Display 2160p50 Impossible [Decklink 4K 12G - Linux]

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lilouk77

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  • Real Name: Nabil Abdelilah

Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostMon Jun 10, 2019 9:41 am

Hi,

I have a Decklink 4k 12G under Cento0s 7 (kernel 3.10.957) with latest Desktop Video 11.2 driver.

When using TestPatern binary from 11.2 sdk I was'nt able to display anything when mode is "2160p50"

I did a test with 10.11.4 version with success. But since this version I wasn't able to display anything when mode is "2160p50".

The same board with latest driver on windows 10 is working fine.

Please help me

Regards
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lilouk77

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  • Real Name: Nabil Abdelilah

Re: Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostThu Jun 13, 2019 3:44 pm

Could you please give me an answer ?
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Cameron Nichols

Blackmagic Design

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Re: Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostFri Jun 14, 2019 5:06 am

Hi Nabil,

I was able to run TestPattern sample OK at 2160p50 on my machine. My setup is CentOS 7.6, kernel 3.10.0-957, Desktop Video 11.2 with DeckLink 4K Extreme 12G.

From the Desktop Video Setup application, can you check your output link setting is correct (single-link/dual-link) and that you are outputting YCbCr 422.

Regards
Cameron
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lilouk77

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  • Real Name: Nabil Abdelilah

Re: Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostFri Jun 14, 2019 3:50 pm

Hi Cameron,

My setup is CentOS 7.6, kernel 3.10.0-957, Desktop Video 11.2 with DeckLink 4K Extreme 12G.

From the Desktop Video Setup application, I've checked my output link setting is correct and out put
is YCbCr 422.

But I still can't see anything displayed on SDI or HDMI when using TestPattern sample at 2160p50.

All other modes are working fine.

Regards
Nabil
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Cameron Nichols

Blackmagic Design

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  • Joined: Mon Sep 04, 2017 4:05 am

Re: Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostThu Jun 27, 2019 2:56 am

Hi Nabil,

Can you provide the full command for TestPattern so I can check locally?

Thanks
Cameron
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webhostnews

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Re: Display 2160p50 Impossible [Decklink 4K 12G - Linux]

PostThu Jun 27, 2019 12:47 pm

it's possible i define display resoution. Most commonly 4K Ultra HD refers to 3840 x 2160 pixels (referring to the approximately 4000-pixel wide display), which has exactly twice as many pixel rows and columns.

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