View Single Post
Old 04-25-07, 08:58 AM   #12
rerushg
Registered User
 
Join Date: Mar 2007
Location: South Carolina, USA
Posts: 99
Send a message via AIM to rerushg
Default Re: 1080i Resolution unused by nvidia-auto-select on 60-inch HDTV, [ Sony KDS-R60XBR1

Aaron:
Not an expert here so hope I'm not "stating the obvious" to you.

Note that in MVinny's original bug report the 1920x1080 mode was rejected because vertrefresh was out of range from EDID data.
He then added the option to ignore vertrefresh check so mode was accepted. But he got a vertically stretched 1920x540 display. That suggests to me that the same 1920x540 data was "interlaced with itself", resulting in apparent vert stretch.

Seems to be a "factor of 2" misunderstanding going on. (Same with my Panasonic.)
I.e.: I believe that in interlaced mode a frequency of 60 Hz is "per pass" @ 1920x540. At the needed 2 passes per "total picture" the "net frequency per picture" is 30 Hz.
Perhaps NV's 120 Hz mode frequency is a bug? Perhaps EDID should report 120 hz?
Seems the two are out of sync.
rerushg is offline   Reply With Quote