On Wed, 2016-09-21 at 18:41 +0200, Wim Osterholt wrote: > On Wed, Sep 21, 2016 at 02:21:17PM +0200, Oliver Neukum wrote: > > in sysfs. > > Google pointed me to /sys/bus/usb/drivers/usb/* > where I find all kinds of 'bConfigurationValue'. > Now is the problem to find which one you could mean. > > Under /sys/bus/usb/drivers/usb/7-1 I find > manufacturer which reads 'Conexant' and > bConfigurationValue which reads '1' OK. Strange. Please do dmesg -c echo 9 > /proc/sysrq-trigger modprobe cdc_acm echo "module cdc_acm +mpf" > /sys/kernel/debug/dynamic_debug/control [plug your device in] and provide the full output of dmesg after that. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html