Alan.

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