Please add support for BSNL (India) EVDO CMDA 2000 usb wireless modem which is not connecting

[Eshant]

I am attaching all required logs asked in the wiki link https://wiki.ubuntu.com/NetworkManager/Hardware/3G/Probing .

Please provide support for this new modem also. I hate wvdial, for me it means to compromise with a best OS to lose some of its best applications. No gwibber, chat, evolution mail
nm-tool:-
>>>>>>>>>>>>>>>>NetworkManager detection<<<<<<<<<<<<

State: connected (global)

<content filtered>

- Device: ttyACM0 --------------------------------------------------------------
  Type: Mobile Broadband (CDMA)
  Driver: cdc_acm
  State: disconnected
  Default: no

  Capabilities:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>SYSLOG<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.085740] usb 2-1.2: new full speed USB device using ehci_hcd and address 21
Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.165700] usb 2-1.2: device descriptor read/64, error -32
Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.388914] scsi20 : usb-storage 2-1.2:1.0
Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.418029] scsi 20:0:0:0: CD-ROM BSNL Mass Storage CD 7.00 PQ: 0 ANSI: 2
Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.424064] sr1: scsi-1 drive
Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.424456] sr 20:0:0:0: Attached scsi CD-ROM sr1
Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.428809] sr 20:0:0:0: Attached scsi generic sg2 type 5
Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.485569] usb 2-1.2: USB disconnect, address 21
Oct 2 19:32:15 eshant-Inspiron-N5110 kernel: [17805.764891] usb 2-1.2: new full speed USB device using ehci_hcd and address 22
Oct 2 19:32:18 eshant-Inspiron-N5110 kernel: [17809.478617] usb 2-1.2: USB disconnect, address 22
Oct 2 19:32:20 eshant-Inspiron-N5110 kernel: [17811.501834] usb 2-1.2: new full speed USB device using ehci_hcd and address 23
Oct 2 19:32:20 eshant-Inspiron-N5110 kernel: [17811.581993] usb 2-1.2: device descriptor read/64, error -32
Oct 2 19:32:21 eshant-Inspiron-N5110 kernel: [17811.804903] cdc_acm 2-1.2:1.0: This device cannot do calls on its own. It is not a modem.
Oct 2 19:32:21 eshant-Inspiron-N5110 kernel: [17811.804947] cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device
Oct 2 19:32:21 eshant-Inspiron-N5110 kernel: [17811.806494] scsi21 : usb-storage 2-1.2:1.2
Oct 2 19:32:21 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) opening serial port...
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.802814] scsi 21:0:0:0: CD-ROM BSNL Mass Storage CD 7.00 PQ: 0 ANSI: 2
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.803907] scsi 21:0:0:1: Direct-Access BSNL Mass Storage SD 7.00 PQ: 0 ANSI: 0 CCS
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.809031] sr1: scsi-1 drive
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.809423] sr 21:0:0:0: Attached scsi CD-ROM sr1
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.809734] sr 21:0:0:0: Attached scsi generic sg2 type 5
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.810342] sd 21:0:0:1: Attached scsi generic sg4 type 0
Oct 2 19:32:22 eshant-Inspiron-N5110 kernel: [17812.817334] sd 21:0:0:1: [sdb] Attached SCSI removable disk
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) closing serial port...
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) serial port closed
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) opening serial port...
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (Generic): CDMA modem /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2 claimed port ttyACM0
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) closing serial port...
Oct 2 19:32:26 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) serial port closed
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <warn> (ttyACM0): failed to look up interface index
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> WWAN now disabled by management service
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): new CDMA device (driver: 'cdc_acm' ifindex: -1)
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/7
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): now managed
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 1 -> 2 (reason 2)
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): deactivating device (reason: 2).
Oct 2 19:32:26 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 2 -> 3 (reason 0)
Oct 2 19:35:01 eshant-Inspiron-N5110 CRON[5125]: (root) CMD (if [ -x /usr/bin/gsmsmsrequeue ]; then /usr/bin/gsmsmsrequeue; fi)
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) starting connection 'BSNL EVDO connection'
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 3 -> 4 (reason 0)
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) scheduled...
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) started...
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 4 -> 6 (reason 0)
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) complete.
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) scheduled...
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) started...
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 6 -> 4 (reason 0)
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Activation (ttyACM0) Stage 1 of 5 (Device Prepare) complete.
Oct 2 19:35:39 eshant-Inspiron-N5110 modem-manager[1107]: <info> (ttyACM0) opening serial port...
Oct 2 19:35:39 eshant-Inspiron-N5110 modem-manager[1107]: <info> Modem /org/freedesktop/ModemManager/Modems/5: state changed (disabled -> enabling)
Oct 2 19:35:39 eshant-Inspiron-N5110 modem-manager[1107]: <info> Modem /org/freedesktop/ModemManager/Modems/5: state changed (enabling -> enabled)
Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> WWAN now enabled by management service
Oct 2 19:36:24 eshant-Inspiron-N5110 kernel: [18054.986799] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 5245410, at 5245410], missed IRQ?
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <warn> CDMA connection failed: (32) No service
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 4 -> 9 (reason 0)
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Marking connection 'BSNL EVDO connection' invalid.
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <warn> Activation (ttyACM0) failed.
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 9 -> 3 (reason 0)
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): deactivating device (reason: 0).
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Policy set 'Auto AndroidAP' (wlan0) as default for IPv4 routing and DNS.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>USB-info<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Hub Descriptor:
  bLength 9
  bDescriptorType 41
  nNbrPorts 4
  wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood 10 * 2 milli seconds
  bHubContrCurrent 0 milli Ampere
  DeviceRemovable 0x00
  PortPwrCtrlMask 0xff
 Hub Port Status:
   Port 1: 0000.0100 power
   Port 2: 0000.0100 power
   Port 3: 0000.0303 lowspeed power enable connect
   Port 4: 0000.0100 power
Device Status: 0x0003
  Self Powered
  Remote Wakeup Enabled

