[systemd-devel] Problem with netwrok broadband modem

[Christian Gagneraud]

On 24/06/11 15:59, Christian Gagneraud wrote:
> Hi,
>
> I'm trying to use a USB broadband modem with ofono and connman, when i
> plug the modem, i get an error from systemd "Failed to load device unit:
> Invalid argument" (full log below).
>
> Is it looking for a dev-tty at .device file?

root at tmbbv3:~ systemctl --no-pager list-units
UNIT                      LOAD   ACTIVE SUB       JOB
dev-hugepages.automount   loaded active waiting       Huge Pages File 
System Aut
dev-mqueue.automount      loaded active waiting       POSIX Message 
Queue File S
sys-devi...ttyUSB0.device loaded active plugged       HUAWEI_Mobile
sys-devi...ttyUSB1.device loaded active plugged       HUAWEI_Mobile
sys-devi...ttyUSB2.device loaded active plugged       HUAWEI_Mobile
[...]

So it seems to work... In that case why this error message?

Chris
>
> As i'm having trouble to get ofono working, I wonder if the problem
> doesn't come from here instead, or even perhaps it's due to the
> manufaturer and serial number of the USB device being garbage...
>
> Any hints or directions would be greatly appreciated.
>
> thanks,
> Chris
>
> PS: I'm using systemd-29, kernel 2.6.39 on an embedded ARM based device,
> and hand crafted distro with ptxdist
> (http://www.ptxdist.org/software/ptxdist/index_en.html)
>
> [ 2386.720000] usb 1-2: new full speed USB device number 8 using at91_ohci
> [ 2386.900000] usb 1-2: New USB device found, idVendor=12d1, idProduct=1001
> [ 2386.900000] usb 1-2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=1
> [ 2386.900000] usb 1-2: Product: HUAWEI Mobile
> [ 2386.900000] usb 1-2: Manufacturer:
> �ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ
> [ 2386.900000] usb 1-2: SerialNumber:
> �ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ
> [ 2386.910000] scsi14 : usb-storage 1-2:1.0
> [ 2386.910000] usb 1-2: USB disconnect, device number 8
> [ 2387.410000] usb 1-2: new full speed USB device number 9 using at91_ohci
> [ 2387.590000] usb 1-2: New USB device found, idVendor=12d1, idProduct=1001
> [ 2387.590000] usb 1-2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=1
> [ 2387.590000] usb 1-2: Product: HUAWEI Mobile
> [ 2387.590000] usb 1-2: Manufacturer:
> �ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ
> [ 2387.590000] usb 1-2: SerialNumber:
> �ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ�ÿ
> [ 2387.600000] option 1-2:1.0: GSM modem (1-port) converter detected
> [ 2387.610000] usb 1-2: GSM modem (1-port) converter now attached to
> ttyUSB0
> [ 2387.610000] option 1-2:1.1: GSM modem (1-port) converter detected
> [ 2387.610000] usb 1-2: GSM modem (1-port) converter now attached to
> ttyUSB1
> [ 2387.610000] option 1-2:1.2: GSM modem (1-port) converter detected
> [ 2387.610000] usb 1-2: GSM modem (1-port) converter now attached to
> ttyUSB2
> [ 2387.620000] scsi18 : usb-storage 1-2:1.3
>  >[ 2387.730000] systemd[1]: Failed to load device unit: Invalid argument
>  >[ 2387.740000] systemd[1]: dev-ttyUSB2.device changed dead -> plugged
>  >[ 2387.750000] systemd[1]:
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.2-ttyUSB2-tty-ttyUSB2.device
> changed dead -> plugged
>  >[ 2387.750000] systemd[1]: Running GC...
>  >[ 2387.750000] systemd[1]: Collecting
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.3-host13-target13:0:0-13:0:0:1-block-sda.device
>
>  >[ 2387.750000] systemd[1]: Collecting dev-sda.device
>  >[ 2387.750000] systemd[1]: Collecting
> dev-disk-by\x2did-usb\x2dHUAWEI_SD_Storage_\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xe
>
>  >[ 2387.750000] systemd[1]: Collecting
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.0-ttyUSB0-tty-ttyUSB0.device
>
>  >[ 2387.750000] systemd[1]: Collecting dev-ttyUSB0.device
>  >[ 2387.750000] systemd[1]: Collecting
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.1-ttyUSB1-tty-ttyUSB1.device
>
>  >[ 2387.750000] systemd[1]: Collecting dev-ttyUSB1.device
>  >[ 2387.770000] systemd[1]: Failed to load device unit: Invalid argument
>  >[ 2387.790000] systemd[1]: dev-ttyUSB0.device changed dead -> plugged
>  >[ 2387.790000] systemd[1]:
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.0-ttyUSB0-tty-ttyUSB0.device
> changed dead -> plugged
>  >[ 2387.790000] systemd[1]: Failed to load device unit: Invalid argument
>  >[ 2387.800000] systemd[1]: dev-ttyUSB1.device changed dead -> plugged
>  >[ 2387.800000] systemd[1]:
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.1-ttyUSB1-tty-ttyUSB1.device
> changed dead -> plugged
> [ 2388.630000] scsi 18:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2
> [ 2388.640000] scsi 18:0:0:1: Direct-Access HUAWEI SD Storage 2.31 PQ: 0
> ANSI: 2
> [ 2388.700000] sd 18:0:0:1: [sda] Attached SCSI removable disk
>  >[ 2388.800000] systemd[1]:
> dev-disk-by\x2did-usb\x2dHUAWEI_SD_Storage_\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\xc3\xbf\d
>
>  >[ 2388.800000] systemd[1]: dev-sda.device changed dead -> plugged
>  >[ 2388.800000] systemd[1]:
> sys-devices-platform-at91_ohci-usb1-1\x2d2-1\x2d2:1.3-host18-target18:0:0-18:0:0:1-block-sda.device
> changed dead -> plugged
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