Re: How to add new CDC-ACM usb modem device to supported list?

From: Ed W
Date: Mon Jan 26 2009 - 06:21:32 EST

Ed W wrote:
> Hi, I have a wireless modem device which I believe to be a normal usb
> ACM modem type device (works this way in windows where there is just a
> .inf file supplied which connects the device with usbser.sys).
> I also read the cdc-acm kernel readme and
> have a rough idea on what should be happening

After fixing an embarrassingly trivial configuration error, the acm
driver *is* in fact loading correctly...

However, I'm not getting any response using either minicom or "cu". I
suspect something fairly simple - can someone perhaps point me towards
how to get some more detailed debugging info from this kind of USB
device please?

Relevant bits from /proc/bus/usb/devices

T: Bus=06 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2
B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=0000 ProdID=0000 Rev= 2.06
S: Manufacturer=Linux uhci_hcd
S: Product=UHCI Host Controller
S: SerialNumber=0000:00:1d.0
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms

T: Bus=06 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 8 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=e0(unk. ) Sub=01 Prot=01 MxPS=32 #Cfgs= 1
P: Vendor=1edd ProdID=9555 Rev= 0.00
S: Manufacturer=Iridium
S: Product=Iridium 9555 Handset
C:* #Ifs= 2 Cfg#= 1 Atr=c0 MxPwr=250mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=cdc_acm
E: Ad=81(I) Atr=03(Int.) MxPS= 64 Ivl=1ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms

[5075781.727325] usb 6-2: new full speed USB device using uhci_hcd and
address 8
[5075781.911917] usb 6-2: configuration #1 chosen from 1 choice
[5075781.915864] hci_usb: probe of 6-2:1.0 failed with error -5
[5075781.915879] cdc_acm 6-2:1.0: ttyACM0: USB ACM device

Presumably this error -5 is relevant??


Ed W

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