[114400.883710] usb 5-3: USB disconnect, device number 3
[114405.542116] usb 5-3: new full-speed USB device number 5 using xhci_hcd
[114405.718895] usb 5-3: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=24.11
[114405.718901] usb 5-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[114405.718904] usb 5-3: Product: USB Receiver
[114405.718907] usb 5-3: Manufacturer: Logitech
[114405.757860] logitech-djreceiver 0003:046D:C52B.0009: hiddev1,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:0c:00.0-3/input2
[114410.784914] logitech-djreceiver 0003:046D:C52B.0009: device of type eQUAD step 4 DJ (0x04) connected on slot 3
[114410.898401] input: Logitech MX Keys as /devices/pci0000:00/0000:00:1c.7/0000:0c:00.0/usb5/5-3/5-3:1.2/0003:046D:C52B.0009/0003:046D:408A.000A/input/input31
[114410.898890] logitech-hidpp-device 0003:046D:408A.000A: input,hidraw2: USB HID v1.11 Keyboard [Logitech MX Keys] on usb-0000:0c:00.0-3/input2:1
[114410.912947] input: Logitech MX Master 3 as /devices/pci0000:00/0000:00:1c.7/0000:0c:00.0/usb5/5-3/5-3:1.2/0003:046D:C52B.0009/0003:046D:4082.000B/input/input32
[114410.913371] logitech-hidpp-device 0003:046D:4082.000B: input,hidraw3: USB HID v1.11 Keyboard [Logitech MX Master 3] on usb-0000:0c:00.0-3/input2:3
[114410.942975] logitech-hidpp-device 0003:046D:408A.000A: HID++ 4.5 device connected.
[114411.028897] logitech-hidpp-device 0003:046D:4082.000B: HID++ 4.5 device connected.
Linux bbox 5.4.0-48-generic #52-Ubuntu SMP Thu Sep 10 10:58:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
babak@bbox:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
Also seeing this.
[114400.883710] usb 5-3: USB disconnect, device number 3 C52B.0009: hiddev1,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000: 0c:00.0- 3/input2 C52B.0009: device of type eQUAD step 4 DJ (0x04) connected on slot 3 pci0000: 00/0000: 00:1c.7/ 0000:0c: 00.0/usb5/ 5-3/5-3: 1.2/0003: 046D:C52B. 0009/0003: 046D:408A. 000A/input/ input31 hidpp-device 0003:046D: 408A.000A: input,hidraw2: USB HID v1.11 Keyboard [Logitech MX Keys] on usb-0000: 0c:00.0- 3/input2: 1 pci0000: 00/0000: 00:1c.7/ 0000:0c: 00.0/usb5/ 5-3/5-3: 1.2/0003: 046D:C52B. 0009/0003: 046D:4082. 000B/input/ input32 hidpp-device 0003:046D: 4082.000B: input,hidraw3: USB HID v1.11 Keyboard [Logitech MX Master 3] on usb-0000: 0c:00.0- 3/input2: 3 hidpp-device 0003:046D: 408A.000A: HID++ 4.5 device connected. hidpp-device 0003:046D: 4082.000B: HID++ 4.5 device connected.
[114405.542116] usb 5-3: new full-speed USB device number 5 using xhci_hcd
[114405.718895] usb 5-3: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=24.11
[114405.718901] usb 5-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[114405.718904] usb 5-3: Product: USB Receiver
[114405.718907] usb 5-3: Manufacturer: Logitech
[114405.757860] logitech-djreceiver 0003:046D:
[114410.784914] logitech-djreceiver 0003:046D:
[114410.898401] input: Logitech MX Keys as /devices/
[114410.898890] logitech-
[114410.912947] input: Logitech MX Master 3 as /devices/
[114410.913371] logitech-
[114410.942975] logitech-
[114411.028897] logitech-
Linux bbox 5.4.0-48-generic #52-Ubuntu SMP Thu Sep 10 10:58:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
babak@bbox:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
babak@bbox:~$ lsb_release -d
Description: Ubuntu 20.04.1 LTS
babak@bbox:~$ cat /etc/os-release /www.ubuntu. com/" /help.ubuntu. com/" /bugs.launchpad .net/ubuntu/" POLICY_ URL="https:/ /www.ubuntu. com/legal/ terms-and- policies/ privacy- policy" CODENAME= focal CODENAME= focal
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
VERSION_ID="20.04"
HOME_URL="https:/
SUPPORT_URL="https:/
BUG_REPORT_URL="https:/
PRIVACY_
VERSION_
UBUNTU_