| Hi Peter, Thanks for the info. Actually, the lsusb output was incomplete. It looks like the one attached so the device is actually there. Yet, you are right, the /dev/ttyUSB device is not present. I checked the state of the usb device and it appears to be loaded with the qmi_wwan driver, which seems correct: # lsusb -t /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=smsc95xx, 480M |__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 3: Dev 5, If 0, Class=Vendor Specific Class, Driver=rtl88XXau, 480M |__ Port 4: Dev 6, If 0, Class=Mass Storage, Driver=usb-storage, 480M |__ Port 5: Dev 7, If 0, Class=Vendor Specific Class, Driver=, 480M |__ Port 5: Dev 7, If 1, Class=Vendor Specific Class, Driver=, 480M |__ Port 5: Dev 7, If 2, Class=Vendor Specific Class, Driver=, 480M |__ Port 5: Dev 7, If 3, Class=Vendor Specific Class, Driver=, 480M |__ Port 5: Dev 7, If 4, Class=Vendor Specific Class, Driver=qmi_wwan, 480M Do you happen to have any other suggestion? With regards, Patrick Kosiol |
Bus 001 Device 007: ID 2c7c:0801 Quectel Wireless Solutions Co., Ltd. RM520N-GL Bus 001 Device 006: ID 0781:5571 SanDisk Corp. Cruzer Fit Bus 001 Device 005: ID 0846:9052 NetGear, Inc. A6100 AC600 DB Wireless Adapter [Realtek RTL8811AU] Bus 001 Device 004: ID 04d8:0c02 Microchip Technology, Inc. AR1100 HID-MOUSE Bus 001 Device 003: ID 0424:ec00 Microchip Technology, Inc. (formerly SMSC) SMSC9512/9514 Fast Ethernet Adapter Bus 001 Device 002: ID 0424:9514 Microchip Technology, Inc. (formerly SMSC) SMC9514 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
