On 03.04.2016 12:15, Alex wrote: > Hello, > [1.] System hang when connecting USB modem (LU150) > [2.] I'm running 4.4.5 kernel (Arch Linux). When this modem is connected > I'm getting below trace in journal and system becomes unusable - lsusb, > logout and some other operations lead to a complete hang, the only way > out is hardware power off. This modem works perfectly on 4.1.20 kernel - > attaching all outputs for both kernels. ...
See if it is related to http://thread.gmane.org/gmane.linux.usb.general/135626 if so, kernel >= 4.5 i.e. https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/net/usb/cdc_ether.c?h=linux-4.5.y&id=29c6dd5
