Hello everyone,
I’m having trouble getting my LTE modem to work on my MikroTik hAP ac³ LTE running OpenWrt. I’ve followed several troubleshooting steps, but I’m still facing issues with modem recognition. Here’s a summary of what I’ve done so far:
Initial Setup : I successfully installed OpenWrt on my hAP ac³ LTE. The system appears to be functioning well otherwise.
no LTE interface couldbe add.
Device Check : I checked for the existence of the /dev/cdc-wdm0 device:
ls /dev/cdc-wdm*
Unfortunately, it does not seem to exist.
USB Device List : I ran the following command to see if the modem is recognized by the system:
lsusb
The modem appears in the list, but I am unable to access it.
Kernel Messages : I checked the kernel messages for any relevant logs:
dmesg | grep -i cdc
dmesg | grep -i usb
There are no obvious errors, but the /dev/cdc-wdm0 device is still missing.
Loaded Modules : I verified the necessary kernel modules for USB and CDC devices:
lsmod | grep cdc
lsmod | grep usb
The relevant modules seem to be loaded, but the modem is not accessible.
Reboot : I rebooted the device to see if that would help, but it did not resolve the issue.
Driver Installation : I attempted to install the necessary drivers:
opkg update
opkg install kmod-usb-core kmod-usb-net kmod-usb-net-cdc-ether kmod-usb-net-cdc-wdm kmod-usb-serial kmod-usb-serial-option
Still, the device /dev/cdc-wdm0 is not present.
Signal Information : When trying to retrieve signal information with uqmi, I received the following error:
uqmi -d /dev/cdc-wdm0 --get-signal-info
Output: Failed to open device.
Despite all these efforts, I’m unable to get the modem to work. If anyone has any suggestions or additional troubleshooting steps I might have missed, I would greatly appreciate your help!
Thank you!
AndrewZ
September 22, 2024, 1:02pm
2
Show the output of cat /sys/kernel/debug/usb/devices
2 Likes
root@OpenWrt:~# cat /sys/kernel/debug/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 0
frollic
September 22, 2024, 2:37pm
4
please use the </> button for wrapping all cli output
cezary
September 22, 2024, 2:45pm
5
Mr-persian:
R11e-LTE6
install comgt-ncm, select ncm as proto and /dev/ttyACM0 as device (or /dev/ttyACM1 - I don't remember exactly.).
1 Like
AndrewZ
September 22, 2024, 3:27pm
8
{
"up": false,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"proto": "dhcp",
"device": "wan",
"data": {
}
}
cezary
September 22, 2024, 3:52pm
10
proto dhcp and device wan. Have you read what you were supposed to change to?
1 Like
yes but i cant see ncm to set as protocol
root@OpenWrt:~# cat /sys/kernel/debug/usb/devices
T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.15
S: Manufacturer=Linux 5.15.162 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.0.auto
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= 4 Ivl=256ms
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2cd2 ProdID=0004 Rev=ff.ff
S: Manufacturer=MikroTik
S: Product=R11e-LTE6
S: SerialNumber=000000000000
C:* #Ifs= 8 Cfg#= 1 Atr=e0 MxPwr= 2mA
A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=03
A: FirstIf#= 2 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01
A: FirstIf#= 4 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01
I:* If#= 0 Alt= 0 #EPs= 1 Cls=e0(wlcon) Sub=01 Prot=03 Driver=rndis_host
E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=1ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=cdc_acm
E: Ad=84(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=cdc_acm
E: Ad=86(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 6 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=ff Driver=(none)
E: Ad=87(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 7 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=ff Driver=(none)
E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev= 5.15
S: Manufacturer=Linux 5.15.162 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.0.auto
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= 4 Ivl=256ms
T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 1
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=1d6b ProdID=0002 Rev= 5.15
S: Manufacturer=Linux 5.15.162 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.1.auto
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= 4 Ivl=256ms
T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 0
B: Alloc= 0/800 us ( 0%), #Int= 0, #Iso= 0
D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1
P: Vendor=1d6b ProdID=0003 Rev= 5.15
S: Manufacturer=Linux 5.15.162 xhci-hcd
S: Product=xHCI Host Controller
S: SerialNumber=xhci-hcd.1.auto
C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 4 Ivl=256ms
root@OpenWrt:~# ifstatus LTE
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 370,
"l3_device": "eth1",
"proto": "ncm",
"updated": [
"data"
],
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
],
"ipv6-address": [
],
"ipv6-prefix": [
],
"ipv6-prefix-assignment": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
]
},
"data": {
"manufacturer": "\"mikrotik\""
}
}
still have problem:
root@OpenWrt:~# ifstatus LTE
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 53,
"l3_device": "eth1",
"proto": "ncm",
"updated": [
"data"
],
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
],
"ipv6-address": [
],
"ipv6-prefix": [
],
"ipv6-prefix-assignment": [
],
"route": [
],
"dns-server": [
"4.2.2.4",
"8.8.8.8"
],
"dns-search": [
],
"neighbors": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
]
},
"data": {
"manufacturer": "\"mikrotik\""
```its start working but after few minutes pingwill be gone and not working .
mrhaav
September 23, 2024, 7:21am
17