Hello. I’m having problems with getting EM7455 to work. Using Linux Mint, kernel 4.10, Lenovo.
I’ve seen people having similar problems, but I did not have any luck matching my problem with others, and I need help finding the problem.
Got some info below, but that does not say much. Where else should I look for more detailed failure logs?
Info about modem
$ mmcli -m 0
-------------------------
Hardware | manufacturer: 'Sierra'
| model: 'MBIM [1199:9079]'
| revision: 'SWI9X30C_02.20.03.00'
| supported: 'gsm-umts, lte'
| current: 'gsm-umts, lte'
| equipment id: '014582006024898'
-------------------------
System | device: '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6'
| drivers: 'cdc_mbim'
| plugin: 'Sierra'
| primary port: 'cdc-wdm0'
| ports: 'wwp0s20f0u6i12 (net), cdc-wdm0 (mbim)'
-------------------------
Numbers | own : 'unknown'
-------------------------
Status | lock: 'none'
| unlock retries: 'sim-pin2 (3)'
| state: 'disabled'
| power state: 'low'
| access tech: 'unknown'
| signal quality: '0' (cached)
-------------------------
Modes | supported: 'allowed: 3g, 4g; preferred: none'
| current: 'allowed: 3g, 4g; preferred: none'
-------------------------
Bands | supported: 'unknown'
| current: 'unknown'
-------------------------
IP | supported: 'ipv4, ipv6, ipv4v6'
-------------------------
3GPP | imei: '***************'
| enabled locks: 'fixed-dialing'
| operator id: 'unknown'
| operator name: 'unknown'
| subscription: 'unknown'
| registration: 'unknown'
-------------------------
SIM | path: '/org/freedesktop/ModemManager1/SIM/0'
-------------------------
Bearers | paths: 'none'When trying to enable modem
$ mmcli -m 0 -e -v
[Debug] ModemManager process found at ':1.5'
[Debug] Assuming '0' is the modem index
[Debug] Modem found at '/org/freedesktop/ModemManager1/Modem/0'
[Debug] Synchronously enabling modem...
error: couldn't enable the modem: 'GDBus.Error:org.freedesktop.libmbim.Error.Status.Failure: Failure'$ journalctl -xf
ModemManager[1103]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (disabled -> enabling)
NetworkManager[1169]: <info> [1517475818.7474] (cdc-wdm0): modem state changed, 'disabled' --> 'enabling' (reason: user-requested)
ModemManager[1103]: <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling -> disabled)
NetworkManager[1169]: <info> [1517475818.8210] (cdc-wdm0): modem state changed, 'enabling' --> 'disabled' (reason: unknown)Thought of the FCC authentication problem, got timeout, when allocating CID.
$ qmicli -v -p -d /dev/cdc-wdm0 --dms-set-fcc-authentication
[Debug] [/dev/cdc-wdm0] Opening device with flags 'proxy'...
[Debug] cannot connect to proxy: Could not connect: Connection refused
[Debug] spawning new qmi-proxy (try 1)...
[Debug] [/dev/cdc-wdm0] 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:30
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Sent message (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:30
<<<<<< translated = /dev/cdc-wdm0
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>> RAW:
>>>>>> length = 19
>>>>>> data = 01:12:00:00:00:00:01:01:00:FF:07:00:02:04:00:00:00:00:00
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Received message (translated)...
>>>>>> QMUX:
>>>>>> length = 18
>>>>>> flags = 0x00
>>>>>> 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
[01 Feb 2018, 11:45:50] [Debug] QMI Device at '/dev/cdc-wdm0' ready
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Assuming service 'dms' is supported...
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Allocating new client ID...
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Sent message...
<<<<<< RAW:
<<<<<< length = 16
<<<<<< data = 01:0F:00:00:00:00:00:02:22:00:04:00:01:01:00:02
[01 Feb 2018, 11:45:50] [Debug] [/dev/cdc-wdm0] Sent message (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
error: couldn't create client for the 'dms' service: CID allocation failed in the CTL client: Transaction timed out