Hi, I would suggest checking target machine journal logs. Do you see any attempts to connect there, any errors?
сб, 5 июл. 2025 г. в 16:26, Horváth Csaba <[email protected]>: > Hi, > > The previous log was written by guacd with parameter -L debug, i only > copied from syslog. > > Now i tried again. In the below log i first connected to a VNC server > (so you can see the server is basically working) and then tried SSH, > but this time i got the message "Connected to Guacamole" and right > after the red ribbon with "Error occurred within the Guacamole > server..." > > # /usr/local/sbin/guacd -f -b 127.0.0.1 -L debug -l 4822 -p /tmp/guacd.pid > guacd[2658943]: INFO: Guacamole proxy daemon (guacd) version 1.6.0 > started > guacd[2658943]: DEBUG: Successfully bound AF_INET socket to host > 127.0.0.1, port 4822 > guacd[2658943]: INFO: Listening on host 127.0.0.1, port 4822 > guacd[2658943]: INFO: Creating new client for protocol "vnc" > guacd[2658943]: INFO: Connection ID is > "$d7c6fc92-4f29-42f3-b194-fc28b114bf77" > guacd[2659157]: DEBUG: Processing instruction: size > guacd[2659157]: DEBUG: Processing instruction: audio > guacd[2659157]: DEBUG: Processing instruction: video > guacd[2659157]: DEBUG: Processing instruction: image > guacd[2659157]: DEBUG: Processing instruction: timezone > guacd[2659157]: DEBUG: Processing instruction: name > guacd[2659157]: INFO: Cursor rendering: local > guacd[2659157]: DEBUG: Parameter "swap-red-blue" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "read-only" omitted. Using default > value of 0. > guacd[2659157]: DEBUG: Parameter "disable-server-input" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "disable-display-resize" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "color-depth" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "force-lossless" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "compress-level" omitted. Using > default value of -1. > guacd[2659157]: DEBUG: Parameter "quality-level" omitted. Using > default value of -1. > guacd[2659157]: DEBUG: Parameter "dest-port" omitted. Using default > value of 0. > guacd[2659157]: DEBUG: Parameter "encodings" omitted. Using default > value of "zrle ultra copyrect hextile zlib corre rre raw". > guacd[2659157]: DEBUG: Parameter "autoretry" omitted. Using default > value of 0. > guacd[2659157]: DEBUG: Parameter "reverse-connect" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "listen-timeout" omitted. Using > default value of 5000. > guacd[2659157]: DEBUG: Parameter "enable-sftp" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "sftp-hostname" omitted. Using > default value of "sm-g900f". > guacd[2659157]: DEBUG: Parameter "sftp-port" omitted. Using default > value of "22". > guacd[2659157]: DEBUG: Parameter "sftp-timeout" omitted. Using > default value of 10. > guacd[2659157]: DEBUG: Parameter "sftp-username" omitted. Using > default value of "". > guacd[2659157]: DEBUG: Parameter "sftp-password" omitted. Using > default value of "". > guacd[2659157]: DEBUG: Parameter "sftp-passphrase" omitted. Using > default value of "". > guacd[2659157]: DEBUG: Parameter "sftp-root-directory" omitted. > Using default value of "/". > guacd[2659157]: DEBUG: Parameter "sftp-server-alive-interval" > omitted. Using default value of 0. > guacd[2659157]: DEBUG: Parameter "sftp-disable-download" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "sftp-disable-upload" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "recording-name" omitted. Using > default value of "recording". > guacd[2659157]: DEBUG: Parameter "recording-exclude-output" > omitted. Using default value of 0. > guacd[2659157]: DEBUG: Parameter "recording-exclude-mouse" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "recording-include-keys" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "create-recording-path" omitted. > Using default value of 0. > guacd[2659157]: DEBUG: Parameter "recording-write-existing" > omitted. Using default value of 0. > guacd[2659157]: DEBUG: Parameter "disable-copy" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "clipboard-buffer-size" omitted. > Using