[GUACAMOLE-1877] Disconnects over VNC on QEMU machines

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Invalid
• Affects Version/s: 1.5.3
• Component/s: guacd
• Assignee: Unassigned
• Reporter: Nick Stocchero
• Created: 04/Nov/23 17:47
• Updated: 04/Nov/23 18:23
• Resolved: 04/Nov/23 18:23

Description

I am seeing regular disconnects from a QEMU VNC server from guacd. It seems to happen mostly during the boot process (ie when uefi hands off to the OS). I've tried a locally compiled version as well as the docker version of guacd.

 

OS: Debian GNU/Linux 12 (bookworm)

QEMU version: 1:7.2+dfsg-7+deb12u2

 

Virtual Machine Definition:

    <graphics type='vnc' port='40001' autoport='no' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>

The guacd logs look like this (with log level debug)

guacd[17]: INFO:        User "@f3dbfd16-3ddf-42eb-9a49-07efdaf96134" joined connection "$779cca17-7293-4891-b13c-c9a9f153336c" (1 users now present)
guacd[17]: DEBUG:       Client is using protocol version "VERSION_1_5_0"
guacd[17]: ERROR:       Error handling message from VNC server.
guacd[17]: INFO:        Internal VNC client disconnected

I'm a little bit lost where to start. Is there a way to get more info about that " Error handling message from VNC server."

Thanks!