Nouveau - Jan 2017 - [PATCH 5/6] drm: Delete "mandatory" stereographic modes

On Wed, Jan 18, 2017 at 04:33:43PM +0000, Damien Lespiau
wrote:
> On Wed, Jan 18, 2017 at 11:27:16AM -0500, Ilia Mirkin wrote:
> > Damien - did you ever test these mandatory modes on an actual
> > commercial 3D TV or similar device?
> 
> My main testing device was a Samsung TV with this 3D_present bit set and
> all the advertised modes were working. Can't quite remember if that
> included the interleaved mode.
I even pushed the EDID of that TV to edid-decode [1] if someone needs to
check that the EDID parsing is correct. It'd be interesting to see what
the tool has to say about the edid of the sink causing problems, in
particular compare the mandatory modes to the other modes advertised by
that TV. Maybe we could see some kind of pattern emerge, like the 3D
modes supported being the ones with the timings in table 8-15.

-- 
Damien

[1] https://cgit.freedesktop.org/xorg/app/edid-decode/
    data/samsung-UE40D8000YU-hmdi

On Wed, Jan 18, 2017 at 11:57 AM, Ilia Mirkin <imirkin at alum.mit.edu>
wrote:
> On Wed, Jan 18, 2017 at 11:41 AM, Damien Lespiau
> <damien.lespiau at intel.com> wrote:
>> On Wed, Jan 18, 2017 at 04:33:43PM +0000, Damien Lespiau wrote:
>>> On Wed, Jan 18, 2017 at 11:27:16AM -0500, Ilia Mirkin wrote:
>>> > Damien - did you ever test these mandatory modes on an actual
>>> > commercial 3D TV or similar device?
>>>
>>> My main testing device was a Samsung TV with this 3D_present bit
set and
>>> all the advertised modes were working. Can't quite remember if
that
>>> included the interleaved mode.
>>
>> I even pushed the EDID of that TV to edid-decode [1] if someone needs
to
>> check that the EDID parsing is correct. It'd be interesting to see
what
>> the tool has to say about the edid of the sink causing problems, in
>> particular compare the mandatory modes to the other modes advertised by
>> that TV. Maybe we could see some kind of pattern emerge, like the 3D
>> modes supported being the ones with the timings in table 8-15.
>
> This is Alastair's display (one of them):
http://paste.lisp.org/display/335893
>
> I believe this is the interesting part:
>
>   Video data block
>     VIC  16 1920x1080 at 60Hz
>     VIC  31 1920x1080 at 50Hz
>     VIC   5 1920x1080i at 60Hz
>     VIC  20 1920x1080i at 50Hz
>     VIC   4 1280x720 at 60Hz
>     VIC  19 1280x720 at 50Hz
>     VIC   3 720x480 at 60Hz
>     VIC   2 720x480 at 60Hz
>     VIC  18 720x576 at 50Hz
>     VIC  17 720x576 at 50Hz
>     VIC   7 1440x480i at 60Hz
>     VIC   6 1440x480i at 60Hz
>     VIC  22 1440x576i at 50Hz
>     VIC  21 1440x576i at 50Hz
>     VIC  32 1920x1080 at 24Hz
>     VIC   1 640x480 at 60Hz
> ...
>     Extended HDMI video details:
>       3D present
>       Base EDID image size is in units of 1cm
>       VIC index 2 supports side-by-side (half, horizontal)
>       VIC index 3 supports side-by-side (half, horizontal)
>       VIC index 4 supports side-by-side (half, horizontal)
>       VIC index 5 supports side-by-side (half, horizontal)
>       VIC index 14 supports side-by-side (half, horizontal)
>       VIC index 0 supports top-and-bottom
>       VIC index 1 supports top-and-bottom
And for the record, this is his other TV (available at the same paste
url as above):

  Video data block
    VIC  16 1920x1080 at 60Hz (native)
    VIC  34 1920x1080 at 30Hz
    VIC  32 1920x1080 at 24Hz
    VIC   5 1920x1080i at 60Hz
    VIC   4 1280x720 at 60Hz
    VIC   3 720x480 at 60Hz
    VIC   2 720x480 at 60Hz
    VIC   1 640x480 at 60Hz
    Extended HDMI video details:
      3D present
      3D-capable-VIC mask present
      3D: Side-by-side (half, horizontal)
      3D: Top-and-bottom
      3D VIC indices: 2 4
      VIC index 0 supports side-by-side (half, horizontal)
      VIC index 1 supports side-by-side (half, horizontal)
      VIC index 2 supports side-by-side (half, horizontal)
      VIC index 3 supports side-by-side (half, horizontal)
      VIC index 4 supports side-by-side (half, horizontal)

After some more conversations with Alastair, it sounds like what's
actually going on is that it's just the frame-packing modes that
aren't working, but all the side-by-side and top-and-bottom modes from
the "mandatory" list work. At this point, I'm more inclined to
believe
that there's an issue in the nouveau implementation for frame-packed
modes. But it could still be the TVs themselves that don't support
that at all.

Cheers,

  -ilia