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Thread: DisplayPort Multi-Stream Transport Starts Working On Linux

  1. #1
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    Default DisplayPort Multi-Stream Transport Starts Working On Linux

    Phoronix: DisplayPort Multi-Stream Transport Starts Working On Linux

    The work by David Airlie of Red Hat's DisplayPort Multi-Stream Transport is beginning to show success...

    http://www.phoronix.com/vr.php?view=MTY4MDI

  2. #2
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    Default sweet

    4k 60Hz here we come

  3. #3
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    Default

    It's a good start but we need to get more resources behind this to get 4K working on Linux ASAP. My next build will definitely be a 4K system for my photography work and the upcoming Thunderbolt 3 will allow multiple 4K monitors via Thunderbolt ports.

  4. #4
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    Default

    daisy chainin' FTW! Now you only need one monitor to be close enough to your box.

  5. #5
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    Default

    Quote Originally Posted by FourDMusic View Post
    daisy chainin' FTW! Now you only need one monitor to be close enough to your box.
    It's not so much for daisy-chaining as most DP monitors don't have hubs so far as I know. It's really for the 4K displays which currently work by combining two streams - hence the Multi-Stream Transport - from a single DisplayPort socket to create a 4K image. The next gen will use HBR (High-Bit-Rate) which is a full bandwidth DisplayPort signal mode that allows proper 4K images. Right now MST is very buggy on all platforms and doesn't work with a lot of software.

  6. #6
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    Default

    Quote Originally Posted by TheLexMachine View Post
    It's not so much for daisy-chaining as most DP monitors don't have hubs so far as I know. It's really for the 4K displays which currently workby combining two streams - hence the Multi-Stream Transport - from a single DisplayPort socket to create a 4K image. The next gen will use HBR (High-Bit-Rate) which is a full bandwidth DisplayPort signal mode that allows proper 4K images. Right now MST is very buggy on all platforms and doesn't work with a lot of software.
    Well, the NEXT GEN is also going to be lossy. Goodbye pixel perfect data streams.
    I wish they'd at least offered a mode that performed lossless compression.

  7. #7
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    Default

    Quote Originally Posted by liam View Post
    Well, the NEXT GEN is also going to be lossy. Goodbye pixel perfect data streams.
    I wish they'd at least offered a mode that performed lossless compression.
    The next generation of DP uses a lossless compression method called "Display Stream Compression".

  8. #8
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    Default

    Quote Originally Posted by TheLexMachine View Post
    The next generation of DP uses a lossless compression method called "Display Stream Compression".

    http://www.displayport.org/pr/vesa-m...sion-standard/

    Currently adopted by eDP 1.4, but likely to be adopted by the next gen dp standard as you'll need either some compression method, or a new transport medium to handle data rates beyond 50Gb/s, or so.

  9. #9
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    May 2014
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    Default not just for 4K monitors, but for the 7 monitors with DP 1.2 MST support, too!

    According to this page on DisplayPort.org, there are currently 7 models of monitors that support DP 1.2 MST (click 'DP Displays Multi-Stream' then 'Search'):



    Of those, e.g. Dell U2414H is looking good and affordable. I was considering getting a pair of these in the near future.

    What are the latest news for DisplayPort Multi-Stream Transport support at this moment?

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