(Devicecode with scopes only) EM06 Sometimes boots without any AT ports

還沒有人認領這個 Issue。

This problem is independent of devicecode as it can be reproduced with only mmcli running.

See here the EM06
- starts with no AT ports
- reboots with AT ports
- reboots again with AT ports
- reboots last time with no AT ports

```
root@OpenWrt:~/src# mmcli -m 17
-----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/17
| device id: 8dc5e5c2b5c996215d6759317b8d05c778fae11d
-----------------------------------
Hardware | manufacturer: Quectel
| model: EM06-E
| firmware revision: EM06ELAR03A08M4G
| carrier config: ROW_Generic_3GPP
| carrier config revision: 06010821
| h/w revision: 20000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 866680041259328
-----------------------------------
System | device: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2
| drivers: option1, qmi_wwan
| plugin: quectel
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (qcdm), ttyUSB1 (gps), wwan0 (net) <<----- no at ports
-----------------------------------
Status | state: failed
| failed reason: sim-missing
| power state: on
-----------------------------------
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: any; preferred: none
-----------------------------------
Bands | supported: utran-1, utran-3, utran-5, utran-8, eutran-1, eutran-3,
| eutran-5, eutran-7, eutran-8, eutran-20, eutran-28, eutran-32,
| eutran-38, eutran-40, eutran-41
-----------------------------------
IP | supported: ipv4, ipv6, ipv4v6

root@OpenWrt:~/src# mmcli -m 17 -r
successfully reseted the modem

root@OpenWrt:~/src# mmcli -m 18
-----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/18
| device id: 8dc5e5c2b5c996215d6759317b8d05c778fae11d
-----------------------------------
Hardware | manufacturer: Quectel
| model: EM06-E
| firmware revision: EM06ELAR03A08M4G
| carrier config: ROW_Generic_3GPP
| carrier config revision: 06010821
| h/w revision: 20000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 866680041259328
-----------------------------------
System | device: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2
| drivers: option1, qmi_wwan
| plugin: quectel
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (qcdm), ttyUSB1 (gps),
| ttyUSB2 (at), ttyUSB3 (at), wwan0 (net) <<---- at ports
-----------------------------------
Status | state: failed
| failed reason: sim-missing
| power state: on
-----------------------------------
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: any; preferred: none
-----------------------------------
Bands | supported: utran-1, utran-3, utran-5, utran-8, eutran-1, eutran-3,
| eutran-5, eutran-7, eutran-8, eutran-20, eutran-28, eutran-32,
| eutran-38, eutran-40, eutran-41
-----------------------------------
IP | supported: ipv4, ipv6, ipv4v6

root@OpenWrt:~/src# mmcli -m 18 -r
successfully reseted the modem

root@OpenWrt:~/src# mmcli -m 19
-----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/19
| device id: 8dc5e5c2b5c996215d6759317b8d05c778fae11d
-----------------------------------
Hardware | manufacturer: Quectel
| model: EM06-E
| firmware revision: EM06ELAR03A08M4G
| carrier config: ROW_Generic_3GPP
| carrier config revision: 06010821
| h/w revision: 20000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 866680041259328
-----------------------------------
System | device: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2
| drivers: option1, qmi_wwan
| plugin: quectel
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (qcdm), ttyUSB1 (gps),
| ttyUSB2 (at), ttyUSB3 (at), wwan0 (net) <<----- at ports
-----------------------------------
Status | state: failed
| failed reason: sim-missing
| power state: on
-----------------------------------
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: any; preferred: none
-----------------------------------
Bands | supported: utran-1, utran-3, utran-5, utran-8, eutran-1, eutran-3,
| eutran-5, eutran-7, eutran-8, eutran-20, eutran-28, eutran-32,
| eutran-38, eutran-40, eutran-41
-----------------------------------
IP | supported: ipv4, ipv6, ipv4v6

root@OpenWrt:~/src# mmcli -m 19 -r
successfully reseted the modem

root@OpenWrt:~/src# mmcli -m 20
-----------------------------------
General | path: /org/freedesktop/ModemManager1/Modem/20
| device id: 8dc5e5c2b5c996215d6759317b8d05c778fae11d
-----------------------------------
Hardware | manufacturer: Quectel
| model: EM06-E
| firmware revision: EM06ELAR03A08M4G
| carrier config: ROW_Generic_3GPP
| carrier config revision: 06010821
| h/w revision: 20000
| supported: gsm-umts, lte
| current: gsm-umts, lte
| equipment id: 866680041259328
-----------------------------------
System | device: /sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2
| drivers: option1, qmi_wwan
| plugin: quectel
| primary port: cdc-wdm0
| ports: cdc-wdm0 (qmi), ttyUSB0 (qcdm), ttyUSB1 (gps), wwan0 (net) <<----- no at ports
-----------------------------------
Status | state: failed
| failed reason: sim-missing
| power state: on
-----------------------------------
Modes | supported: allowed: 3g; preferred: none
| allowed: 4g; preferred: none
| allowed: 3g, 4g; preferred: 4g
| allowed: 3g, 4g; preferred: 3g
| current: allowed: any; preferred: none
-----------------------------------
Bands | supported: utran-1, utran-3, utran-5, utran-8, eutran-1, eutran-3,
| eutran-5, eutran-7, eutran-8, eutran-20, eutran-28, eutran-32,
| eutran-38, eutran-40, eutran-41
-----------------------------------
IP | supported: ipv4, ipv6, ipv4v6
```

Not going to make a fix for this now (in migration phase) because:
- This is not part of feature parity (EM06 was not compatible at all before)
- I do not have time nor patience for this petty device

未指定原始檔案或測試。首先在 Quectel EM06-E 上使用 mmcli -m 並重複重設數據機來重現該序列，然後追蹤裝置在每次重新啟動後如何被列舉。當數據機始終暴露其 AT 連接埠，而不是間歇性地在沒有這些連接埠的情況下啟動時，即表示完成。

由索引模型根據 Issue 內容生成。