Bus 002 Device 018: ID 15eb:1231
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 1.10
  bDeviceClass 2 Communications
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 64
  idVendor 0x15eb
  idProduct 0x1231
  bcdDevice 0.00
  iManufacturer 1 BSNL

  iProduct 2 CDC Modem
  iSerial 11 Ø
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 90
    bNumInterfaces 3
    bConfigurationValue 1
    iConfiguration 4 MAC CONF1
    bmAttributes 0xc0
      Self Powered
    MaxPower 0mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 1
      bInterfaceClass 2 Communications
      bInterfaceSubClass 2 Abstract (modem)
      bInterfaceProtocol 1 AT-commands (v.25ter)
      iInterface 6 INTF0
      CDC Header:
        bcdCDC 1.10
      CDC ACM:
        bmCapabilities 0x06
          sends break
          line coding and serial state
      CDC Call Management:
        bmCapabilities 0x01
          call management
        bDataInterface 255
      CDC Union:
        bMasterInterface 0
        bSlaveInterface 1
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x85 EP 5 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 5
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 1
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 10 CDC Data
      bInterfaceSubClass 0 Unused
      bInterfaceProtocol 0
      iInterface 7 INTF1
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x01 EP 1 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x81 EP 1 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 2
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 8 Mass Storage
      bInterfaceSubClass 6 SCSI
      bInterfaceProtocol 80 Bulk-Only
      iInterface 8 INTF2
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x04 EP 4 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x84 EP 4 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
Device Status: 0x0001
  Self Powered
************************There are some more logs attached*****************************

There are two bugs opened at NM bugzilla:

Opened approx 1 year ago: https://bugzilla.gnome.org/show_bug.cgi?id=667042

I have opened a fresh request as mentioned at bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=679574

[Eshant (guptaeshant)]

Please someone respond on this bug. I can't live without ubuntu and ubuntu can't live without internet, therefore I can't live without have this bug solved. ;-)

[Thomas Hood (jdthood)]

@Eshant Gupta: Sorry that no one responded to your report. Is there any improvement in Ubuntu 12.04?

