Package: modemmanager Version: 1.6.2-1 Severity: normal Dear Maintainer,
I develop/use/sell USB TRNG (True Random Number Generator) device which works as an USB CDC/ACM device. The intention is that users can get the random bytes from /dev/ttyACM0 with no drivers installed. Unfortunately modemmanager interferes. For its users, I recommend to have a following udev rule: SUBSYSTEMS=="usb", ATTRS{idVendor}=="234b", ATTRS{idProduct}=="0001", ENV{ID_MM_DEVICE_IGNORE}="1" And then, the device works fine. Given the situation I distributed more than 200 devices, I think that it makes sense to have the udev rule above in the modemmanager package. The hardware is by free hardware design and the firmware is free software. It is also possible to run the firmware on another board which is cheap enough. Please have a look at: http://www.fsij.org/gnuk/neug-on-stm32-nucleo-f103.html So, I think there are more users of this device. -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable') Architecture: i386 (i686) Kernel: Linux 4.7.0-1-686-pae (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages modemmanager depends on: ii init-system-helpers 1.45 ii libc6 2.24-1 ii libglib2.0-0 2.48.1-3 ii libgudev-1.0-0 230-3 ii libmbim-glib4 1.14.0-1 ii libmbim-proxy 1.14.0-1 ii libmm-glib0 1.6.0-1 ii libpolkit-gobject-1-0 0.105-16 ii libqmi-glib5 1.16.0-1 ii libqmi-proxy 1.16.0-1 Versions of packages modemmanager recommends: ii usb-modeswitch 2.4.0+repack0-1 modemmanager suggests no packages. -- no debconf information