[SOLVED] disable_overscan=1 not working

[raspberry_pd]

(16th Jan, 2013 10:34 AM)CurlyMo Wrote:  We don't have any influence on the config.txt option, that's all raspberry pi firmware. So i doubt there would be any difference in behavior in OE, Raspbmc and XBian.

Could you clarify please. Are you saying that XBian no longer makes changes to the config.txt file? AFAIK it has in the past. For example, to set the initial overclocking to 840 MHz.

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(16th Jan, 2013 10:17 AM)obo Wrote:  I've just installed a fresh XBian 1.0 alpha 4, with my TV connected over HDMI. The default config.sys appears to disable overscan, but I still have it present on boot. The Raspberry logo and kernel output are clipped, as is XBMC once it starts.

I've also been testing Rasbmc with a different SD card on the same setup, and it has no problem disabling overscan. If I remove the option I get a similar amount of clipped image to XBian.

I've not read any other reports of similar issues. I'm considering just copying the FAT partition contents from the working setup, but wasn't sure if the XBian files included specific settings.

Is there something simple I'm missing, or could try?

To be honest, the term overscan doesn't mean much to me in practicality terms. However I notice that when running in 720p mode on my Sony Bravia, the on-screen display elements such as audio volume and the control buttons at the bottom of the screen, display partially beyond the visible part of the screen. I suspect this is what most people refer to as overscan but at the same time I think a lot of people may use the term incorrectly.

Anyway, I suspect this issue may be more related to the following Playback setting

Quote:

• Sync playback to display
  • This setting enables syncing the video to the refresh rate of the monitor.
    

and/or

Quote:

• Adjust display refresh rate to match video
  • Defines when the refresh rate adjustments should take place.
    

Although the term "refresh rate" is used, I strongly suspect this actually refers to display mode or resolution, colour depth AND refresh rate. My suspicions are based on watching smaller resolution video and having the monitor drop into 720p mode (which the Bravia helpfully informs the user it is doing this by an OSD message that I suspect other displays don't show you). Then when I play higher resolution video, or the low-res video stops and the XBMC screens appear again, the display switches back to 1080p mode.

Do you have the same symptoms?

I'd like to test this theory of mine through the tvservice utility and I'll add some instructions in here on how to do that if anyone is interested.