default value of 0. > guacd[2659157]: INFO: Unspecified or invalid clipboard buffer size: > "". Using the default minimum size: 262144. > guacd[2659157]: DEBUG: Parameter "disable-paste" omitted. Using > default value of 0. > guacd[2659157]: DEBUG: Parameter "wol-send-packet" omitted. Using > default value of 0. > guacd[2659157]: INFO: User "@0edd5925-f684-44ac-b1ff-0825175da3e7" > joined connection "$d7c6fc92-4f29-42f3-b194-fc28b114bf77" (1 users now > present) > guacd[2659157]: DEBUG: Client is using protocol version "VERSION_1_5_0" > guacd[2659157]: INFO: Local system reports 4 processor(s) are available. > guacd[2659157]: INFO: Graphical updates will be encoded using 4 > worker thread(s). > guacd[2659157]: DEBUG: Screen is now initialized. > guacd[2659157]: DEBUG: Sending initial screen size to VNC server. > guacd[2659157]: DEBUG: Sending VNC display size for owner's display. > guacd[2659157]: INFO: User "@0edd5925-f684-44ac-b1ff-0825175da3e7" > disconnected (0 users remain) > guacd[2659157]: INFO: Last user of connection > "$d7c6fc92-4f29-42f3-b194-fc28b114bf77" disconnected > guacd[2659157]: DEBUG: Requesting termination of client... > guacd[2659157]: INFO: Internal VNC client disconnected > guacd[2659157]: DEBUG: Client terminated successfully. > guacd[2658943]: INFO: Connection > "$d7c6fc92-4f29-42f3-b194-fc28b114bf77" removed. > guacd[2658943]: DEBUG: Unable to request termination of client > process: No such process > guacd[2658943]: DEBUG: All child processes for connection > "$d7c6fc92-4f29-42f3-b194-fc28b114bf77" have been terminated. > guacd[2658943]: INFO: Creating new client for protocol "ssh" > guacd[2658943]: INFO: Connection ID is > "$0eb617c4-ec41-46a0-9be9-7d0705aea227" > guacd[2659316]: DEBUG: Processing instruction: size > guacd[2659316]: DEBUG: Processing instruction: audio > guacd[2659316]: DEBUG: Processing instruction: video > guacd[2659316]: DEBUG: Processing instruction: image > guacd[2659316]: DEBUG: Processing instruction: timezone > guacd[2659316]: DEBUG: Processing instruction: name > guacd[2659316]: INFO: User "@04f87cbf-6f45-4785-897f-5df0cdfd8fbc" > joined connection "�!A�" (1 users now present) > guacd[2659316]: DEBUG: Client is using protocol version "VERSION_1_5_0" > guacd[2658943]: INFO: Creating new client for protocol "ssh" > guacd[2658943]: INFO: Connection ID is > "$ad924c87-097e-4f1b-b0ab-8e3788c0a7ab" > guacd[2659508]: DEBUG: Processing instruction: size > guacd[2659508]: DEBUG: Processing instruction: audio > guacd[2659508]: DEBUG: Processing instruction: video > guacd[2659508]: DEBUG: Processing instruction: image > guacd[2659508]: DEBUG: Processing instruction: timezone > guacd[2659508]: DEBUG: Processing instruction: name > guacd[2659508]: INFO: User "@ca7f6e87-53c6-4b6b-be2c-9e28255a04d9" > joined connection "�@�" (1 users now present) > guacd[2659508]: DEBUG: Client is using protocol version "VERSION_1_5_0" > guacd[2659316]: ERROR: User is not responding. > guacd[2659316]: INFO: User "@04f87cbf-6f45-4785-897f-5df0cdfd8fbc" > disconnected (0 users remain) > guacd[2659316]: INFO: Last user of connection "�!A�" disconnected > guacd[2659316]: DEBUG: Requesting termination of client... > double free or corruption (out) > guacd[2658943]: INFO: Connection > "$0eb617c4-ec41-46a0-9be9-7d0705aea227" removed. > guacd[2658943]: DEBUG: Unable to request termination of client > process: No such process > guacd[2658943]: DEBUG: All child processes for connection > "$0eb617c4-ec41-46a0-9be9-7d0705aea227" have been terminated. > guacd[2659508]: ERROR: User is not responding. > guacd[2659508]: INFO: User "@ca7f6e87-53c6-4b6b-be2c-9e28255a04d9" > disconnected (0 users remain) > guacd[2659508]: INFO: Last user of connection "�@�" disconnected > guacd[2659508]: DEBUG: Requesting termination of client... > double free or corruption (out) > guacd[2658943]: INFO: Connection > "$ad924c87-097e-4f1b-b0ab-8e3788c0a7ab" removed. > guacd[2658943]: DEBUG: Unable to request termination of client > process: No such process > guacd[2658943]: DEBUG: All child processes for connection > "$ad924c87-097e-4f1b-b0ab-8e3788c0a7ab" have been terminated. > > Cs. > > If i run the guacd in the background, i only get the grey "Connected > to guacamole" message, and short after "Client took too long to > respond". However, the client is definitely reachable via SSH from the > same computer where Guacamole is running. > > # /usr/local/sbin/guacd -f -b 127.0.0.1 -L debug -l 4822 -p /tmp/guacd.pid > & > [1] 2665853 > root@homeserver:/home/colt# guacd[2665853]: INFO: Guacamole proxy > daemon (guacd) version 1.6.0 started > guacd[2665853]: DEBUG: Successfully bound AF_INET socket to host > 127.0.0.1, port 4822 > guacd[2665853]: INFO: Listening on host 127.0.0.1, port 4822 > guacd[2665853]: INFO: Creating new client for protocol "ssh" > guacd[2665853]: INFO: Connection ID is > "$3390f4ee-3dd3-4a80-9b85-1da09610d47f" > guacd[2666549]: DEBUG: Processing instruction: size > guacd[2666549]: DEBUG: Processing instruction: audio > guacd[2666549]: DEBUG: Processing instruction: video > guacd[2666549]: DEBUG: Processing instruction: image > guacd[2666549]: DEBUG: Processing instruction: timezone > guacd[2666549]: DEBUG: Processing instruction: name > guacd[2666549]: INFO: User "@d05d0cbb-6411-4265-bfe2-a1366b934e0b" > joined connection "��ޒ4" (1 users now present) > guacd[2666549]: DEBUG: Client is using protocol version "VERSION_1_5_0" > guacd[2666549]: ERROR: User is not responding. > guacd[2666549]: INFO: User "@d05d0cbb-6411-4265-bfe2-a1366b934e0b" > disconnected (0 users remain) > guacd[2666549]: INFO: Last user of connection "��ޒ4" disconnected > guacd[2666549]: DEBUG: Requesting termination of client... > double free or corruption (out) > guacd[2665853]: INFO: Connection > "$3390f4ee-3dd3-4a80-9b85-1da09610d47f" removed. > guacd[2665853]: DEBUG: Unable to request termination of client > process: No such process > guacd[2665853]: DEBUG: All child processes for connection > "$3390f4ee-3dd3-4a80-9b85-1da09610d47f" have been terminated. > > > This was working with Guacamole 1.5.5, also self-compiled. so i > suspect some bugs in the 1.6 > > Thanks for your support in advance :) > > Cs. > > On Sat, Jul 5, 2025 at 1:53 PM Nick Couchman <[email protected]> wrote: > > > > On Thu, Jul 3, 2025 at 9:52 AM Horváth Csaba < > [email protected]> wrote: > >> > >> Hi, > >> > >> I haven't got a working SSH connection since i upgraded from 1.5.5 to > >> 1.6. RDP and VNC is working, and SSH worked before. Now i only get a > >> "Connected to Guacamole, waiting for response" message. > >> > >> In the syslog, i have only the log pasted at the end of the mail. > >> I have built guacd from source, with the ./configure --with-rdp > >> --with-ssh2 --with-vnc command line. So SSH should be built in. System > >> is a Debian Testing. > >> > >> I really don't see where i can start troubleshooting (SSH otherwise > >> works, so Guacd can use it), so i hope someone has an idea. > >> > >> root@homeserver:~# tail -f /var/log/syslog|grep "guacd\|ssh" > >> 2025-07-03T15:40:16.745559+02:00 homeserver guacd[2175063]: Creating > >> new client for protocol "ssh" > >> 2025-07-03T15:40:16.746013+02:00 homeserver guacd[2175063]: Connection > >> ID is "$0b9c3df0-9743-469a-a9d1-7a40454b67ea" > >> 2025-07-03T15:40:16.762119+02:00 homeserver guacd[3905910]: Processing > >> instruction: size > >> 2025-07-03T15:40:16.762512+02:00 homeserver guacd[3905910]: Processing > >> instruction: audio > >> 2025-07-03T15:40:16.763606+02:00 homeserver guacd[3905910]: Processing > >> instruction: video > >> 2025-07-03T15:40:16.763820+02:00 homeserver guacd[3905910]: Processing > >> instruction: image > >> 2025-07-03T15:40:16.764127+02:00 homeserver guacd[3905910]: Processing > >> instruction: timezone > >> 2025-07-03T15:40:16.764363+02:00 homeserver guacd[3905910]: Processing > >> instruction: name > >> 2025-07-03T15:40:16.764896+02:00 homeserver guacd[3905910]: Client is > >> using protocol version "VERSION_1_5_0" > >> > > > > Can you start guacd with the "-L debug" flag and see if you get anything > more helpful from the log output? > > > > -Nick > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
