What is the problem?
I have been using OctoPi happily for the past 3 weeks. Suddenly one day it would not connect to the printer and I get the dreaded Offline (Error: No more candidates to test, and no working port/baudrate combination detected.) error.
In the serial log below I see a line:
2021-03-06 17:58:32,565 - Performing autodetection with 0 port/baudrate candidates:
But from other serial logs I think the 0 is the issue??
What did you already try to solve it?
I have started with a fresh install of Octopi. Installed the 12v to 5v 3amp buck that I have been meaning to fit and tried a variety of other cables. I have also tried deleting the ttyAMA0 as suggested on another thread.
Have you tried running in safe mode?
Yes. It made no difference.
Did running in safe mode solve the problem?
No
Complete Logs
Octoprint Log:
******************************************************************************
2021-03-06 17:45:50,262 - octoprint.startup - INFO - Starting OctoPrint 1.5.2
2021-03-06 17:45:50,263 - octoprint.startup - INFO - ******************************************************************************
2021-03-06 17:45:56,853 - octoprint.util.connectivity.connectivity_checker - INFO - Connectivity state is currently: offline
2021-03-06 17:45:56,853 - octoprint.util.connectivity.connectivity_checker - INFO - Connecting to 8.8.8.8:53 is not working
2021-03-06 17:45:56,854 - octoprint.util.connectivity.connectivity_checker - INFO - Resolving octoprint.org is not working
2021-03-06 17:45:56,864 - octoprint.startup - INFO - We don't appear to be online, not fetching plugin blacklist
2021-03-06 17:45:59,830 - octoprint.plugin.core - INFO - Loading plugins from /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins, /home/pi/.octoprint/plugins and installed plugin packages...
2021-03-06 17:46:01,888 - octoprint.plugin.core - INFO - Found 17 plugin(s) providing 17 mixin implementations, 34 hook handlers
2021-03-06 17:46:02,054 - octoprint.server.heartbeat - INFO - Starting server heartbeat, 900.0s interval
2021-03-06 17:46:02,079 - octoprint.server - INFO - Intermediary server started
2021-03-06 17:46:02,115 - octoprint.filemanager.storage - INFO - Initializing the file metadata for /home/pi/.octoprint/uploads...
2021-03-06 17:46:02,117 - octoprint.filemanager.storage - INFO - ... file metadata for /home/pi/.octoprint/uploads initialized successfully.
2021-03-06 17:46:02,121 - octoprint.server - INFO - Added new permission from plugin action_command_notification: PLUGIN_ACTION_COMMAND_NOTIFICATION_SHOW (needs: "Need(method='role', value='plugin_action_command_notification_show')")
2021-03-06 17:46:02,122 - octoprint.server - INFO - Added new permission from plugin action_command_notification: PLUGIN_ACTION_COMMAND_NOTIFICATION_CLEAR (needs: "Need(method='role', value='plugin_action_command_notification_clear')")
2021-03-06 17:46:02,122 - octoprint.server - INFO - Added new permission from plugin action_command_prompt: PLUGIN_ACTION_COMMAND_PROMPT_INTERACT (needs: "Need(method='role', value='plugin_action_command_prompt_interact')")
2021-03-06 17:46:02,123 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_READ (needs: "Need(method='role', value='plugin_announcements_read')")
2021-03-06 17:46:02,124 - octoprint.server - INFO - Added new permission from plugin announcements: PLUGIN_ANNOUNCEMENTS_MANAGE (needs: "Need(method='role', value='plugin_announcements_manage'), Need(method='role', value='plugin_announcements_read')")
2021-03-06 17:46:02,125 - octoprint.server - INFO - Added new permission from plugin appkeys: PLUGIN_APPKEYS_ADMIN (needs: "Need(method='role', value='plugin_appkeys_admin')")
2021-03-06 17:46:02,126 - octoprint.server - INFO - Added new permission from plugin backup: PLUGIN_BACKUP_ACCESS (needs: "Need(method='role', value='plugin_backup_access')")
2021-03-06 17:46:02,127 - octoprint.server - INFO - Added new permission from plugin firmware_check: PLUGIN_FIRMWARE_CHECK_DISPLAY (needs: "Need(method='role', value='plugin_firmware_check_display')")
2021-03-06 17:46:02,128 - octoprint.server - INFO - Added new permission from plugin logging: PLUGIN_LOGGING_MANAGE (needs: "Need(method='role', value='plugin_logging_manage')")
2021-03-06 17:46:02,133 - octoprint.server - INFO - Added new permission from plugin pi_support: PLUGIN_PI_SUPPORT_STATUS (needs: "Need(method='role', value='plugin_pi_support_check')")
2021-03-06 17:46:02,134 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_MANAGE (needs: "Need(method='role', value='plugin_pluginmanager_manage')")
