Hello, I’ve got a Raspberry 3b with a TELIT HAT which used to work until last weekend. I thought it may be a SDK I compiled so:
- I have gone back, cut a new SDXC card with a vanilla Raspian Bullseye,
- (Un)plugged each cable at least twice,
- swapped the HAT to another Raspberry for same result and back.
In short, I am stuck. The device exists, but it isn’t responding.
admin@sonia:~ $ lsusb
Bus 001 Device 004: ID 1bc7:1206 Telit Wireless Solutions LE910C4-EU
Bus 001 Device 003: ID 0424:ec00 Microchip Technology, Inc. (formerly SMSC) SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Microchip Technology, Inc. (formerly SMSC) SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
admin@sonia:~ $ atcom AT
[ERR] Timeout, couldn’t get response
Takes 10 seconds and times out. minicom freezes on attempt.
The wwan0 adapter has an IP and seems in working order, but has no connection:
wwan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.225.54 netmask 255.255.255.0 broadcast 192.168.225.255
inet6 fe80::fdab:2759:50e:cfe7 prefixlen 64 scopeid 0x20
ether e6:0c:62:f0:c6:c5 txqueuelen 1000 (Ethernet)
RX packets 216 bytes 13175 (12.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 343 bytes 27100 (26.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
The SIM shows no connection to the network, even there is plenty of coverage (-66dBm) where it’s at. I have a bad feeling this could be a hardware issue. How to check?
Remote support is enabled and token available.
Thanks a lot