Heute nach mehreren Tagen waren alle Zigbee-Geräte wieder offline 
:
Apr 29 05:17:01 pve CRON[3123508]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Apr 29 05:17:01 pve CRON[3123509]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)
Apr 29 05:17:01 pve CRON[3123508]: pam_unix(cron:session): session closed for user root
Apr 29 05:26:26 pve pvedaemon[3030807]: <root@pam> successful auth for user 'HomeAssistantUser@pve'
Apr 29 06:17:01 pve CRON[3136694]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Apr 29 06:17:01 pve CRON[3136695]: (root) CMD (cd / && run-parts --report /etc/cron.hourly)
Apr 29 06:17:01 pve CRON[3136694]: pam_unix(cron:session): session closed for user root
Apr 29 06:22:44 pve kernel: usb usb1-port5: disabled by hub (EMI?), re-enabling...
Apr 29 06:22:44 pve kernel: usb 1-5: USB disconnect, device number 13
Apr 29 06:22:44 pve QEMU[2441113]: kvm: libusb_release_interface: -4 [NO_DEVICE]
Apr 29 06:22:44 pve QEMU[2441113]: kvm: libusb_release_interface: -4 [NO_DEVICE]
Apr 29 06:22:44 pve kernel: usb 1-5: new full-speed USB device number 14 using xhci_hcd
Apr 29 06:22:44 pve kernel: usb 1-5: New USB device found, idVendor=1cf1, idProduct=0030, bcdDevice= 1.00
Apr 29 06:22:44 pve kernel: usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 29 06:22:44 pve kernel: usb 1-5: Product: ConBee II
Apr 29 06:22:44 pve kernel: usb 1-5: Manufacturer: dresden elektronik ingenieurtechnik GmbH
Apr 29 06:22:44 pve kernel: cdc_acm 1-5:1.0: ttyACM0: USB ACM device
Apr 29 06:23:17 pve kernel: usb 1-5: USB disconnect, device number 14
Apr 29 06:23:17 pve kernel: usb 1-5: new full-speed USB device number 15 using xhci_hcd
Apr 29 06:23:17 pve kernel: usb 1-5: New USB device found, idVendor=1cf1, idProduct=0030, bcdDevice= 1.00
Apr 29 06:23:17 pve kernel: usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 29 06:23:17 pve kernel: usb 1-5: Product: ConBee II
Apr 29 06:23:17 pve kernel: usb 1-5: Manufacturer: dresden elektronik ingenieurtechnik GmbH
Apr 29 06:23:17 pve kernel: cdc_acm 1-5:1.0: ttyACM0: USB ACM device
Apr 29 06:23:21 pve kernel: usb 1-5: USB disconnect, device number 15
Apr 29 06:23:21 pve kernel: usb 1-5: new full-speed USB device number 16 using xhci_hcd
Apr 29 06:23:21 pve kernel: usb 1-5: New USB device found, idVendor=1cf1, idProduct=0030, bcdDevice= 1.00
Apr 29 06:23:21 pve kernel: usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Apr 29 06:23:21 pve kernel: usb 1-5: Product: ConBee II
Apr 29 06:23:21 pve kernel: usb 1-5: Manufacturer: dresden elektronik ingenieurtechnik GmbH
Apr 29 06:23:21 pve kernel: cdc_acm 1-5:1.0: ttyACM0: USB ACM device
Apr 29 06:25:01 pve CRON[3138469]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Apr 29 06:25:01 pve CRON[3138470]: (root) CMD (test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.daily; })
Apr 29 06:25:01 pve CRON[3138469]: pam_unix(cron:session): session closed for user root
Apr 29 06:26:26 pve pvedaemon[3030807]: <root@pam> successful auth for user 'HomeAssistantUser@pve'
Hat jemand noch eine Idee? 
Eigentlich ist der Engergiesparmodus aus:
root@pve:~# cat /sys/module/usbcore/parameters/autosuspend
-1
Ich habe nur den Stick an einer USB-Verlängerung am Proxmox (Lenovo ThinkCentre) angeschlossen. Vorher hatte ich einen Raspi (HA OS), der überhaupt gar keine Probleme gemacht hat. 
Lieben Dank im Voraus!! 
