Wir benutzen einen zweiten Arbeitsplatz per tigervnc. Seit Dienstag gibt es keine Verbindung mehr. Hier als Beispiel eine Verbindung (innerhalb desselben PC):
xxx@macbeth:~> vncviewer macbeth:1
TigerVNC v1.16.1
Copyright (C) 1999-2026 TigerVNC team and many others (see README.rst)
See https://www.tigervnc.org for information on TigerVNC.
Sun Sep 20 07:52:42 2026
DecodeManager: Detected 12 CPU core(s)
DecodeManager: Creating 4 decoder thread(s)
CConn: Verbunden mit Rechner macbeth, Port 5901
CConnection: Server supports RFB protocol version 3.8
CConnection: Using RFB protocol version 3.8
CConnection: Choosing security type VeNCrypt(19)
CVeNCrypt: Choosing security type X509None (260)
TLS: Could not load user specified certificate authority
TLS: Could not load user specified certificate revocation list
TLSSocket: TLS Handshake failed: Peer has terminated the connection
TLSSocket:
CConn: TLS Handshake failed: Peer has terminated the connection (-328)
DecodeManager: Total: 0 rects, 0 pixels
DecodeManager: 0 B (1:-nan ratio)
Fontconfig warning: using without calling FcInit()
Im Journal finde ich eine Veränderung von Montag zu Dienstag:
macbeth:~ # journalctl --since=2026-09-12 --until=2026-09-17| grep -A5 "SVeNCrypt: Client requests security type"
Sep 12 17:17:52 macbeth Xvnc[122695]: SVeNCrypt: Client requests security type X509None (260)
Sep 12 17:17:52 macbeth display-manager[122705]: Error opening display!
Sep 12 17:17:52 macbeth display-manager[122706]: /usr/bin/xrdb: Can't open display ''
Sep 12 17:17:52 macbeth display-manager[122707]: /usr/bin/xset: unable to open display ""
Sep 12 17:17:52 macbeth display-manager[122708]: /usr/bin/xmodmap: unable to open display ''
Sep 12 17:17:52 macbeth systemd-logind[856]: New session '27' of user 'lightdm' with class 'greeter' and type 'x11'.
--
Sep 13 16:42:41 macbeth Xvnc[84730]: SVeNCrypt: Client requests security type X509None (260)
Sep 13 16:42:41 macbeth display-manager[84740]: Error opening display!
Sep 13 16:42:41 macbeth display-manager[84741]: /usr/bin/xrdb: Can't open display ''
Sep 13 16:42:41 macbeth display-manager[84742]: /usr/bin/xset: unable to open display ""
Sep 13 16:42:41 macbeth display-manager[84743]: /usr/bin/xmodmap: unable to open display ''
Sep 13 16:42:41 macbeth systemd-logind[855]: New session '17' of user 'lightdm' with class 'greeter' and type 'x11'.
--
Sep 14 07:50:17 macbeth Xvnc[25449]: SVeNCrypt: Client requests security type X509None (260)
Sep 14 07:50:17 macbeth display-manager[25459]: Error opening display!
Sep 14 07:50:17 macbeth display-manager[25460]: /usr/bin/xrdb: Can't open display ''
Sep 14 07:50:17 macbeth display-manager[25461]: /usr/bin/xset: unable to open display ""
Sep 14 07:50:17 macbeth display-manager[25462]: /usr/bin/xmodmap: unable to open display ''
Sep 14 07:50:17 macbeth systemd-logind[855]: New session '6' of user 'lightdm' with class 'greeter' and type 'x11'.
--
Sep 15 14:43:40 macbeth Xvnc[76664]: SVeNCrypt: Client requests security type X509None (260)
Sep 15 14:43:40 macbeth display-manager[1226]: Starting service lightdm
Sep 15 14:43:40 macbeth display-manager[76672]: Error opening display!
Sep 15 14:43:40 macbeth Xvnc[76664]: VNCSConnST: Closing [2003:c4:1733:8300:3ad5:47ff:fe26:8c50]::56340: Server shutdown
Sep 15 14:43:40 macbeth Xvnc[76664]: EncodeManager: Framebuffer updates: 0
Sep 15 14:43:40 macbeth Xvnc[76664]: EncodeManager: Total: 0 rects, 0 pixels
--
Sep 15 14:44:20 macbeth Xvnc[76690]: SVeNCrypt: Client requests security type X509None (260)
Sep 15 14:44:20 macbeth display-manager[76698]: Error opening display!
Sep 15 14:44:20 macbeth Xvnc[76690]: VNCSConnST: Closing [2003:c4:1733:8300:3ad5:47ff:fe26:8c50]::47226: Server shutdown
Sep 15 14:44:20 macbeth Xvnc[76690]: EncodeManager: Framebuffer updates: 0
Sep 15 14:44:20 macbeth Xvnc[76690]: EncodeManager: Total: 0 rects, 0 pixels
Sep 15 14:44:20 macbeth Xvnc[76690]: EncodeManager: 0 B (1:-nan ratio)
--
Sep 16 15:26:18 macbeth Xvnc[59790]: SVeNCrypt: Client requests security type X509None (260)
Sep 16 15:26:19 macbeth display-manager[1198]: Starting service lightdm
Sep 16 15:26:19 macbeth display-manager[59798]: Error opening display!
Sep 16 15:26:19 macbeth Xvnc[59790]: VNCSConnST: Closing [2003:c4:1733:8300:3ad5:47ff:fe26:8c50]::42218: Server shutdown
Sep 16 15:26:19 macbeth Xvnc[59790]: EncodeManager: Framebuffer updates: 0
Sep 16 15:26:19 macbeth Xvnc[59790]: EncodeManager: Total: 0 rects, 0 pixels
--
Sep 16 16:13:34 macbeth Xvnc[66849]: SVeNCrypt: Client requests security type X509None (260)
Sep 16 16:13:34 macbeth display-manager[66857]: Error opening display!
Sep 16 16:13:34 macbeth Xvnc[66849]: VNCSConnST: Closing [2003:c4:1733:8300:3ad5:47ff:fe26:8c50]::36170: Server shutdown
Sep 16 16:13:34 macbeth Xvnc[66849]: EncodeManager: Framebuffer updates: 0
Sep 16 16:13:34 macbeth Xvnc[66849]: EncodeManager: Total: 0 rects, 0 pixels
Sep 16 16:13:34 macbeth Xvnc[66849]: EncodeManager: 0 B (1:-nan ratio)
--
Sep 16 16:13:55 macbeth Xvnc[66866]: SVeNCrypt: Client requests security type X509None (260)
Sep 16 16:13:55 macbeth display-manager[66874]: Error opening display!
Sep 16 16:13:55 macbeth Xvnc[66866]: VNCSConnST: Closing [2003:c4:1733:8300:3ad5:47ff:fe26:8c50]::39630: Server shutdown
Sep 16 16:13:55 macbeth Xvnc[66866]: EncodeManager: Framebuffer updates: 0
Sep 16 16:13:55 macbeth Xvnc[66866]: EncodeManager: Total: 0 rects, 0 pixels
Sep 16 16:13:55 macbeth Xvnc[66866]: EncodeManager: 0 B (1:-nan ratio)
...
Inzwischen benutze ich mit einer alten Grafikkarte und langen Kabeln Multi-Seat für den zweiten Arbeitsplatz … aber für weniger alltägliche Zwecke würde ich gern einen funktionierenden Tigervnc haben. Wo kann ich jetzt weiter suchen?