Blackmagic Forum

We have bought 6 DeckLink Duo 2 capture cards. Each of them are installed onto a HPE ProLiant DL360 Gen9 Server. We can capture video from SDI1 and SDI2 on them using ffmpeg. However, SDI3 and SDI4 inputs failed after a few seconds every time while we captured video using ffmpeg when all 4 inputs were used. SDI3 and SDI4 worked fine when SDI1 and SDI2 are not used. SDI3 and SDI4 worked if SDI1 and SDI2 were not used.

Similar results happened on Media Express as well. The SDI3 and SDI4 input went black after a few seconds.

We have tried a Duo 2 card on a Dell Optiplex. All 4 SDI inputs were working simultaneously.

Is there anything we can do to get them work?

Thank you very much!

Configurations:

• Hardware
  
  • HPE ProLiant DL360 Gen9
  • Blackmagic DeckLink Duo 2
• OS
  $ cat /etc/redhat-release
  CentOS release 6.8 (Final)
• Kernel
  $ uname -a
  Linux rthk-1 2.6.32-642.el6.x86_64 #1 SMP Tue May 10 17:27:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• firmware and driver
  $ dmesg | grep Black
  BlackmagicIO: Driver version 10.8.5a4 loading
  BlackmagicIO: Enabled device "DeckLink Duo 2 (1)" x4/5 Gbps (cdcf7b0,510800) FW Date: 03-15 08:29
  BlackmagicIO: DeckLink Duo 2 (1) as blackmagic!io1 [0000:08:00.0]
  BlackmagicIO: Initialised serial driver for blackmagic!io1
  BlackmagicIO: Enabled device "DeckLink Duo 2 (3)" x4/5 Gbps (cdcf7b2,510801) FW Date: 03-15 08:29
  BlackmagicIO: DeckLink Duo 2 (3) as blackmagic!io2 [0000:08:00.0]
  BlackmagicIO: Initialised serial driver for blackmagic!io2
  BlackmagicIO: Enabled device "DeckLink Duo 2 (2)" x4/5 Gbps (cdcf7b1,510802) FW Date: 03-15 08:29
  BlackmagicIO: DeckLink Duo 2 (2) as blackmagic!io3 [0000:08:00.0]
  BlackmagicIO: Initialised serial driver for blackmagic!io3
  BlackmagicIO: Enabled device "DeckLink Duo 2 (4)" x4/5 Gbps (cdcf7b3,510803) FW Date: 03-15 08:29
  BlackmagicIO: DeckLink Duo 2 (4) as blackmagic!io4 [0000:08:00.0]
  BlackmagicIO: Initialised serial driver for blackmagic!io4
• software
  
  • $ ffmpeg_binary/bin/ffmpeg -version
    ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
    built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
    configuration: --enable-gpl --enable-nonfree --enable-librtmp --enable-libx264 --enable-libx265 --enable-libfaac --enable-shared --enable-decklink --extra-cflags='-I/ /ffmpeg_source/ffmpeg/BlackmagicDeckLinkSDK10.5/Linux/include/ -I/ffmpeg_source/ffmpeg/component' --extra-ldflags='-L/ ffmpeg_source/ffmpeg/BlackmagicDeckLinkSDK10.5/Linux/include/ -L/ffmpeg_source/ffmpeg/component' --extra-libs=-ldl
    libavutil 54. 31.100 / 54. 31.100
    libavcodec 56. 60.100 / 56. 60.100
    libavformat 56. 40.101 / 56. 40.101
    libavdevice 56. 4.100 / 56. 4.100
    libavfilter 5. 40.101 / 5. 40.101
    libswscale 3. 1.101 / 3. 1.101
    libswresample 1. 2.101 / 1. 2.101
    libpostproc 53. 3.100 / 53. 3.100
  • Media Express version 3.5.3

You could try a few BIOS setting options:
[*]Disable power management
[*]Force PCI v2 (disables v1 support)
[*]Might be some hot plugging support you could disable
[*]Check if there is a bios update

Thank you for your suggestions.

We have tried a few combinations on the BIOS and power settings as suggested. None helped.

Furthermore, we have tried Blackmagic Driver version 10.8.6a2 as well as CentOS 7.2. Neither solved the issue.