Invalid status 6a80 (Unknown reason)) communicating with LedgerNanoS

[erjoalgo]

I'm unable to use legder-agent -s shell to ssh into a remote server. I get this error Invalid status 6a80 (Unknown reason)) communicating with LedgerNanoS even after being prompted and approving sending the public key.

█[my-hostname][~][0]$ ssh ocean
HID => b001000000
HID <= REDACTED
HID => REDACTED
HID <= REDACTED
2023-09-27 19:27:11,642 WARNING      unparsed blob: b'\x00\x00\x003\x00\x00\x00\x0bssh-ed25519\x00\x00\x00 A_\xca\x1ag@\x85%\xf9\xc9\xc7\x99os\xe3x\xa5o>\x8bz\xcf\x1e\x7f\x1a;2\x88\xa6+g3' [client.py:81]
2023-09-27 19:27:11,643 INFO         please confirm user "USER" login to "<ssh://USER|nist256p1>" using LedgerNanoS...            [client.py:47]
HID => b001000000
HID <= REDACTED
HID => REDACTED
HID <= 9000
HID => REDACTED
HID <= 6a80
2023-09-27 19:27:11,692 ERROR        signature with "<ssh://USER|nist256p1>" key failed                                               [protocol.py:151]
Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/device/ledger.py", line 134, in sign
    result = bytearray(self.conn.exchange(bytes(apdu)))
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/ledgerblue/comm.py", line 157, in exchange
    raise CommException("Invalid status %04x (%s)" % (sw, possibleCause), sw, response)
ledgerblue.commException.CommException: Exception : Invalid status 6a80 (Unknown reason)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/protocol.py", line 147, in sign_message
    signature = self.conn.sign(blob=blob, identity=key['identity'])
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/__init__.py", line 234, in sign
    return conn.sign_ssh_challenge(blob=blob, identity=identity)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/client.py", line 52, in sign_ssh_challenge
    return self.device.sign(blob=blob, identity=identity)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/device/ledger.py", line 136, in sign
    raise interface.DeviceError(
libagent.device.interface.DeviceError: Error (Exception : Invalid status 6a80 (Unknown reason)) communicating with LedgerNanoS
sign_and_send_pubkey: signing failed for ECDSA "<ssh://USER|nist256p1>" from agent: communication with agent failed
2023-09-27 19:27:11,695 WARNING      error: Error (Exception : Invalid status 6a80 (Unknown reason)) communicating with LedgerNanoS       [server.py:100]
Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/device/ledger.py", line 134, in sign
    result = bytearray(self.conn.exchange(bytes(apdu)))
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/ledgerblue/comm.py", line 157, in exchange
    raise CommException("Invalid status %04x (%s)" % (sw, possibleCause), sw, response)
ledgerblue.commException.CommException: Exception : Invalid status 6a80 (Unknown reason)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/server.py", line 95, in handle_connection
    reply = handler.handle(msg=msg)
            ^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/protocol.py", line 106, in handle
    reply = method(buf=buf)
            ^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/protocol.py", line 147, in sign_message
    signature = self.conn.sign(blob=blob, identity=key['identity'])
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/__init__.py", line 234, in sign
    return conn.sign_ssh_challenge(blob=blob, identity=identity)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/ssh/client.py", line 52, in sign_ssh_challenge
    return self.device.sign(blob=blob, identity=identity)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/USER/.local/lib/python3.11/site-packages/libagent/device/ledger.py", line 136, in sign
    raise interface.DeviceError(
libagent.device.interface.DeviceError: Error (Exception : Invalid status 6a80 (Unknown reason)) communicating with LedgerNanoS
[email protected]: Permission denied (publickey).
█[my-hostname][~][255]$ ledger-agent --help
[group-1] 0:USER*                                                                                                                 

[Rorschach45]

same issue here