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

[Julio M. Merino Vidal]

On 05/01/2008, at 22:17, Geert Uytterhoeven wrote:

> 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.

Hmmm, but can ps3-linux use that format?  I thought it couldn't (i.e.  
it was restricted to 16:9 formats), but otherwise that'd be good news!

-- 
Julio M. Merino Vidal <jmerino at ac.upc.edu>