Thanks ！ My vnc server is tigervnc-server .
cuihx 在 2020-02-26 01:36:04，"Nick Couchman" <[email protected]> 写道： On Mon, Feb 24, 2020 at 2:51 AM 崔** <[email protected]> wrote: Hi everyone: I connected a VM(CentOS7) with vnc through guacamole。It's always black and reconnected every once in a while。 guacammole log : [http-nio-8080-exec-1036] INFO o.a.g.tunnel.TunnelRequestService - User "admin" disconnected from connection "ab7a7103-da10-4f50-af48-29dba38a0ef1". Duration: 207012 milliseconds vnc server log: Mon Feb 24 11:04:45 2020 Connections: closed: 172.171.82.9::43972 (readTLS: (unknown error code) (49)) EncodeManager: Framebuffer updates: 4505 EncodeManager: CopyRect: EncodeManager: Copies: 3 rects, 1.24907 Mpixels EncodeManager: 48 B (1:104090 ratio) EncodeManager: RRE: EncodeManager: Solid: 2.332 krects, 4.45255 Mpixels EncodeManager: 45.5469 KiB (1:382.465 ratio) EncodeManager: ZRLE: EncodeManager: Bitmap RLE: 551 rects, 392.263 kpixels EncodeManager: 16.8242 KiB (1:91.4595 ratio) EncodeManager: Indexed RLE: 1.254 krects, 9.85629 Mpixels EncodeManager: 608.06 KiB (1:63.3422 ratio) EncodeManager: Full Colour: 8.059 krects, 93.0738 Mpixels EncodeManager: 18.9366 MiB (1:18.7542 ratio) EncodeManager: Total: 12.199 krects, 109.024 Mpixels EncodeManager: 19.5914 MiB (1:21.2355 ratio) TLS: TLS session wasn't terminated gracefully ComparingUpdateTracker: 282.043 Mpixels in / 113.367 Mpixels out ComparingUpdateTracker: (1:2.48788 ratio) Mon Feb 24 11:04:50 2020 Connections: accepted: 172.171.82.9::32854 SConnection: Client needs protocol version 3.8 SConnection: Client requests security type VeNCrypt(19) SVeNCrypt: Client requests security type TLSVnc (258) Mon Feb 24 11:04:52 2020 VNCSConnST: Server default pixel format depth 24 (32bpp) little-endian rgb888 VNCSConnST: Client pixel format depth 24 (32bpp) little-endian rgb888 A couple of possible things... - What VNC server are you using? It's possible that it is using an incompatible VNC (RFB) protocol to try to communicate with the client, something that Guacamole doesn't support. - If you're running CentOS 7 you may be hitting this bug: https://issues.apache.org/jira/browse/GUACAMOLE-414. It requires a certain version of libvncclient for the fix to work, and I don't think CentOS7 includes that version, so you may have to build/update it manually. -Nick
