$ xpra attach ssh://test@10.88.144.78/101 --min-size=1200x800 --clipboard-direction=both --clipboard=yes --opengl=no
2021-07-29 15:18:23,012 Xpra GTK3 X11 client version 4.0.6-r28285 64-bit
2021-07-29 15:18:23,099  running on Linux ALT 9.1 Laertes
2021-07-29 15:18:23,101  window manager is 'Xfwm4'
2021-07-29 15:18:24,341 GStreamer version 1.16.1 for Python 3.7.4 64-bit
2021-07-29 15:18:25,756 Connected (version 2.0, client OpenSSH_7.9)
/usr/lib/python3/site-packages/paramiko/kex_ecdh_nist.py:39: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  m.add_string(self.Q_C.public_numbers().encode_point())
/usr/lib/python3/site-packages/paramiko/kex_ecdh_nist.py:96: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
  self.curve, Q_S_bytes
/usr/lib/python3/site-packages/paramiko/kex_ecdh_nist.py:111: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  hm.add_string(self.Q_C.public_numbers().encode_point())
2021-07-29 15:18:25,977 Warning: private key '/home/alimektor/.ssh/alimektor-basealt'
2021-07-29 15:18:25,978  this file seems to be using OpenSSH's own format
2021-07-29 15:18:25,979  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:25,979  so it can be used with the paramiko backend
2021-07-29 15:18:25,979  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:25,980 Warning: private key '/home/alimektor/.ssh/alimektor-basealt'
2021-07-29 15:18:25,980  this file seems to be using OpenSSH's own format
2021-07-29 15:18:25,980  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:25,980  so it can be used with the paramiko backend
2021-07-29 15:18:25,980  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:25,981 Warning: private key '/home/alimektor/.ssh/alimektor-basealt'
2021-07-29 15:18:25,981  this file seems to be using OpenSSH's own format
2021-07-29 15:18:25,981  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:25,982  so it can be used with the paramiko backend
2021-07-29 15:18:25,982  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:25,982 loaded Ed25519 private key from '/home/alimektor/.ssh/alimektor-basealt'
2021-07-29 15:18:25,996 Authentication (publickey) failed.
2021-07-29 15:18:25,996 SSH authentication using key '/home/alimektor/.ssh/alimektor-basealt' failed:
2021-07-29 15:18:25,997  Authentication failed.
2021-07-29 15:18:25,998 Warning: private key '/home/alimektor/.ssh/alimektor-qa-shell'
2021-07-29 15:18:25,999  this file seems to be using OpenSSH's own format
2021-07-29 15:18:25,999  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:25,999  so it can be used with the paramiko backend
2021-07-29 15:18:25,999  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,000 Warning: private key '/home/alimektor/.ssh/alimektor-qa-shell'
2021-07-29 15:18:26,001  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,001  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,001  so it can be used with the paramiko backend
2021-07-29 15:18:26,001  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,002 Warning: private key '/home/alimektor/.ssh/alimektor-qa-shell'
2021-07-29 15:18:26,003  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,004  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,004  so it can be used with the paramiko backend
2021-07-29 15:18:26,005  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,006 Warning: private key '/home/alimektor/.ssh/alimektor-qa-shell'
2021-07-29 15:18:26,006  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,006  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,007  so it can be used with the paramiko backend
2021-07-29 15:18:26,007  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,008 Error: cannot load private key '/home/alimektor/.ssh/alimektor-qa-shell'
2021-07-29 15:18:26,008 Warning: private key '/home/alimektor/.ssh/test_ed25519'
2021-07-29 15:18:26,009  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,009  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,009  so it can be used with the paramiko backend
2021-07-29 15:18:26,009  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,009 Warning: private key '/home/alimektor/.ssh/test_ed25519'
2021-07-29 15:18:26,010  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,010  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,010  so it can be used with the paramiko backend
2021-07-29 15:18:26,010  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,011 Warning: private key '/home/alimektor/.ssh/test_ed25519'
2021-07-29 15:18:26,011  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,011  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,011  so it can be used with the paramiko backend
2021-07-29 15:18:26,011  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,012 Warning: private key '/home/alimektor/.ssh/test_ed25519'
2021-07-29 15:18:26,012  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,012  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,012  so it can be used with the paramiko backend
2021-07-29 15:18:26,012  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,013 Error: cannot load private key '/home/alimektor/.ssh/test_ed25519'
2021-07-29 15:18:26,013 Warning: private key '/home/alimektor/.ssh/alimektor-github'
2021-07-29 15:18:26,013  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,014  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,014  so it can be used with the paramiko backend
2021-07-29 15:18:26,014  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,014 Warning: private key '/home/alimektor/.ssh/alimektor-github'
2021-07-29 15:18:26,014  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,015  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,015  so it can be used with the paramiko backend
2021-07-29 15:18:26,015  or switch to the OpenSSH backend with '--ssh=ssh'
2021-07-29 15:18:26,016 Warning: private key '/home/alimektor/.ssh/alimektor-github'
2021-07-29 15:18:26,017  this file seems to be using OpenSSH's own format
2021-07-29 15:18:26,017  please convert it to something more standard (ie: PEM)
2021-07-29 15:18:26,018  so it can be used with the paramiko backend
2021-07-29 15:18:26,018  or switch to the OpenSSH backend with '--ssh=ssh'
please enter the passphrase for /home/alimektor/.ssh/alimektor-github:
2021-07-29 15:18:28,073 Error: cannot load private key '/home/alimektor/.ssh/alimektor-github'
2021-07-29 15:18:28,105 SSH password authentication failed:
2021-07-29 15:18:28,105  ('Bad authentication type', ['publickey', 'password']) (allowed_types=['publickey', 'password'])
please enter the SSH password for test@10.88.144.78:
2021-07-29 15:18:29,548 Authentication (password) successful!
2021-07-29 15:18:29,679  keyboard settings: rules=evdev, model=pc105, layout=us,ru
2021-07-29 15:18:30,296  desktop size is 3840x1080 with 1 screen:
2021-07-29 15:18:30,297   :0.0 (1042x293 mm - DPI: 93x93) workarea: 3840x1053 at 0x27
2021-07-29 15:18:30,298     AOC HDMI-1 1920x1080 (521x293 mm - DPI: 93x93)
2021-07-29 15:18:30,298     ACI DP-2 1920x1080 at 1920x0 (531x299 mm - DPI: 91x91)
2021-07-29 15:18:31,184 Error: failed to receive anything, not an xpra server?
2021-07-29 15:18:31,184   could also be the wrong protocol, username, password or port
2021-07-29 15:18:31,184   or the session was not found
2021-07-29 15:18:31,184 Connection lost