Thomas Schäfer <tschaefer@xxxxxxxxxxx> writes: > Am 27.11.2013 13:33, schrieb Bjørn Mork: >> Thomas Schäfer <tschaefer@xxxxxxxxxxx> writes: >> >>> Hi, >>> >>> I have it already mentioned somewhere. Sorry for duplicates. >>> >>> The Huawei E5776 >>> (normal use, classic IPv4, hilink mode (with webinterface and RFC1918 IP- >>> config including NAT) >> >> So this is always connected and you don't normally use ModemManager or >> any other userspace utility to manage it? > > Yes. I am not sure if Networkmanager was involved, but if so, he did > only dhcp. (or I started the dhcpcd ) > > > >> I guess it should be a "wwan" >> device at all then, but I don't see how we can avoid that given that >> both PID and subclass/protocol is same as managed modems. >> > > Some other hilink-devices, I have seen, use cdc_ether instead, still > working with 3.13. > > > >> Anyway, this is obviously not the problem in your case. >> >>> worked well with 3.12 and before, but it doesn't work any more with 3.13. >>> >>> At least one local branded version of the huawei E3776 is also affected. >> >> Yes, and you already tested reverting all changes to cdc_ncm with that >> modem, was that so? You still have the same problems with the v3.12 >> version of cdc_ncm running on v3.13-rc1+? > > If I remember correctly yes. > > >> >> How about looking at usbmon differences? That should show us where >> things start to go wrong. >> > > I will try it tonight. > > > Thomas > > > PS: in the meantime I was shocked by the change of 0930:1319 Ericsson > H5321gw from cdc_ncm to mbim in older kernel-versions. Yes, that is a problem caused by the shared NCM/MBIM function these devices use. The choice must be made by the kernel, because it is a choice between different drivers. The best I could come up with is the cdc_ncm module parameter setting the policy: prefer_mbim=N implies that NCM is preferred. You can set the parameter when loading cdc_ncm, or any time later by writing to /sys/module/cdc_ncm/parameters/prefer_mbim. But you'll have to force the modem to be reprobed somehow after making a change, so it's probably best to set the option in a modprobe config file for built-in modems like the H5321gw Bjørn -- 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