2021-03-06 17:46:02,136 - octoprint.server - INFO - Added new permission from plugin pluginmanager: PLUGIN_PLUGINMANAGER_INSTALL (needs: "Need(method='role', value='plugin_pluginmanager_manage'), Need(method='role', value='plugin_pluginmanager_install')")
2021-03-06 17:46:02,138 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CHECK (needs: "Need(method='role', value='plugin_softwareupdate_check')")
2021-03-06 17:46:02,139 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_UPDATE (needs: "Need(method='role', value='plugin_softwareupdate_update')")
2021-03-06 17:46:02,141 - octoprint.server - INFO - Added new permission from plugin softwareupdate: PLUGIN_SOFTWAREUPDATE_CONFIGURE (needs: "Need(method='role', value='plugin_softwareupdate_configure')")
2021-03-06 17:46:03,271 - octoprint.util.pip - INFO - Using "/home/pi/oprint/bin/python3 -m pip" as command to invoke pip
2021-03-06 17:46:04,119 - octoprint.util.pip - INFO - Version of pip is 20.3.3
2021-03-06 17:46:04,121 - octoprint.util.pip - INFO - pip installs to /home/pi/oprint/lib/python3.7/site-packages (writable -> yes), --user flag needed -> no, virtual env -> yes
2021-03-06 17:46:04,122 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-03-06 17:46:04,190 - octoprint.plugins.softwareupdate - INFO - Loaded version cache from disk
2021-03-06 17:46:04,212 - octoprint.plugin.core - INFO - Initialized 17 plugin implementation(s)
2021-03-06 17:46:04,225 - octoprint.plugin.core - INFO - 17 plugin(s) registered with the system:
| Action Command Notification Support (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/action_command_notification
| Action Command Prompt Support (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/action_command_prompt
| Announcement Plugin (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/announcements
| Anonymous Usage Tracking (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/tracking
| Application Keys Plugin (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/appkeys
| Backup & Restore (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/backup
| Core Wizard (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/corewizard
| Discovery (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/discovery
| Error Tracking (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/errortracking
| File Check (2020.8.7) (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint_file_check
| Firmware Check (2020.9.23) (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint_firmware_check
| GCode Viewer (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/gcodeviewer
| Logging (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/logging
| Pi Support Plugin (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/pi_support
| Plugin Manager (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/pluginmanager
| Software Update (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/softwareupdate
| Virtual Printer (bundled) = /home/pi/oprint/lib/python3.7/site-packages/octoprint/plugins/virtual_printer
Prefix legend: ! = disabled, # = blacklisted, * = incompatible
2021-03-06 17:46:04,256 - octoprint.environment - INFO - Detected environment is Python 3.7.3 under Linux (linux). Details:
| hardware:
| cores: 4
| freq: 1400.0
| ram: 915718144
| os:
| bits: 32
| id: linux
| platform: linux
| plugins:
| pi_support:
| model: Raspberry Pi 3 Model B Plus Rev 1.3
| octopi_version: 0.18.0
| throttle_state: '0x0'
| python:
| pip: 20.3.3
| version: 3.7.3
| virtualenv: /home/pi/oprint
2021-03-06 17:46:04,269 - octoprint.server - INFO - Reset webasset folder /home/pi/.octoprint/generated/webassets...
2021-03-06 17:46:04,287 - octoprint.server - INFO - Reset webasset folder /home/pi/.octoprint/generated/.webassets-cache...
2021-03-06 17:46:05,097 - octoprint.server - INFO - Shutting down intermediary server...
2021-03-06 17:46:05,593 - octoprint.server - INFO - Intermediary server shut down
2021-03-06 17:46:05,595 - octoprint.events - INFO - Processing startup event, this is our first event
2021-03-06 17:46:05,596 - octoprint.events - INFO - Adding 1 events to queue that were held back before startup event
2021-03-06 17:46:05,600 - octoprint.filemanager - INFO - Adding backlog items from all storage types to analysis queue...
2021-03-06 17:46:05,603 - octoprint.filemanager - INFO - Added 0 items from storage type "local" to analysis queue
2021-03-06 17:46:05,605 - octoprint.server.util.watchdog - INFO - Running initial scan on watched folder...
