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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 16 Sep 2020
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      Dropping by briefly for an update on HDMI to USB things. First, properly fixed MS2109 audio was merged to the kernel earlier, both fixing the regression I introduced with the prior patch, and putting the channels in the right order (turns out the problem was more subtle).

      1 reply 2 retweets 39 likes
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    2. Hector Martin‏ @marcan42 16 Sep 2020
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      Also I dropped in the quirk to make audio work on the Pioneer DDJ-RB DJ controller (that story from a year ago...) while I was submitting patches to the ALSA maintainers.

      1 reply 0 retweets 9 likes
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    3. Hector Martin‏ @marcan42 16 Sep 2020
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      And now, this thing, which I bought a while ago but hadn't looked at yet: TL;DR it's crap. Fake USB3.0 (connector & cable, but not internals). MJPEG only. And it *craps out* if the frame is too complex (gives up, refuses to stream), probably fixed qp MJPEG exceeding bandwidth?pic.twitter.com/JjfJKuUykh

      2 replies 0 retweets 21 likes
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    4. Hector Martin‏ @marcan42 16 Sep 2020
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      It does seem to stream 1080p unblurred unlike the MS2109, when it works (plenty of MJPEG artifacts though), but you're much better off getting a real USB3.0 unit. Internal topology is HDMI splitter -> Sil9293 -> FIC7618 (blacktopped as TC1860, but I was able to scrape it off)

      3 replies 0 retweets 17 likes
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    5. Hector Martin‏ @marcan42 16 Sep 2020
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      FWIW here is the real USB3.0 unit that I paid *less* for than the fake one:https://www.aliexpress.com/item/4001044872081.html …

      7 replies 2 retweets 28 likes
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    6. Arsenio Dev‏ @Ascii211 16 Sep 2020
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      Replying to @marcan42

      Welp, gonna take a shot at this one.

      1 reply 0 retweets 0 likes
    7. Joe Fitz‏ @securelyfitz 16 Sep 2020
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      Replying to @Ascii211 @marcan42

      I've got a pair that look just like that which have USB3 internals but only connect as 2.0. you're welcome to them if you want to year them down, or burn them in sacrifice.

      2 replies 0 retweets 1 like
      Hector Martin‏ @marcan42 21 Sep 2020
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      Replying to @securelyfitz @Ascii211

      Did you flip the USB-C connector? It's a cheap noncompliant implementation without a mux, so the USB3.0 pins only connect in one direction. Mine is like that.

      5:57 AM - 21 Sep 2020
      1 reply 0 retweets 0 likes
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        1. Joe Fitz‏ @securelyfitz 21 Sep 2020
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          Replying to @marcan42 @Ascii211

          No, they were usb 3 type A connectors not C. I really dont understand why people think it's ok to put type A on devices.

          1 reply 0 retweets 0 likes
        2. Arsenio Dev‏ @Ascii211 21 Sep 2020
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          Replying to @securelyfitz @marcan42

          Wtaf

          1 reply 0 retweets 0 likes
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