Martin Mokrejs <mmokrejs@xxxxxxxxxxxxxxxxxx> writes:
> Hi Bjorn,
> my have a new USB 3G modem sold in Czech Republic by T-Mobile. So
> far it works for me only using the option driver and pppd. The
> 'qmi-network /dev/cdc-wdm0' does not work for me. Maybe it has no
> QMI interface ('modprobe qmi_wwan' does not log any new device
> found through dmesg but maybe that is because it is already claimed
> by cdc_ncm driver)? I haven't seen the virtual CD-ROM associated
> media errors with my old Huawei E372. I believe I can ignore them
> but is that because of the modem firmware being ... suboptimal?
> BTW, usb_modeswitch used to log that it flipped a device. Isn't
> this needed anymore?
Dont' know. Your log shows that the device is switched from 12d1:15ca
to 12d1:1506. I assume that is usb_modeswitch doint its job:
> [ 301.850141] usb 1-1.1: new high-speed USB device number 3 using xhci_hcd
> [ 301.954975] usb 1-1.1: New USB device found, idVendor=12d1, idProduct=15ca
> [ 301.954989] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> [ 301.954995] usb 1-1.1: Product: HUAWEI Mobile
> [ 301.955000] usb 1-1.1: Manufacturer: HUAWEI
> [ 301.955014] usb 1-1.1: SerialNumber: FFFFFFFFFFFFFFFF
> [ 302.002613] usb-storage 1-1.1:1.0: USB Mass Storage device detected
> [ 302.003190] scsi host7: usb-storage 1-1.1:1.0
> [ 303.016259] scsi 7:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2
> [ 303.025890] sr 7:0:0:0: [sr1] scsi-1 drive
> [ 303.026802] sr 7:0:0:0: Attached scsi CD-ROM sr1
> [ 303.027482] sr 7:0:0:0: Attached scsi generic sg3 type 5
> [ 303.031504] scsi 7:0:0:1: Direct-Access HUAWEI TF CARD Storage 2.31 PQ: 0 ANSI: 2
> [ 303.032127] sd 7:0:0:1: Attached scsi generic sg4 type 0
> [ 303.049740] sd 7:0:0:1: [sdc] Attached SCSI removable disk
> [ 303.106042] Buffer I/O error on dev sr1, logical block 512, async page read
> [ 303.359262] usb 1-1.1: USB disconnect, device number 3
> [ 304.032875] usb 1-1.1: new high-speed USB device number 4 using xhci_hcd
> [ 304.137604] usb 1-1.1: New USB device found, idVendor=12d1, idProduct=1506
> [ 304.137617] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> [ 304.137624] usb 1-1.1: Product: HUAWEI Mobile
> [ 304.137629] usb 1-1.1: Manufacturer: HUAWEI
> [ 304.554118] huawei_cdc_ncm 1-1.1:1.1: MAC-Address: 82:a9:4a:09:84:2e
> [ 304.576776] huawei_cdc_ncm 1-1.1:1.1: cdc-wdm0: USB WDM device
> [ 304.577728] huawei_cdc_ncm 1-1.1:1.1 wwan0: register 'huawei_cdc_ncm' at usb-0000:0b:00.0-1.1, Huawei CDC NCM device, 82:a9:4a:09:84:2e
> [ 304.579135] usb-storage 1-1.1:1.4: USB Mass Storage device detected
> [ 304.579425] scsi host8: usb-storage 1-1.1:1.4
> [ 304.579984] usb-storage 1-1.1:1.5: USB Mass Storage device detected
> [ 304.580141] scsi host9: usb-storage 1-1.1:1.5
> [ 304.640300] huawei_cdc_ncm 1-1.1:1.1 wwp11s0u1u1i1: renamed from wwan0
And the last part here shows that your modem has a Huawei specific NCM
interface, handled by the huawei_cdc_ncm driver. This is not a QMI
modem.
The huawei_cdc_ncm driver also provides a /dev/cdc-wdm0 device, but this
device speaks AT commands, not QMI. You can use the /dev/cdc-wdm0
device with Huawei specific commands like AT^NDISDUP etc. Google that
or use a ModemManager supporting it (not sure about the status here,
though...).
> Interface Descriptor:
> bLength 9
> bDescriptorType 4
> bInterfaceNumber 1
> bAlternateSetting 0
> bNumEndpoints 1
> bInterfaceClass 255 Vendor Specific Class
> bInterfaceSubClass 2
> bInterfaceProtocol 22
> iInterface 8 CDC Network Control Model (NCM)
The string descriptor is right. 255/2/22 is one of the
class/subclass/protocol sets Huawei use for their vendor specific NCM
variants.
Bjørn
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