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A new and bizarre issue has emerged on my Linux Mint server that seems specific to my Ender 3 and OctoPrint. Every night at midnight, regardless of whether a print is running or not, the USB connection to the Ender fails and restarts. (See screenshot from my Telegram OctoPrint plugin.) I’ve tried setting usb.autosuspend to -1 in GRUB, but that doesn’t seem to help. I’m completely stumped and could use some advice. The failures are far too scheduled and predictable to be a random hardware failure. A relevant chunk of /var/log/syslog is included below for reference. May 5 00:00:03 borgcube systemd[1]: logrotate.service: Succeeded. May 5 00:00:03 borgcube systemd[1]: Finished Rotate log files. May 5 00:00:03 borgcube kernel: [93921.837884] usb 1-5.4: new full-speed USB device number 9 us ing xhci_hcd May 5 00:00:03 borgcube systemd[1]: man-db.service: Succeeded. May 5 00:00:03 borgcube systemd[1]: Finished Daily man-db regeneration. May 5 00:00:03 borgcube kernel: [93922.059024] usb 1-5.4: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.63 May 5 00:00:03 borgcube kernel: [93922.059026] usb 1-5.4: New USB device strings: Mfr=0, Produc t=2, SerialNumber=0 May 5 00:00:03 borgcube kernel: [93922.059027] usb 1-5.4: Product: USB2.0-Serial May 5 00:00:03 borgcube kernel: [93922.066323] ch341 1-5.4:1.0: ch341-uart converter detected May 5 00:00:03 borgcube kernel: [93922.066896] usb 1-5.4: ch341-uart converter now attached to ttyUSB0 May 5 00:00:03 borgcube mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:1 4.0/usb1/1-5/1-5.4" May 5 00:00:03 borgcube mtp-probe: bus: 1, device: 9 was not an MTP device May 5 00:00:03 borgcube snapd[1104]: hotplug.go:200: hotplug device add event ignored, enable e xperimental.hotplug May 5 00:00:03 borgcube mtp-probe: checking bus 1, device 9: "/sys/devices/pci0000:00/0000:00:1 4.0/usb1/1-5/1-5.4" May 5 00:00:04 borgcube mtp-probe: bus: 1, device: 9 was not an MTP device
I think the answer is no, but I have an arlo security camera kicking around (arlo indoor essential camera). There's not a simple way to hack this into something that would work with octoprint is there?
octoprint.org
The first bugfix release for the 1.9.0 version. Changelog: https://github.com/OctoPrint/OctoPrint/releases/tag/1.9.1
www.youtube.com
The newest episode of OctoPrint On Air, which was recorded on June 15th - OctoPrint 1.9.0 - The new camera stack - Work towards 1.9.1 and 1.10.0 - Brainstorming on the format of OctoPrint on Air Full contents with jump marks available in the YouTube description. You can find all public past episodes in the [OctoPrint On Air Playlist](https://www.youtube.com/playlist?list=PL9j2DtsIPVkOFIMRrnnbXsnXtQmwj1IId).