ROC RK3328/RK3399 No Video on Monitor

Hardware
#1

Please use this thread to report no video issues on boards with the ROC- model prefix.

  • ROC-RK3328-CC Renegade
  • ROC-RK3399-PC Renegade Elite

This device was designed for most standard resolution HDTVs and monitors. HDMI supports two modes:

  • CEA Consumer Electronics Association
  • DMI Digital Media Interface

Different video modes require proper clock generator and setup to create the appropriate synchronization frequencies with the display. This is a very complex topic beyond the scope of this post.

If you have a monitor that is not showing video, please post on this thread with the following information if possible:

  1. Monitor/TV Make and Model
  2. Native Resolution
  3. EDID Dump

It is not guaranteed that every monitor resolution is supported due to the limitations on the onboard clock generator. By reporting the issue, we can identify target clocks and resolutions to debug over time.

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#2
  1. Samsung SyncMaster 2443BWX with HDMI/DVI adapter
  2. 1920 x 1200

xxd edid
00000000: 00ff ffff ffff ff00 4c2d 3f04 3432 594d …L-?.42YM
00000010: 1912 0103 8034 2078 2aee 91a3 544c 9926 …4 x*…TL.&
00000020: 0f50 5423 0800 a940 8180 8140 0101 0101 .PT#…@…@…
00000030: 0101 0101 0101 283c 80a0 70b0 2340 3020 …(<…p.#@0
00000040: 3600 0644 2100 001a 0000 00fd 0038 3c1e 6…D!..8<.
00000050: 5111 000a 2020 2020 2020 0000 00fc 0053 Q… …S
00000060: 796e 634d 6173 7465 720a 2020 0000 00ff yncMaster. …
00000070: 0048 564d 5136 3030 3334 360a 2020 00b1 .HVMQ600346. …

#3

Samsung SyncMaster P2770HD with HDMI->DVI adapter
1920 x 1080 @60Hz

00000000: 00ff ffff ffff ff00 4c2d ec05 0000 0000 ........L-......
00000010: 1913 0103 803c 2278 2a34 81a6 5648 9a24 .....<"x*4..VH.$
00000020: 1250 54bf ef80 714f 8100 8140 8180 9500 .PT...qO...@....
00000030: 950f a940 b300 1a36 80a0 7038 1f40 3020 ...@...6..p8.@0
00000040: 3500 5550 2100 001a 0000 00fd 0038 4b1e 5.UP!........8K.
00000050: 5111 000a 2020 2020 2020 0000 00fc 0053 Q... .....S
00000060: 796e 634d 6173 7465 720a 2020 0000 00ff yncMaster. ....
00000070: 0048 3141 4b35 3030 3030 300a 2020 0011 .H1AK500000. ..

#4
  1. Vilros Maker Shack 10 Inch LCD Screen Flip-Back Case for Raspberry Pi 4 with HDMI
  2. 1280 X 800

xxd edid
00000000: 00ff ffff ffff ff00 5304 2578 4554 0000 …S.%xET…
00000010: 241d 0103 8029 1778 2e60 81a6 564a 9c25 $…).x...VJ.% 00000020: 1250 54a5 6000 0101 0101 0101 0101 0101 .PT.…
00000030: 0101 0101 0101 9e20 0090 5120 1f30 4880 … …Q .0H.
00000040: 3600 99e6 1000 001a 011d 0072 51d0 1e20 6…rQ…
00000050: 6e28 5500 c48e 2100 0020 0000 00fd 0032 n(U…!.. …2
00000060: 4c18 530f 000a 2020 2020 2020 0000 00fc L.S… …
00000070: 0056 494c 524f 530a 2020 2020 2020 0194 .VILROS. …
00000080: 0203 17f1 4403 0201 1123 097f 0765 030c …D…#…e…
00000090: 0010 0083 0100 0064 1900 4041 5826 2018 …d…@AX& .
000000a0: 8836 0099 e610 0000 1e00 0000 1000 1c16 .6…
000000b0: 2058 2c25 0013 2b21 0000 9f00 0000 1000 X,%…+!..
000000c0: d01e 206e 2855 0013 2b21 0000 1e8c 0ad0 … n(U…+!..
000000d0: 8a20 e02d 1010 3e96 0013 2b21 0000 1800 . .-…>…+!..
000000e0: 0000 0000 0000 0000 0000 0000 0000 0000 …
000000f0: 0000 0000 0000 0000 0000 0000 0000 00a8 …

side note: display works fine connected to a blu-ray player