AR-750s and Huawei E3372 - constant disconnecting

hedders · 2019-09-23T09:50:28.595Z

Hi! As the title suggests, I have just bought a 750 which works great with repeating wifi networks or with ethernet connections. However, when I try to use it with my Huawei E3372 4G dongle, it sees it correctly but constantly connects and then disconnects. The dongle functions normally when connected to a PC directly.

Any ideas? I’m new to these devices, so not sure what logs or diagnostic info I could provide to be helpful.

Thank you very much!

robotluo · 2019-09-23T10:39:26.898Z

Can you provide your system log?
You can execute logread in the background.

hedders · 2019-09-23T10:58:41.166Z

Hi, thanks for the fast response!

Because I am a new user I can’t provide the log as an attachment or upload the whole log, so I am pasting an extract below. The rest just repeats this.

Thanks for your help!

Mon
Sep 23 10:46:41 2019 kern.info kernel: [ 233.158674] usb 1-1: new
high-speed USB device number 32 using ehci-platform
Mon Sep 23 10:46:41 2019 kern.info kernel: [ 233.412457] usb 1-1: New
USB device found, idVendor=12d1, idProduct=14dc
Mon Sep 23 10:46:41 2019 kern.info kernel: [ 233.419438] usb 1-1: New
USB device strings: Mfr=1, Product=2, SerialNumber=0
Mon Sep 23 10:46:41 2019 kern.info kernel: [ 233.426833] usb 1-1:
Product: HUAWEI_MOBILE
Mon Sep 23 10:46:41 2019 kern.info kernel: [ 233.431178] usb 1-1:
Manufacturer: HUAWEI_MOBILE
Mon Sep 23 10:46:41 2019 kern.info kernel: [ 233.816486] cdc_ether
1-1:1.0 eth1: register ‘cdc_ether’ at usb-ehci-platform.0-1, CDC
Ethernet Device, 0c:5b:8f:27:9a:64
Mon Sep 23 10:46:42 2019 kern.info kernel: [ 233.988952] usb-storage
1-1:1.2: USB Mass Storage device detected
Mon Sep 23 10:46:42 2019 kern.info kernel: [ 234.068637] scsi host0:
usb-storage 1-1:1.2
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
disabled
Mon Sep 23 10:46:42 2019 kern.err kernel: [ 234.229336] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
enabled
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Network device ‘eth1’
link is up
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ has
link connectivity
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
setting up now
Mon Sep 23 10:46:42 2019 daemon.notice netifd: tethering (17013):
udhcpc: received SIGTERM
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
now down
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
disabled
Mon Sep 23 10:46:42 2019 kern.err kernel: [ 234.375390] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:42 2019 kern.err kernel: [ 234.382112] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:42 2019 kern.err kernel: [ 234.388628] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
enabled
Mon Sep 23 10:46:42 2019 daemon.notice netifd: Interface ‘tethering’ is
setting up now
Mon Sep 23 10:46:42 2019 daemon.warn dnsmasq[4732]: no servers found in
/tmp/resolv.conf.auto, will retry
Mon Sep 23 10:46:43 2019 kern.notice kernel: [ 235.099448] scsi
0:0:0:0: Direct-Access HUAWEI TF CARD Storage 2.31 PQ: 0 ANSI: 2
Mon Sep 23 10:46:43 2019 kern.notice kernel: [ 235.113991] sd 0:0:0:0:
[sdb] Attached SCSI removable disk
Mon Sep 23 10:46:43 2019 daemon.notice netifd: tethering (17447):
udhcpc: started, v1.28.3
Mon Sep 23 10:46:44 2019 daemon.notice netifd: tethering (17447):
udhcpc: sending discover
Mon Sep 23 10:46:44 2019 daemon.notice netifd: tethering (17447):
udhcpc: sending select for 192.168.8.100
Mon Sep 23 10:46:44 2019 daemon.notice netifd: tethering (17447):
udhcpc: lease of 192.168.8.100 obtained, lease time 86400
Mon Sep 23 10:46:45 2019 daemon.notice netifd: Interface ‘tethering’ is
now up
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: reading
/tmp/resolv.conf.auto
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain test
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain onion
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain localhost
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain local
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain invalid
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain bind
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain lan
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using nameserver
192.168.8.1#53
Mon Sep 23 10:46:45 2019 daemon.info dnsmasq[4732]: using nameserver
192.168.8.1#53
Mon Sep 23 10:46:48 2019 kern.info kernel: [ 240.374182] usb 1-1: USB
disconnect, device number 32
Mon Sep 23 10:46:48 2019 kern.info kernel: [ 240.418610] cdc_ether
1-1:1.0 eth1: unregister ‘cdc_ether’ usb-ehci-platform.0-1, CDC Ethernet
Device
Mon Sep 23 10:46:48 2019 daemon.notice netifd: Network device ‘eth1’
link is down
Mon Sep 23 10:46:48 2019 daemon.notice netifd: Interface ‘tethering’ has
link connectivity loss
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 240.988638] usb 1-1: new
high-speed USB device number 33 using ehci-platform
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.250080] usb 1-1: New
USB device found, idVendor=12d1, idProduct=14dc
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.257119] usb 1-1: New
USB device strings: Mfr=1, Product=2, SerialNumber=0
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.264556] usb 1-1:
Product: HUAWEI_MOBILE
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.268881] usb 1-1:
Manufacturer: HUAWEI_MOBILE
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.461762] cdc_ether
1-1:1.0 eth1: register ‘cdc_ether’ at usb-ehci-platform.0-1, CDC
Ethernet Device, 0c:5b:8f:27:9a:64
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.529629] usb-storage
1-1:1.2: USB Mass Storage device detected
Mon Sep 23 10:46:49 2019 kern.info kernel: [ 241.588800] scsi host0:
usb-storage 1-1:1.2
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
disabled
Mon Sep 23 10:46:49 2019 kern.err kernel: [ 241.645914] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
enabled
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Network device ‘eth1’
link is up
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ has
link connectivity
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
setting up now
Mon Sep 23 10:46:49 2019 daemon.notice netifd: tethering (17447):
udhcpc: received SIGTERM
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
now down
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
disabled
Mon Sep 23 10:46:49 2019 kern.err kernel: [ 241.730174] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:49 2019 kern.err kernel: [ 241.736877] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:49 2019 kern.err kernel: [ 241.743417] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
enabled
Mon Sep 23 10:46:49 2019 daemon.notice netifd: Interface ‘tethering’ is
setting up now
Mon Sep 23 10:46:49 2019 daemon.warn dnsmasq[4732]: no servers found in
/tmp/resolv.conf.auto, will retry
Mon Sep 23 10:46:50 2019 daemon.notice netifd: tethering (17997):
udhcpc: started, v1.28.3
Mon Sep 23 10:46:50 2019 kern.notice kernel: [ 242.610099] scsi
0:0:0:0: Direct-Access HUAWEI TF CARD Storage 2.31 PQ: 0 ANSI: 2
Mon Sep 23 10:46:50 2019 kern.notice kernel: [ 242.624436] sd 0:0:0:0:
[sdb] Attached SCSI removable disk
Mon Sep 23 10:46:50 2019 daemon.notice netifd: tethering (17997):
udhcpc: sending discover
Mon Sep 23 10:46:50 2019 daemon.notice netifd: tethering (17997):
udhcpc: sending select for 192.168.8.100
Mon Sep 23 10:46:51 2019 daemon.notice netifd: tethering (17997):
udhcpc: lease of 192.168.8.100 obtained, lease time 86400
Mon Sep 23 10:46:52 2019 daemon.notice netifd: Interface ‘tethering’ is
now up
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: reading
/tmp/resolv.conf.auto
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain test
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain onion
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain localhost
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain local
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain invalid
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain bind
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using local
addresses only for domain lan
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using nameserver
192.168.8.1#53
Mon Sep 23 10:46:52 2019 daemon.info dnsmasq[4732]: using nameserver
192.168.8.1#53
Mon Sep 23 10:46:53 2019 kern.info kernel: [ 245.153802] usb 1-1: USB
disconnect, device number 33
Mon Sep 23 10:46:53 2019 kern.info kernel: [ 245.185012] cdc_ether
1-1:1.0 eth1: unregister ‘cdc_ether’ usb-ehci-platform.0-1, CDC Ethernet
Device
Mon Sep 23 10:46:53 2019 daemon.notice netifd: Network device ‘eth1’
link is down
Mon Sep 23 10:46:53 2019 daemon.notice netifd: Interface ‘tethering’ has
link connectivity loss
Mon Sep 23 10:46:53 2019 kern.info kernel: [ 245.748610] usb 1-1: new
high-speed USB device number 34 using ehci-platform
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.012249] usb 1-1: New
USB device found, idVendor=12d1, idProduct=14dc
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.019248] usb 1-1: New
USB device strings: Mfr=1, Product=2, SerialNumber=0
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.026628] usb 1-1:
Product: HUAWEI_MOBILE
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.030962] usb 1-1:
Manufacturer: HUAWEI_MOBILE
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.361524] cdc_ether
1-1:1.0 eth1: register ‘cdc_ether’ at usb-ehci-platform.0-1, CDC
Ethernet Device, 0c:5b:8f:27:9a:64
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.526203] usb-storage
1-1:1.2: USB Mass Storage device detected
Mon Sep 23 10:46:54 2019 kern.info kernel: [ 246.672527] scsi host0:
usb-storage 1-1:1.2
Mon Sep 23 10:46:55 2019 daemon.notice netifd: Interface ‘tethering’ is
disabled
Mon Sep 23 10:46:55 2019 kern.err kernel: [ 246.996963] cdc_ether
1-1:1.0 eth1: kevent 12 may have been dropped

robotluo · 2019-09-23T11:04:46.727Z

It looks like the power is not enought.
Did you use our original adapter?

hedders · 2019-09-23T11:18:16.005Z

Interesting. Yes, I am using the adapter that came with the router, which is apparently outputting 2000mA at 5V.

I’ve now connected it to a higher rated PSU. Will test for a bit and report back.

hedders · 2019-09-23T12:10:33.924Z

Hi,

So, I have changed to a power supply putting out 2400mA and used a different cable. It seems to be much more stable now. I’m running some tests (downloading big files, YouTube etc) to be sure, but it looks good now. Thank you!