2021-03-06 17:46:05,608 - octoprint.server.util.watchdog - INFO - ... initial scan done.
2021-03-06 17:46:06,422 - octoprint.plugins.discovery - INFO - Registered 'OctoPrint instance on cr10._http._tcp.local.' for _http._tcp.local.
2021-03-06 17:46:07,237 - octoprint.plugins.discovery - INFO - Registered 'OctoPrint instance on cr10._octoprint._tcp.local.' for _octoprint._tcp.local.
2021-03-06 17:46:07,249 - octoprint.plugins.discovery - INFO - Registered OctoPrint instance on cr10 for SSDP
2021-03-06 17:46:07,264 - octoprint.server - INFO - Listening on http://127.0.0.1:5000
2021-03-06 17:46:07,312 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-03-06 17:46:08,270 - octoprint.util.pip - INFO - Using "/home/pi/oprint/bin/python3 -m pip" as command to invoke pip
2021-03-06 17:46:08,276 - octoprint.util.pip - INFO - pip installs to /home/pi/oprint/lib/python3.7/site-packages (writable -> yes), --user flag needed -> no, virtual env -> yes
2021-03-06 17:46:08,307 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-03-06 17:46:08,381 - octoprint.plugins.softwareupdate - INFO - Minimum free storage across all update relevant locations is 11.6GB. That is considered sufficient for updating.
2021-03-06 17:46:08,382 - octoprint.plugins.softwareupdate - INFO - Not fetching check overlays, we are offline
2021-03-06 17:46:09,067 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2021-03-06 17:46:09,769 - octoprint.util.connectivity.connectivity_checker - INFO - Connectivity changed from offline to online
2021-03-06 17:46:09,888 - octoprint.plugins.pluginmanager - INFO - Loaded plugin repository data from disk, was still valid
2021-03-06 17:46:11,549 - octoprint.plugins.pluginmanager - INFO - Loaded notice data from disk, was still valid
2021-03-06 17:46:11,683 - octoprint.util.pip - INFO - Using "/home/pi/oprint/bin/python3 -m pip" as command to invoke pip
2021-03-06 17:46:11,685 - octoprint.util.pip - INFO - pip installs to /home/pi/oprint/lib/python3.7/site-packages (writable -> yes), --user flag needed -> no, virtual env -> yes
2021-03-06 17:46:11,685 - octoprint.util.pip - INFO - ==> pip ok -> yes
2021-03-06 17:46:11,715 - octoprint.plugins.softwareupdate - INFO - Saved version cache to disk
2021-03-06 17:46:11,849 - octoprint.server.preemptive_cache - INFO - Preemptively caching / (ui _default) for {'base_url': 'http://192.168.0.20/', 'path': '/', 'query_string': 'l10n=en'}
2021-03-06 17:46:11,979 - octoprint.plugins.tracking - INFO - Sent tracking event ping, payload: {'octoprint_uptime': 10}
2021-03-06 17:46:13,304 - octoprint.plugins.tracking - INFO - Sent tracking event pong, payload: {'version': '1.5.2', 'os': 'linux', 'bits': 32, 'python': '3.7.3', 'pip': '20.3.3', 'cores': 4, 'freq': 1400.0, 'ram': 915718144, 'pi_model': 'Raspberry Pi 3 Model B Plus Rev 1.3', 'octopi_version': '0.18.0', 'plugins': ''}
2021-03-06 17:46:13,626 - octoprint.plugins.tracking - INFO - Sent tracking event startup, payload: {'version': '1.5.2', 'os': 'linux', 'bits': 32, 'python': '3.7.3', 'pip': '20.3.3', 'cores': 4, 'freq': 1400.0, 'ram': 915718144, 'pi_model': 'Raspberry Pi 3 Model B Plus Rev 1.3', 'octopi_version': '0.18.0'}
2021-03-06 17:48:40,102 - octoprint.server.preemptive_cache - INFO - ... done in 10.77s
2021-03-06 17:48:40,832 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.11
2021-03-06 17:48:41,134 - tornado.access - WARNING - 403 GET /api/settings (::ffff:192.168.0.11) 128.43ms
2021-03-06 17:48:41,299 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.11
2021-03-06 17:48:41,741 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.11
2021-03-06 17:48:44,761 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:48:44,765 - octoprint.server.api - INFO - Actively logging in user aerotec from ::ffff:192.168.0.11
2021-03-06 17:48:44,834 - octoprint.server.util.flask - INFO - Passively logging in user aerotec from ::ffff:192.168.0.11
2021-03-06 17:48:46,247 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:48:46,438 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.11
2021-03-06 17:48:47,666 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.11
2021-03-06 17:48:47,711 - octoprint.server.util.flask - INFO - Passively logging in user aerotec from ::ffff:192.168.0.11
2021-03-06 17:48:47,712 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:48:51,300 - octoprint.server.util.sockjs - INFO - User aerotec logged in on the socket from client ::ffff:192.168.0.11
2021-03-06 17:48:57,390 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:48:57,424 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:48:57,424 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:48:57,426 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
