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Old 05-13-12, 03:57 PM   #4
alan242
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Join Date: Sep 2006
Posts: 20
Default Re: Removal of overscan options in 302.07...

I'd like to add too that the new implementation seems to force scaling that visibly exists to the application. In prior versions, it was transparent to the application. With it being visible to the application, it causes bad things in MythTV as it thinks the screen size has changed and tries to scale the theme and other things.

I have a GT 430 connected via HDMI to a Pioneer VSX-919 and that's connected to a Samsung LNS-4692.

In drivers before 302.07 (currently 290.10), I have a line in nvidia-settings.rc of

0/OverscanCompensation[DFP-1]=105

and Mythtv shows this in it's start up logs

2012-05-13 06:38:22.268 Using screen 0, 1920x1080 at 0,0
2012-05-13 06:38:22.276 Desktop video mode: 1920x1080 59.9988 Hz
2012-05-13 06:38:22.294 MythUI Image Cache size set to 20971520 bytes
2012-05-13 06:38:22.317 Enabled verbose msgs: important general
2012-05-13 06:38:22.321 Primary screen: 0.
2012-05-13 06:38:22.321 Using screen 0, 1920x1080 at 0,0

WIth 302.07, I removed the line from nvidia-settings and tried in xorg:

Option "MetaModes" "DFP-1: 1920x1080_60i_0 { ViewPortOut=1914x1074+5+5 }"

and MythTV now does not think the screen is 1920x1080 anymore

2012-05-04 20:07:09.625 Using screen 0, 1914x1074 at 0,0
2012-05-04 20:07:09.666 Desktop video mode: 1920x1080 59.9988 Hz
2012-05-04 20:07:09.694 MythUI Image Cache size set to 20971520 bytes
2012-05-04 20:07:09.726 Enabled verbose msgs: important general
2012-05-04 20:07:09.730 Primary screen: 0.
2012-05-04 20:07:09.731 Using screen 0, 1914x1074 at 0,0

It's noticeable as it causes a pause at MythTV startup as it stops to rescale the theme to the screen. And depending on elements in theme, it introduces graphical artifacts. I noticed it in text and other areas.

Alan
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