[Cbe-oss-dev] Problems getting 1080p in the PS3

[Geert Uytterhoeven]

On Sat, 5 Jan 2008, Julio M. Merino Vidal wrote:
> On 05/01/2008, at 18:28, Jim Paris wrote:
> > Julio M. Merino Vidal wrote:
> >> I just bought a BenQ FP241WZ flat panel which is capable of 1920x1200
> >> and has HDCP.  I have hooked it up to my PS3 through the HDMI
> >> connection.  However, when I boot a Linux kernel from the ps3-linux
> >> branch, I only get a resolution of 1688x964 that covers the whole
> >> screen (minus the black margins due to the 16:10 vs. 16:9 aspect
> >> ratio difference, which is OK), instead of the 1920x1080 I should be
> >> getting.
> >>
> >> If I force the kernel to boot into 1920x1080 by specifying
> >> video=ps3fb:mode:170, then the framebuffer image goes off the screen
> >> in all of the four borders, as if the screen was only capable of
> >> showing 1688x964 pixels...
> >
> > Sounds like overscan.  According to the user manual available at
> >
> >   http://www.benq.ca/support/downloads/downloads.cfm? 
> > product=884&page=downloads&dtype=M
> >
> > there is an monitor option in your "picture advanced" menu to turn
> > that off.
> 
> Hmm... but why can't the hardware and/or software show the image  
> correctly?  I can understand the need for overscan in the past, but  
> with flat panels and digital connections?  And also considering that  

Originally 480/576i, 480/576p, 720p, 1080i, and 1080p were analog broadcast
resolutions including overscan.

Most (all?) displays I encountered so far have pixels falling off the borders
of the screen when using fullscreen modes.

> the laptop is able to show 1920x1200 without issues...

If 1920x1200 works with your flat panel, I would use that instead of 1080p.

With kind regards,

Geert Uytterhoeven
Software Architect

Sony Network and Software Technology Center Europe
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