willing to test HDMI for the rest of the afternoon

while i try out a new gin that i've never had before, i'm willing to
test HDMI on the BBB this afternoon since i'd really like to get it
working perfectly with my full HD ASUS flat panel.

  to recap, i have a full HD res ASUS VE228H:

http://www.canadacomputers.com/product_info.php?cPath=22_700&item_id=036231

which works perfectly connected to my ASUS laptop. and if i plug it
into my BBB running 2013.05.08, i do indeed get the desktop but
there's a noticeable, 1-2 pixel left-to-right jitter. apart from the
jitter, it's fine, the desktop is correct.

  so ... i'm open to suggestions as to what to try to get rid of the
jitter. from a previous posting, i recall that the EDID info is
brought out as /sys/class/drm/card0/card0-HDMI-A-1/edid, so here's
what my BBB is reporting currently while the monitor is connected and
the desktop is displayed:

# xxd edid
0000000: 00ff ffff ffff ff00 0469 fa22 0101 0101 .........i."....
0000010: 1c16 0103 8030 1b78 ea3d 25a3 5951 a025 .....0.x.=%.YQ.%
0000020: 0f50 54bf ef00 714f 8180 8140 9500 a940 .PT...qO...@...@
0000030: b300 d1c0 0101 023a 8018 7138 2d40 582c .......:..q8-@X,
0000040: 4500 dd0c 1100 001e 0000 00fd 0032 4c1e E............2L.
0000050: 5311 000a 2020 2020 2020 0000 00fc 0056 S... .....V
0000060: 4532 3238 0a20 2020 2020 2020 0000 00ff E228. ....
0000070: 0043 374c 4d51 5330 3338 3638 350a 014d .C7LMQS038685..M
0000080: 0203 1ef1 4b90 0504 0302 0111 1213 141f ....K...........
0000090: 2309 0707 8301 0000 6503 0c00 1000 1a36 #.......e......6
00000a0: 80a0 7038 1e40 3020 3500 dd0c 1100 001a ..p8.@0 5.......
00000b0: 6621 56aa 5100 1e30 468f 3300 dd0c 1100 f!V.Q..0F.3.....
00000c0: 001e 011d 0072 51d0 1e20 6e28 5500 dd0c .....rQ.. n(U...
00000d0: 1100 001e 8c0a d08a 20e0 2d10 103e 9600 ........ .-..>..
00000e0: dd0c 1100 0018 011d 8018 711c 1620 582c ..........q.. X,
00000f0: 2500 dd0c 1100 009f 0000 0000 0000 0032 %..............2

Just for grins, try this procedure and see where you end up.

http://circuitco.com/support/index.php?title=BeagleBoneBlack_HDMI

Gerald

i did that earlier, with the following result. waited for BBB to
power up, then plugged in monitor. what i got was total garbage on the
display (although if you looked closely, you might recognize a desktop
but completely messed up by a lack of proper sync). so not a usable
desktop.

  rebooted, at which point i got a usable desktop (if you ignore the
aforementioned slight jitter). so simply plugging in this monitor to a
running BBB wasn't sufficient -- it seems necessary to boot with the
monitor already connected.

  so for this particular display, it's really close. just not
perfect.

rday

Garbage is actually good as indicated in the instructions. It means the HDMI is working and the cable is good and connected to the right port.

Yes, you have to have it connected, otherwise it cannot get the EDID.

Did you try the other suggested steps to improve the display? What resolution did the display come up at?

Gerald

finally found my powered hub so plugged in mouse and keyboard, got
my desktop, went under "Monitor Preferences" to read:

  Monitor: Unknown
  Resolution: 1280x720
  Refresh rate: 0 Hz
  Rotation: Normal

the desktop is totally usable, other than the slight, annoying jitter.
the boundaries seem to be fine, menu and title bars properly placed at
borders of display.

rday

The default is to a TV resolution. Currently 1280x720 is the maximum it can do at a TV resolution. This will allow the audio to work, as it only works at TV resolutions. This is not the best resolution for a monitor.

What I hope is that the guys can come up with is a way to set the resolution.

Can you make a short video showing the jitter so I can get it to the guys and see what they think? I know it may be tough, but it is worth a shot.

Gerald

while i figure out how to take a video, any other ideas? it's
clearly close, but the fact that Monitor Preferences says "Unknown
monitor" suggests the EDID either wasn't recognized or perhaps wasn't
even read.

  is there a way to validate what's in the sysfs edid file? here's the
contents:

# xxd edid
0000000: 00ff ffff ffff ff00 0469 fa22 0101 0101 .........i."....
0000010: 1c16 0103 8030 1b78 ea3d 25a3 5951 a025 .....0.x.=%.YQ.%
0000020: 0f50 54bf ef00 714f 8180 8140 9500 a940 .PT...qO...@...@
0000030: b300 d1c0 0101 023a 8018 7138 2d40 582c .......:..q8-@X,
0000040: 4500 dd0c 1100 001e 0000 00fd 0032 4c1e E............2L.
0000050: 5311 000a 2020 2020 2020 0000 00fc 0056 S... .....V
0000060: 4532 3238 0a20 2020 2020 2020 0000 00ff E228. ....
0000070: 0043 374c 4d51 5330 3338 3638 350a 014d .C7LMQS038685..M
0000080: 0203 1ef1 4b90 0504 0302 0111 1213 141f ....K...........
0000090: 2309 0707 8301 0000 6503 0c00 1000 1a36 #.......e......6
00000a0: 80a0 7038 1e40 3020 3500 dd0c 1100 001a ..p8.@0 5.......
00000b0: 6621 56aa 5100 1e30 468f 3300 dd0c 1100 f!V.Q..0F.3.....
00000c0: 001e 011d 0072 51d0 1e20 6e28 5500 dd0c .....rQ.. n(U...
00000d0: 1100 001e 8c0a d08a 20e0 2d10 103e 9600 ........ .-..>..
00000e0: dd0c 1100 0018 011d 8018 711c 1620 582c ..........q.. X,
00000f0: 2500 dd0c 1100 009f 0000 0000 0000 0032 %..............2

You may be right on the EDID. It looks to prefer 1920x1080. But I think there is more information in there than just what was parsed. The drive may not have found a suitable resolution and defaulted to 1280x720 or if it detected that it was audio capable, defaulted to 1280x720, which is what we have currently configured it to do.

In your case, my suggestion is to sit tight for now and let us continue down the path we are on and see what comes from that effort.

Gerald

ok, let me know if there's any further testing i can do.

rday