[ydl-gen] Video modes on the PS3

[Warren Nagourney]

Ooops, sorry. I left out the W - I am using a Samsung 940BW, whose  
native resolution is 1440x900.

I tried ps3videomode from both root and  non-root. I don't know of  
any way a command would not even be found by non-root users. At the  
worst, one might get a message saying that one needs to have  
privileges to run it. I then tried a "locate" and "updatedb", finding  
that these useful commands were missing.

I have been using  kboot.conf to change resolutions. It is very time  
consuming. In my investigations, I was hoping to write a script which  
tries a mode for about 30 seconds and then switches back to a default  
mode to avoid getting stuck in a non-functional video mode (that  
happened last night and I needed to shut off the machine using the  
switch.)

Thanks for the suggestion of adding 128 to the mode number - I'll  
play with that.

-wn

On Jan 8, 2007, at 1:42 PM, Rob Nava wrote:

> Did you try switching to 'root' before running ps3videomode?  I'm  
> pretty sure non-root users can't run it.
>
> If you're using a Samsung 940b, you're native resolution is  
> actually 1280 x 1024 ( http://www.samsung.com/Products/Monitor/ 
> LCD_Digital/LS19HABKBXAA.asp).
>
> Also, if you add 128 to whatever mode you want to run in, you can  
> get the true resoultion expected.  Normally, the PS3 compensates  
> for the overscan on Televisions that would make the edges of the  
> video be 'off screen'.
>
> I run in 1080p mode with ps3video 131 (mode 3 + 128 for non- 
> overscan mode).
>
> Try ps3videomode 140 on that 940B (1280 × 1024 with non-overscan  
> mode.)
>
> Also, running ps3videomode from the enlightenment desktop would  
> screw up the video pretty badly for me.  So try changing the  
> kboot.conf file to offer different ps3video options.
>
> -Rob
>
> On 1/8/07, Warren Nagourney <warren at phys.washington.edu > wrote:
> I have done some investigation of the various video modes on the PS3
> (in Linux) and find that one is not very badly compromised when using
> a standard computer monitor.
>
> First, there are at least 3 VESA modes which are the same as standard
> computer modes (at 60 Hz):
>
> Mode 11  -  1280x768
> Mode 12  -  1280x1024
> Mode 13  -  1920x1200
>
> I am considering trying numbers >13 to see what happens. After all,
> the RSX is a modified NVIDIA GPU and they probably support lots of
> modes in addition to the published ones. All I need is a working
> "ps3videomode" command - it was not installed with the standard YDL5
> installation (nor was "emacs", "locate" and a host of other nice
> commands - does anyone know an easy way to get them all without
> installing the RPMs individually?)
>
> These three modes work on my Samsung 940B (using the digital port)
> whose native resolution is 1440x900. I was blown away that the
> 1920x1200 worked, though the monitor put up a little message
> complaining about it. Of course, they were all scaled and looked more
> or less fuzzy (actually the 1920x1200 was best, but I got a headache
> from the fuzziness using it for any time). I believe that using a DVI-
> VGA adaptor should allow the monitor to avoid scaling at the expense
> of a small dark border (on modes 11 and 12).
>
> By the way, the Samsung monitor is HDCP compliant, but I find it hard
> to believe that this matters for anything except (possibly) playing a
> BlueRay movie. I am pretty sure it doesn't matter in Linux.
>
> The bottom line is that one can get good video using a fairly cheap
> 1280x1024 LCD monitor (I have seen them for $150 or less). Video
> acceleration is another matter...
>
> -wn
>
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