[mythtv-users] Sync rates for Sharp 32 inch LCD

[kteague@speakeasy.net]

> -----Original Message-----
> From: Richard Bronosky [mailto:mythtv at bronosky.com]
> Sent: Friday, January 20, 2006 05:46 PM
> To: 'mythtv'
> Subject: ****SPAM**** [mythtv-users] Sync rates for Sharp 32 inch LCD
> 
> I just want this information to be search locatable, which it currently is not.
> 
> I have a Sharp Aquos LC-32D4U which does NOT have DVI in, and therefore Sharp
> gives no frequency info for it, so I looked for the info on one of their DVI
> capable models.
> 
> Page 56 of http://sharpusa.com/files/tel_man_LC26_32GA5U.pdf suggests that the
> 1366x768 capable 32" Aquos LCDs can do H rates of 31.5-68.7kHz and V rates
> 60-85Hz.  I still haven't found out the dot clock.

Perhaps I'm missing something, but current versions of XFree86 (4.0.1 or greater) will query a display using DDC (Display Data Channel) to gather EDID (Extended Display Identificaiton Data).  This will tell X what the monitor is able to support.  This is all assuming your display is compliant with current VESA standards.  EDID v1.3 can be used with CRT and LCD monitors.  Your display may not be v1.3 compliant and, as such, may not report correct timing information.  For the record, since the release of XFree86 v4.0.1, I've used X -configure religiously, even on old CRT's, without major problems.

In regards to dot clock, that's a video card feature, but relates directly to what frequency dot clock you can throw at a given resolution.  Although it's old and outdated, http://www.tldp.org/HOWTO/text/XFree86-Video-Timings-HOWTO has some great information regarding this subject.