[Thomas Hood (jdthood)]

log says:

Oct 2 19:35:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> WWAN now enabled by management service
Oct 2 19:36:24 eshant-Inspiron-N5110 kernel: [18054.986799] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 5245410, at 5245410], missed IRQ?
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <warn> CDMA connection failed: (32) No service
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> (ttyACM0): device state change: 4 -> 9 (reason 0)
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <info> Marking connection 'BSNL EVDO connection' invalid.
Oct 2 19:36:39 eshant-Inspiron-N5110 NetworkManager[1101]: <warn> Activation (ttyACM0) failed.

[Eshant (guptaeshant)]

No improvement even in 12.04

PFA MM and NM logs nm.log , modem.log

[Thomas Hood (jdthood)]

The status of support for this card is "not working".

    https://wiki.ubuntu.com/NetworkManager/Hardware/3G

Google turned up a few interesting links.

   http://www.bsnlevdo.in/evdo/bsnl-evdo-faqs/
   http://www.bsnlevdoclub.com/bsnl-evdo-faqs/
    http://comments.gmane.org/gmane.user-groups.linux.delhi/26991

For now I guess you will have to continue using wvdial.

[Eshant (guptaeshant)]

Only through wvdial it is working but as you know it is not the reliable solution. So I am eagerly waiting the day me card will start working on my laptop.

It is via chip inside. I am trying to work on "minicom"(newbie)...so that I can give you some more detail which will be helpful.

modem-manager[23712]: <debug> [1337522264.079440] [mm-at-serial-port.c:333] debug_log(): (ttyACM0): <-- 'VIA TeleCom'

[Eshant (guptaeshant)]

modem-manager[23712]: <debug> [1337522264.192699] [mm-modem-helpers.c:920] mm_create_device_identifier(): Device ID source '000015eb00001231Manufacturer:+GMI:VIATeleComModel:CBP7.0Revision:UE100_R_V8.00.29TESN:+GSN:0x414482d5+GCAP:+CEVDO,+CIS707P-A,+CIS-856-A,+CGSM,+MS,+ES,+DS,+FCLASS"0x414482d5"UE100_R_V8.00.29TCBP7.0VIATeleCom'
modem-manager[23712]: <debug> [1337522264.192761] [mm-modem-helpers.c:921] mm_create_device_identifier(): Device ID '383e2a3a86d1f67311e39cd64eee824a3ebf3aa7'
modem-manager[23712]: <debug> [1337522264.192900] [mm-serial-port.c:844] mm_serial_port_close(): (ttyACM0) device open count is 1 (close)

[Eshant (guptaeshant)]

Here is minicom output:-

[Thomas Hood (jdthood)]

Eshant Gupta wrote:
> Only through wvdial it is working but as you know it is not the reliable solution.

How is wvdial not reliable? Is there a bug in wvdial?

> I am trying to work on "minicom"(newbie)...so that I can give you some more detail which will be helpful.

This is indeed helpful. Your information will have greater effect if you file a request upstream ("Please add support for...") and contribute your information there.

    https://bugzilla.gnome.org/browse.cgi?product=NetworkManager

[Eshant (guptaeshant)]

There also it is pending from 1 year...no response so far :-(

[Eshant (guptaeshant)]

Not reliable, I mean because, like you know, using wvdial, I can't use many applications as they don't find connectivity. Some of them are:
Gwibber, Empathy, ubuntu software centre
Wifi Hotspot, reverse tethering, etc, etc

[Thomas Hood (jdthood)]

If wvdial doesn't establish a connection over your modem and configure your system to have general Internet connectivity for all applications then please file a bug report against wvdial too. Provide as many details as you can.

[Abhijith Madhav (browseanddownload)]

@Eshant, I don't think there is a bug in wvdial. I had the same problem. Applications like evolution and gwibber first check through network manager to see if internet connectivity is available. As network manager doesn't recognize the evdo modem, evolution and gwibber try to work offline. The solution is to uninstall network manager as I have done. Now connect to internet using wvdial and all your applications should work fine.

[Mathieu Trudel-Lapierre (cyphermox)]

If you set this Invalid, it will take a long time before the issues are fixed.

Please, have you filed a bug upstream so that the NM developers can look into this? If so, could you comment here with a link to it so that we can go through other channels to get it to their attention?

