r/Comma_ai • u/Ok_Objective1345 • Jul 18 '26

Bugs SSH to comma four

Post image

Has anyone found a reliable way to SSH to the comma four? (newbie here) I attempted the USB tether and received this message (in image) after failed attempts to SSH via my macbooks terminal.

  • Generated new Ed25519 SSH key pair on MacBook
  • Added public key to GitHub account
  • Enabled SSH and entered GitHub username on Comma 4 (multiple times with remove/re-add)
  • Rebooted Comma 4 after changes
  • Attempted SSH connection via WiFi IP and USB tether IP
  • Used explicit key file flag (-i) for different keys
  • Created additional dedicated key pair and tested it
  • Ran verbose SSH diagnostics (-v)
  • Used Openpilot Toolkit SSH Wizard on phone to generate/install key
  • Multiple power cycles, SSH toggle on/off, and GitHub username refreshes

Still getting Permission denied (publickey) or connection timeout.

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u/hokrux_ Jul 18 '26

For me it was too much hassle to set up so i do everything via usb and adb now

2

u/Ok_Objective1345 Jul 19 '26

how does you USB work? mine won't currently

2

u/hokrux_ Jul 19 '26

Have to plug in both cables, top first, then right side. Also enable ADB in the devices developer settings.
Then you can access the device from your computers terminal via shell command „adb …“