Modem not resetting.

Paul Gildea gildeap at tcd.ie
Tue Apr 28 10:54:59 UTC 2020


Hi, I see an issue when resetting modems, both with Telit and Sierra. It
happens quite rarely but renders the modem unusable. I tell the modem to go
offline and then to reset, most of the time this works, it's a standard
thing. Occasionally it will say that it is a success but never actually
reload, no matter how many times you issue the commands after this the
modem won't reset, and it also can not come back online (invalid transition
I assume). Here is the verbose output if that helps in any way, any test
you thinkI can run while I have a modem in this state? (Telit LNM960A18)

 qmicli -v -p -d /dev/cdc-wdm3 --dms-get-operating-mode
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] Opening device with flags
'proxy, auto'...
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] loaded driver of cdc-wdm
port: qmi_wwan
[28 Apr 2020, 10:43:51] -Warning ** [/dev/cdc-wdm3] requested auto mode but
no MBIM QMUX support available
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] created endpoint
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 28
<<<<<<   data   =
01:1B:00:00:00:00:00:01:00:FF:10:00:01:0D:00:2F:64:65:76:2F:63:64:63:2D:77:64:6D:33

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 27
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 16
<<<<<<   message     = "Internal Proxy Open" (0xFF00)
<<<<<< TLV:
<<<<<<   type       = "Device Path" (0x01)
<<<<<<   length     = 13
<<<<<<   value      = 2F:64:65:76:2F:63:64:63:2D:77:64:6D:33
<<<<<<   translated = /dev/cdc-wdm3

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 19
<<<<<<   data   = 01:12:00:80:00:00:01:01:00:FF:07:00:02:04:00:00:00:00:00

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 18
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 7
<<<<<<   message     = "Internal Proxy Open" (0xFF00)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS

[28 Apr 2020, 10:43:51] [Debug] QMI Device at '/dev/cdc-wdm3' ready
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] Assuming service 'dms' is
supported...
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] Allocating new client ID...
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 16
<<<<<<   data   = 01:0F:00:00:00:00:00:02:22:00:04:00:01:01:00:02

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 15
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 2
<<<<<<   tlv_length  = 4
<<<<<<   message     = "Allocate CID" (0x0022)
<<<<<< TLV:
<<<<<<   type       = "Service" (0x01)
<<<<<<   length     = 1
<<<<<<   value      = 02
<<<<<<   translated = dms

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 24
<<<<<<   data   =
01:17:00:80:00:00:01:02:22:00:0C:00:02:04:00:00:00:00:00:01:02:00:02:02

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 23
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 2
<<<<<<   tlv_length  = 12
<<<<<<   message     = "Allocate CID" (0x0022)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS
<<<<<< TLV:
<<<<<<   type       = "Allocation Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] Registered 'dms' (version
unknown) client with ID '2'
[28 Apr 2020, 10:43:51] [Debug] Asynchronously getting operating mode...
[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 13
<<<<<<   data   = 01:0C:00:00:02:02:00:01:00:2D:00:00:00

[28 Apr 2020, 10:43:51] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 12
<<<<<<   flags   = 0x00
<<<<<<   service = "dms"
<<<<<<   client  = 2
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 0
<<<<<<   message     = "Get Operating Mode" (0x002D)

[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 24
<<<<<<   data   =
01:17:00:80:02:02:02:01:00:2D:00:0B:00:02:04:00:00:00:00:00:01:01:00:03

[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 23
<<<<<<   flags   = 0x80
<<<<<<   service = "dms"
<<<<<<   client  = 2
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 11
<<<<<<   message     = "Get Operating Mode" (0x002D)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS
<<<<<< TLV:
<<<<<<   type       = "Mode" (0x01)
<<<<<<   length     = 1
<<<<<<   value      = 03
<<<<<<   translated = offline

[/dev/cdc-wdm3] Operating mode retrieved:
        Mode: 'offline'
        Reason: 'unknown'
        HW restricted: 'no'
[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] Releasing 'dms' client with
flags 'release-cid'...
[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] Unregistered 'dms' client
with ID '2'
[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 17
<<<<<<   data   = 01:10:00:00:00:00:00:03:23:00:05:00:01:02:00:02:02

[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 16
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 3
<<<<<<   tlv_length  = 5
<<<<<<   message     = "Release CID" (0x0023)
<<<<<< TLV:
<<<<<<   type       = "Release Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 24
<<<<<<   data   =
01:17:00:80:00:00:01:03:23:00:0C:00:02:04:00:00:00:00:00:01:02:00:02:02

[28 Apr 2020, 10:43:55] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 23
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 3
<<<<<<   tlv_length  = 12
<<<<<<   message     = "Release CID" (0x0023)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS
<<<<<< TLV:
<<<<<<   type       = "Release Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:43:55] [Debug] Client released
[28 Apr 2020, 10:43:55] [Debug] Closed

