I’m experiencing an interesting issue with my AR750. When I open the Teams app, and intermittently if I leave it open, the WAN connection via USB tethering will go down and LuCI shows the following message in the system log:
kern.err kernel: [ 292.027378] ipheth 1-1.2:4.2: ipheth_rcvbulk_callback: urb status: -79
The topology is as follows:
The AR750 is running stock firmware at version 3.215.
I can bring the WAN back up by restarting the interface in LuCI.
alzhao
November 30, 2022, 9:59am
2
I tested a little bit and I didn’t get disconnected. I didn’t use teams to call though.
Maybe just try another cable, or power adapter.
Ok I made a little bit of progress.
I tried a different power supply, different power cable, and a different iPhone cable. None of those made a difference. The issue remained.
I did try a newer iPhone and could not recreate the issue.
Oh iPhone 12 running iOS 16.1.1 → tethering crash when opening Teams on the laptop.
Next I will try to factory reset the iPhone 12.
alzhao
December 1, 2022, 8:53am
4
Usutally a reboot of the iphone works. Have you tried?
I have tried rebooting, it doesn’t seem to help.
I’m on a business trip now, I’ll do a full reset of the phone when I get home in a few days. I’ll post here again with the results.