2021-03-06 17:48:57,466 - octoprint.plugins.action_command_notification - INFO - Notifications cleared
2021-03-06 17:48:57,788 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect, payload: {'commerror_text': 'No more candidates to test, and no working port/baudrate combination detected.'}
2021-03-06 17:49:32,345 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:49:32,383 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:49:32,384 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:49:32,385 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
2021-03-06 17:49:32,421 - octoprint.plugins.action_command_notification - INFO - Notifications cleared
2021-03-06 17:49:32,797 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect, payload: {'commerror_text': 'No more candidates to test, and no working port/baudrate combination detected.'}
2021-03-06 17:50:03,399 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.12
2021-03-06 17:50:03,432 - octoprint.server.util.flask - INFO - Passively logging in user aerotec from ::ffff:192.168.0.12
2021-03-06 17:50:03,436 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:50:04,928 - octoprint.server.util.sockjs - INFO - User aerotec logged in on the socket from client ::ffff:192.168.0.12
2021-03-06 17:50:07,564 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:50:07,610 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:50:07,610 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:50:07,611 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
2021-03-06 17:50:07,654 - octoprint.plugins.action_command_notification - INFO - Notifications cleared
2021-03-06 17:50:07,925 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect, payload: {'commerror_text': 'No more candidates to test, and no working port/baudrate combination detected.'}
2021-03-06 17:50:10,094 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:50:10,128 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:50:10,128 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:50:10,130 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
2021-03-06 17:50:10,181 - octoprint.plugins.action_command_notification - INFO - Notifications cleared
2021-03-06 17:50:10,402 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect, payload: {'commerror_text': 'No more candidates to test, and no working port/baudrate combination detected.'}
2021-03-06 17:50:56,330 - octoprint.server.util.flask - INFO - Passively logging in user aerotec from ::ffff:192.168.0.12
2021-03-06 17:50:56,331 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:50:56,449 - octoprint.server.util.sockjs - INFO - Client connection closed: ::ffff:192.168.0.12
2021-03-06 17:50:57,177 - octoprint.server.util.sockjs - INFO - New connection from client: ::ffff:192.168.0.12
2021-03-06 17:50:57,220 - octoprint.server.util.flask - INFO - Passively logging in user aerotec from ::ffff:192.168.0.12
2021-03-06 17:50:57,221 - octoprint.access.users - INFO - Logged in user: aerotec
2021-03-06 17:50:58,842 - octoprint.server.util.sockjs - INFO - User aerotec logged in on the socket from client ::ffff:192.168.0.12
2021-03-06 17:51:01,051 - octoprint.util.comm - INFO - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:51:01,097 - octoprint.util.comm - INFO - Serial detection: Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:51:01,097 - octoprint.util.comm - INFO - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:51:01,099 - octoprint.util.comm - INFO - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
2021-03-06 17:51:01,156 - octoprint.plugins.action_command_notification - INFO - Notifications cleared
2021-03-06 17:51:01,390 - octoprint.plugins.tracking - INFO - Sent tracking event commerror_autodetect, payload: {'commerror_text': 'No more candidates to test, and no working port/baudrate combination detected.'}
Serial Log:
2021-03-06 17:54:05,995 - serial.log is currently not enabled, you can enable it via Settings > Serial Connection > Log communication to serial.log
2021-03-06 17:58:29,720 - Enabling serial logging
2021-03-06 17:58:32,517 - Changing monitoring state from "Offline" to "Detecting serial connection"
2021-03-06 17:58:32,565 - Performing autodetection with 0 port/baudrate candidates:
2021-03-06 17:58:32,565 - Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
2021-03-06 17:58:32,567 - Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"
WRITE HERE
Additional information about your setup
OctoPrint 1.5.3
OctoPi 0.18.0
Creality CR10 V2
Firmware: Original firmware
Chrome Browser: 89.0.4389.82
Operating system: Windows 10