*RESET:*

qmicli -v -p -d /dev/cdc-wdm3 --dms-set-operating-mode="reset"
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] Opening device with flags
'proxy, auto'...
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] loaded driver of cdc-wdm
port: qmi_wwan
[28 Apr 2020, 10:44:09] -Warning ** [/dev/cdc-wdm3] requested auto mode but
no MBIM QMUX support available
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] created endpoint
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 28
<<<<<<   data   =
01:1B:00:00:00:00:00:01:00:FF:10:00:01:0D:00:2F:64:65:76:2F:63:64:63:2D:77:64:6D:33

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 27
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 16
<<<<<<   message     = "Internal Proxy Open" (0xFF00)
<<<<<< TLV:
<<<<<<   type       = "Device Path" (0x01)
<<<<<<   length     = 13
<<<<<<   value      = 2F:64:65:76:2F:63:64:63:2D:77:64:6D:33
<<<<<<   translated = /dev/cdc-wdm3

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 19
<<<<<<   data   = 01:12:00:80:00:00:01:01:00:FF:07:00:02:04:00:00:00:00:00

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 18
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 7
<<<<<<   message     = "Internal Proxy Open" (0xFF00)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS

[28 Apr 2020, 10:44:09] [Debug] QMI Device at '/dev/cdc-wdm3' ready
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] Assuming service 'dms' is
supported...
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] Allocating new client ID...
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 16
<<<<<<   data   = 01:0F:00:00:00:00:00:02:22:00:04:00:01:01:00:02

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 15
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 2
<<<<<<   tlv_length  = 4
<<<<<<   message     = "Allocate CID" (0x0022)
<<<<<< TLV:
<<<<<<   type       = "Service" (0x01)
<<<<<<   length     = 1
<<<<<<   value      = 02
<<<<<<   translated = dms

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 24
<<<<<<   data   =
01:17:00:80:00:00:01:02:22:00:0C:00:02:04:00:00:00:00:00:01:02:00:02:02

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 23
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 2
<<<<<<   tlv_length  = 12
<<<<<<   message     = "Allocate CID" (0x0022)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS
<<<<<< TLV:
<<<<<<   type       = "Allocation Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] Registered 'dms' (version
unknown) client with ID '2'
[28 Apr 2020, 10:44:09] [Debug] Asynchronously setting operating mode...
[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 17
<<<<<<   data   = 01:10:00:00:02:02:00:01:00:2E:00:04:00:01:01:00:04

[28 Apr 2020, 10:44:09] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 16
<<<<<<   flags   = 0x00
<<<<<<   service = "dms"
<<<<<<   client  = 2
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 4
<<<<<<   message     = "Set Operating Mode" (0x002E)
<<<<<< TLV:
<<<<<<   type       = "Mode" (0x01)
<<<<<<   length     = 1
<<<<<<   value      = 04
<<<<<<   translated = reset

[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 20
<<<<<<   data   =
01:13:00:80:02:02:02:01:00:2E:00:07:00:02:04:00:00:00:00:00

[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 19
<<<<<<   flags   = 0x80
<<<<<<   service = "dms"
<<<<<<   client  = 2
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 7
<<<<<<   message     = "Set Operating Mode" (0x002E)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS

[/dev/cdc-wdm3] Operating mode set successfully
[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] Releasing 'dms' client with
flags 'release-cid'...
[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] Unregistered 'dms' client
with ID '2'
[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] sent message...
<<<<<< RAW:
<<<<<<   length = 17
<<<<<<   data   = 01:10:00:00:00:00:00:03:23:00:05:00:01:02:00:02:02

[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] sent generic request
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 16
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 3
<<<<<<   tlv_length  = 5
<<<<<<   message     = "Release CID" (0x0023)
<<<<<< TLV:
<<<<<<   type       = "Release Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] received message...
<<<<<< RAW:
<<<<<<   length = 24
<<<<<<   data   =
01:17:00:80:00:00:01:03:23:00:0C:00:02:04:00:00:00:00:00:01:02:00:02:02

[28 Apr 2020, 10:44:13] [Debug] [/dev/cdc-wdm3] received generic response
(translated)...
<<<<<< QMUX:
<<<<<<   length  = 23
<<<<<<   flags   = 0x80
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "response"
<<<<<<   transaction = 3
<<<<<<   tlv_length  = 12
<<<<<<   message     = "Release CID" (0x0023)
<<<<<< TLV:
<<<<<<   type       = "Result" (0x02)
<<<<<<   length     = 4
<<<<<<   value      = 00:00:00:00
<<<<<<   translated = SUCCESS
<<<<<< TLV:
<<<<<<   type       = "Release Info" (0x01)
<<<<<<   length     = 2
<<<<<<   value      = 02:02
<<<<<<   translated = [ service = 'dms' cid = '2' ]

[28 Apr 2020, 10:44:13] [Debug] Client released
[28 Apr 2020, 10:44:13] [Debug] Closed

Regards,

--
Paul
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