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2eb648a
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Noob to Ubuntu... I have a similar problem with a U.S. Robotics USR5637 modem. lsusb and usb-devices both show the device, and dmesg shows it being recognized, however it does not show up in /dev as ttyACM*. Running 21.10 on a Raspberry Pi 4. The device works as expected with 20.04.3 LTS also on a Pi 4. I tried Henrik Dahle's work around of reinstalling fuse simply because he had luck with it, but no joy. The device is also not created with it left installed during a reboot.
lsusb:
Bus 001 Device 008: ID 0baf:0303 U.S. Robotics USR5637 56K Faxmodem
usb-devices:
T: Bus=01 Lev=04 Prnt=06 Port=01 Cnt=01 Dev#= 8 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=02(commc) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0baf ProdID=0303 Rev=02.00
S: Manufacturer=
S: Product=USB Modem
S: SerialNumber=
C: #Ifs= 2 Cfg#= 2 Atr=80 MxPwr=360mA
I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=(none)
I: If#=0x1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)
dmesg:
[ 127.376952] usb 1-1.2.4.1: new high-speed USB device number 7 using xhci_hcd
[ 127.585699] usb 1-1.2.4.1: New USB device found, idVendor=0baf, idProduct=0303, bcdDevice= 2.00
[ 127.585739] usb 1-1.2.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=10
[ 127.585757] usb 1-1.2.4.1: Product: USB Modem
[ 127.585771] usb 1-1.2.4.1: Manufacturer: U.S.Robotics
[ 127.585784] usb 1-1.2.4.1: SerialNumber: 0000002
[ 127.747138] kauditd_printk_skb: 518 callbacks suppressed
[ 127.747159] audit: type=1400 audit(164643949
[ 127.747191] audit: type=1400 audit(164643949