Hello friends, I have an issue with my router, which is an Observa Telecom VH4032N. I installed the OpenWrt version 23.5.5, and it worked fine initially. However, I encountered a problem when I installed the driver for a Realtek RTL87 network card and connected the external card to the USB port. The card works normally, but when I search for or connect to a network, the router automatically restarts itself repeatedly. I tried changing the network card to a Ralink one and installed its driver, but the same issue occurred. It is worth noting that the card works fine with OpenWrt versions 17.1.6 and 19.5.6, but when I install a different version, especially the latest one, I encounter this issue. Here is the log showing where the error occurs.
Try a powered hub.
Also try informative thread topics.
Give me a microscope, or learn to copy and paste text.
Two replies, two bashings, got to be some kind of record 
Yes, my brother, I have previously changed the power supply to a new one with the same voltage, and the same problem remained.
Oki brother.I will make a text copy
That is not the same as a powered usb hub. The theory is that the usb port on your router cannot supply enough power to run the usb network adapter.
Use powered usb hub (one that gets power from a mains power adapter) and test again.
dmesg says you are running untested usb stick, which means you have to test its stability, probably in contact with driver developer to apply some stability quirks.
https://github.com/morrownr/USB-WiFi/blob/main/home/USB_WiFi_Chipsets.md RTL8192EU might not be a good pick for your endeavor.
Here it is, my dear brother
BusyBox v1.36.1 (2024-09-23 12:34:46 UTC) built-in shell (ash)
_______ ________ __
| |.-----.-----.----.| | | |.----.| |_
| - || -__| -__| __|| | | || __|| _|
|_______||_____|_____|____||________||____||____|
-----------------------------------------------------
OpenWrt 23.05.5, r24106-10cc5fcd00
-----------------------------------------------------
=== WARNING! ========================================
There is no root password defined on this device!
Use the "passwd" command to set up a new password
in order to prevent unauthorized SSH logins.
-----------------------------------------------------
BLEEDE:~# logread -f
Nov 7 09:48:00 2024 authpriv.info dropbear[2096]: Child connection from 192.168.5.145:65467
Nov 7 09:48:03 2024 authpriv.notice dropbear[2096]: Auth succeeded with bla
password for 'root' from 192.168.5.145:65467
Nov 7 09:48:56 2024 authpriv.info dropbear[2096]: Exit (root) from <192.168
5.145:65467>: Exited normally
Nov 7 09:49:10 2024 kern.info kernel: [ 170.215900] usb 1-2.1: new high-sp
eed USB device using ehci-platform
Nov 7 09:49:10 2024 kern.info kernel: [ 170.372129] usb 1-2.1: This Realte
k USB drive (0x0bda:0x0126) is untested
Nov 7 09:49:10 2024 kern.info kernel: [ 170.378908] usb 1-2.1: Please repo
Nov 7 09:49:10 2024 kern.info kernel: [ 170.585941] usb 1-2.1: Vendor: Rea
ltek
Nov 7 09:49:10 2024 kern.info kernel: [ 170.585947] usb 1-2.1: Product: 80
20eu
Nov 7 09:49:10 2024 kern.info kernel: [ 170.589547] usb 1-2.1: Serial not
Nov 7 09:49:10 2024 kern.info kernel: [ 170.601521] usb 1-2.1: rtl18192eu_p
ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.849627] usb 1-2.1: 198: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.854629] usb 1-2.1: 1a0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.859661] usb 1-2.1: 1a8: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.864655] usb 1-2.1: 1b0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.869931] usb 1-2.1: 1b8: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.874699] usb 1-2.1: 1c0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.879733] usb 1-2.1: 1c8: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.884734] usb 1-2.1: 1d0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.889766] usb 1-2.1: 1d8: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.894770] usb 1-2.1: 1e0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.899801] usb 1-2.1: 1e8: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.904806] usb 1-2.1: 1f0: ff ff
ff ff ff ff ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.908937] usb 1-2.1: 1f8: ff ff
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.914841] usb 1-2.1: RTL8192EU r
ev B (SMC), 2T2R, TX queues 3, WiFi=1, BT=0, GPS=0, HI PA=0
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.923637] usb 1-2.1: RTL8192EU M
AC: d0:37:45:93:01:45
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 170.923909] usb 1-2.1: rtl18xxxu: L
oading firmware rtlwifi/rtl8192eu_nic.bin
Thu Nov 7 09:49:10 2024 kern.info kernel: [ 172.137863] usb 1-2.1: rtl8192eu_r
ev B
Thu Nov 7 09:49:12 2024 kern.info kernel: [ 172.139631] usb 1-2.1: rtl8192eu_r
tx_path_a: Path A RX IQK failed!
Thu Nov 7 09:49:14 2024 kern.warn kernel: [ 172.278238] usb 1-2.1: rtl8192eu_r
tx_path_a: Path A RX IQK failed!
Lats start from basics - disable all usb wifi functions and run lsusb -v, check the power subscription levels. Check same in linux PC (or in Windows in device properties) if they are exactly same.
Take a look at it, my dear brother.
I will try it, my dear brother
Bro, we are in no rush, add the info when you can.
God bless you, in a little while before I get home I will take a look at it
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