Thanks!

[Eshant (guptaeshant)]

Thanks Mathieu for guiding me... :-)

There are two bugs

Opened approx 1 year ago: https://bugzilla.gnome.org/show_bug.cgi?id=667042

I have opened a fresh request as told above at bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=679574

[Eshant (guptaeshant)]

long long silence then some response now again long silence
huh!

[Khurshid Alam (khurshid-alam)]

I am experiencing the same problem with BSNL prithvi evdo modem. Is there any progress on this?

[Aleksander Morgado (aleksander-m)]

MM 06 comes with a new 'via' plugin; did you try MM 06?

[Dixon Xavier (dixoncx)]

Any update ?

[Aditya Pandey (callingmedic911)]

Hey Eshant,

Have you come up with any solution?

[Eshant (guptaeshant)]

In few days, I will try to debug and fix the problem by myself. No one is
taking up this issue. "aikla chalo"... I have C programming knowledge and
some basic sys programming hands on experience, learning how to do reverse
engineering because device specification is not made available by the
vendor.

On Fri, Mar 7, 2014 at 7:10 PM, Aditya Pandey <email address hidden>wrote:

> Hey Eshant,
>
> Have you come up with any solution?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/864658
>
> Title:
> Please add support for BSNL (India) EVDO CMDA 2000 usb wireless modem
> which is not connecting
>
> Status in "modemmanager" package in Ubuntu:
> Confirmed
>
> Bug description:
> I am attaching all required logs asked in the wiki link
> https://wiki.ubuntu.com/NetworkManager/Hardware/3G/Probing .
>
> Please provide support for this new modem also. I hate wvdial, for me it
> means to compromise with a best OS to lose some of its best applications.
> No gwibber, chat, evolution mail
> nm-tool:-
> >>>>>>>>>>>>>>>>NetworkManager detection<<<<<<<<<<<<
>
> State: connected (global)
>
> <content filtered>
>
> - Device: ttyACM0
> --------------------------------------------------------------
> Type: Mobile Broadband (CDMA)
> Driver: cdc_acm
> State: disconnected
> Default: no
>
> Capabilities:
>
>
> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>SYSLOG<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>
> Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.085740] usb 2-1.2:
> new full speed USB device using ehci_hcd and address 21
> Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.165700] usb 2-1.2:
> device descriptor read/64, error -32
> Oct 2 19:32:13 eshant-Inspiron-N5110 kernel: [17804.388914] scsi20 :
> usb-storage 2-1.2:1.0
> Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.418029] scsi
> 20:0:0:0: CD-ROM BSNL Mass Storage CD 7.00 PQ: 0 ANSI: 2
> Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.424064] sr1: scsi-1
> drive
> Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.424456] sr
> 20:0:0:0: Attached scsi CD-ROM sr1
> Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.428809] sr
> 20:0:0:0: Attached scsi generic sg2 type 5
> Oct 2 19:32:14 eshant-Inspiron-N5110 kernel: [17805.485569] usb 2-1.2:
> USB disconnect, address 21
> Oct 2 19:32:15 eshant-Inspiron-N5110 kernel: [17805.764891] usb 2-1.2:
> new full speed USB device using ehci_hcd and address 22
> Oct 2 19:32:18 eshant-Inspiron-N5110 kernel: [17809.478617] usb 2-1.2:
> USB disconnect, address 22
> Oct 2 19:32:20 eshant-Inspiron-N5110 kernel: [17811.501834] usb 2-1.2:
> new full speed USB device using ehci_hcd and address 23
> Oct 2 19:32:20 eshant-Inspiron-N5110 kernel: [17811.581993] usb 2-1.2:
> device descriptor read/64, error -32
> Oct 2 19:32:21 eshant-Inspiron-N5110 kernel: [17811.804903] cdc_acm
> 2-1.2:1.0: This device cannot do calls on its own. It is not a modem.
> Oct 2 19:32:21 eshant-Inspiron-N5110 kernel: [17811.804947] cdc_acm
> 2-1.2:1.0: ttyACM0: USB ACM device
...