https://bugzilla.suse.com/show_bug.cgi?id=1208382 Bug ID: 1208382 Summary: cdc_acm prevents USB connection to Samsung S20 Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.4 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: stephan.barth@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- When trying to upload files to my Samsung S20 the GNOME file manager fails to see any files or folders, because cdc_acm gets loaded into the kernel, which creates ttyACM0 and therefore access to the smartphone is blocked. rmmod cdc_acm and switching connection modes back and forth on the S20 allows accessing the smartphone through the file manager. Snippet from dmesg: [42176.794325] usb 3-2: new high-speed USB device number 13 using xhci_hcd [42176.952259] usb 3-2: New USB device found, idVendor=04e8, idProduct=6865, bcdDevice= c.00 [42176.952265] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [42176.952267] usb 3-2: Product: SAMSUNG_Android [42176.952268] usb 3-2: Manufacturer: SAMSUNG [42176.952269] usb 3-2: SerialNumber: R3CNB0272ZP [42201.218000] usb 3-2: USB disconnect, device number 13 [42201.698482] usb 3-2: new high-speed USB device number 14 using xhci_hcd [42201.856728] usb 3-2: New USB device found, idVendor=04e8, idProduct=6860, bcdDevice= c.00 [42201.856735] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [42201.856736] usb 3-2: Product: SAMSUNG_Android [42201.856738] usb 3-2: Manufacturer: SAMSUNG [42201.856739] usb 3-2: SerialNumber: R3CNB0272ZP [42201.887908] cdc_acm 3-2:1.1: ttyACM0: USB ACM device -- You are receiving this mail because: You are on the CC list for the bug.