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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. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @swordofomen and

      Well it’s RF interference @ ~60Hz that looks just like usb and seems to change airgapped Raspi boot when present. Other than that, probably completely boring, so maybe I should ignore it?

      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @swordofomen and

      Help, my fingers seem to be infected with #BadBIOS2! The virus is modulating airgap crossing communications using 50Hz ASK! Should I see a doctor??pic.twitter.com/Nh52dFt6xp

      4 replies 10 retweets 45 likes
    3. SethOps‏ @swordofomen 12 Jun 2018
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      Replying to @marcan42 @dragosr and

      Oh snap you have the Thetans!

      1 reply 0 retweets 1 like
    4. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @swordofomen @marcan42 and

      You are so hung up on the ground that you are missing the point about the picked up RF. Pictures on the left are without the signal, floating ground (batt scope), pictures on the right are with signal, same measurement, same device, same cables, same location. Note impulses.pic.twitter.com/78L8yVCofg

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @swordofomen and

      You seem to have issues understanding the concept that a signal that repeats on a 16.66 ms cycle is mains noise. I don't care what it looks like. It's going to look different for different PSUs. It's still mains noise. Protip: your scope isn't going to show you "RF" at 1ms/div.

      2 replies 0 retweets 13 likes
    6. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @swordofomen and

      Are you sure about that?https://youtu.be/dtfu2ZgmV8w 

      3 replies 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 12 Jun 2018
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      Replying to @dragosr @swordofomen and

      Wow, my phone charger is possessed too. Look at all those glitch pulses! (Or, you know, it's just normal noise from a switching power supply)pic.twitter.com/BwhSCXsJ1M

      4 replies 3 retweets 18 likes
    8. dragosr‏ @dragosr 12 Jun 2018
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      Replying to @marcan42 @swordofomen and

      You seem awfully intent on dimissing my hypothesis. Were you part of the dev team or something?

      6 replies 0 retweets 0 likes
    9. Joe Fitz‏ @securelyfitz 12 Jun 2018
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      Replying to @dragosr @marcan42 and

      Ive been quiet on this thread so far, but Dragos, what is the hypothesis? I think Hector and others are showing you the data and procedure (however indirectly) to test your hypothesis.

      3 replies 0 retweets 6 likes
    10. dragosr‏ @dragosr 13 Jun 2018
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      Replying to @securelyfitz @marcan42 and

      Again, airgapped, wifi/bt desolderered, fresh retail install, hw mod disable. How does it get owned, packages (and lots not small) appear? Hypothesis: Initial vector dwc_otg, signal inject, hits DTB, mmc0p1 etc, PXE boot or sw load over SDR using audio chip. (prob !lan-hw)

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 13 Jun 2018
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      Replying to @dragosr @securelyfitz and

      Stop. Making. Up. Crazy. Theories. Start at the freaking beginning. What is your test setup? What packages appear? How did you do the initial install? Why are you so convinced it's owned?

      12:29 AM - 13 Jun 2018
      • 4 Likes
      • Friedemann Wachsmuth Cybergibbons Daniel Attie Grande
      1 reply 0 retweets 4 likes
        1. New conversation
        1. dragosr‏ @dragosr 13 Jun 2018
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          Replying to @marcan42 @securelyfitz and

          Sigh. Not twitter friendly. I'll show you more next time in Japan, likely Nov. Install is retail noobs. Their package loadout varies, but extra pkgs on sys without networks.... configs change without you, change back again, not rocket science. Seems to not like ctl disable. :-)

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 13 Jun 2018
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          Replying to @dragosr @securelyfitz and

          I'll be happy to take a look then.

          0 replies 0 retweets 1 like
          3. End of conversation

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