This post was finally edited by hayguen at 2022-6-17 17:16


Hi,
i got the Orange Pi Zero 2 with one single external USB Port run
with the Debian Image
Orangepizero2_3.0.0_debian_bullseye_server_linux5.16.17.7z

I had connected

• a GPS Mouse
• an USB-memory-stick (micro SD-card through mini adapter) and
• an RTL-SDR USB-dongle
  

through an USB 2.0 Hub.

Then,

• all 3 devices show up with 'lsusb'
• rtl_test does show the connected RTL-SDR with the builtin tuner type and serial
• but, when it comes to test / receive data with 'rtl_sdr', it hangs/freezes!
  

Disconnecting the USB-Hub and connecting the RTL-SDR directly to the USB-jack, 'rtl_test' and 'rtl_sdr' work fine.


I had tried with an USB 2.0 Hub similar to this model: https://www.amazon.de/dp/B08BC468MK/
A very similar USB Hub didn't show any connected devices with 'lsusb'!
Can't find other USB-Hub at home now ..

Does someone else have similar experience?
Are there problems in the USB kernel drivers?

with a 10 port USB-2.0 Hub very similar to this model: https://www.amazon.de/dp/B08R8TMZCZ/
everything works fine - even without plugging power to the Hub.

Does this indicate a too high power consumption from previous USB-Hub?
Any ideas?