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   Miakoda (hellomiakoda@pdx.social)'s status on Sunday, 09-Feb-2025 18:49:17 JST Miakoda

   I'm not sure how this works...
   So, after moving the little car stereo set up, and replacing the power supply (roommie borrowed it, never returned it, and it ran off a 12v rail on the other PC for a while), I got HORRENDEOUS buzzing from the Aux on anything connected to power. Familiar sound, a ground loop. So I connected a wire from the chassis to a groudning screw on a nearby ups. Solved.
   ...but none of this actually connects to ground, wtf?! We lack grounding here!

   • Embed this notice
     Miakoda (hellomiakoda@pdx.social)'s status on Sunday, 09-Feb-2025 18:52:46 JST Miakoda

     in reply to

     It's so awesome running a big ass metal server, various other metal bodied equipment, all kinds of condictive chassis shit... and we have no connection to ground. 👍

   • Embed this notice
     Miakoda (hellomiakoda@pdx.social)'s status on Sunday, 09-Feb-2025 18:57:46 JST Miakoda

     in reply to

     • Hal Pomeranz

     @hal_pomeranz That's what I'm telling you - those outlets are open ground. All the outlets here are open ground

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     Hal Pomeranz (hal_pomeranz@infosec.exchange)'s status on Sunday, 09-Feb-2025 18:57:47 JST Hal Pomeranz

     in reply to

     @hellomiakoda I’m assuming the UPS has a three prong plug? Could you be getting to ground via the outlet it’s plugged into?

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     Miakoda (hellomiakoda@pdx.social)'s status on Sunday, 09-Feb-2025 19:00:15 JST Miakoda

     in reply to

     • Hal Pomeranz

     @hal_pomeranz If I use an outlet tester, open ground. Multimeter - hot to ground pin, 0v. Hot to box, 0v. Hot to neutral, 120-ish volts.
     There are no grounds anywhere.

     In fact, we had a major hazard here when a fault at the pole sent current down the coax, and since the grounding points for the coax connect to nothing, it was just live. I was the victim on that one!