The connection via Ethernet doesn't work after a while, again and again [solved]

Official Hardware Classic Yún
2

After some search, I discovered that my problem could be related to this one, so to this and finally to this: "ar9331's usb stability issue". In few words, it could be a hardware problem related to the AR9331 chip at all.

I tried to upgrade from hotplug2 to standard udev at Openwrt as said here by sonnyyu but it did not solve the problem.

I report what I made by following the sonnyyu' istructions (not at all):

1. Access the Linino shell (through ssh):

ssh root@arduino.local

2. Run the command:

opkg update

3. Run the command:

opkg remove hotplug2

4. Run the command (I use the vim editor, you can use the nano):

vim /etc/init.d/boot

5. Even if sonnyyu stated the following code

#killall -q hotplug2
        #[ -x /sbin/hotplug2 ] && /sbin/hotplug2 --override --persistent \
                       # --set-rules-file /etc/hotplug2.rules \
                       #--set-coldplug-cmd /sbin/udevtrigger \
                       #--max-children 1 >/dev/null 2>&1 &

I didn't found the above code in the '/etc/init.d/boot' file. So, I didn't do anything with that since I thought sonnyyu wanted to mean to comment out it, if present.
6. Run the command:

reboot

Note: After running the above command I was logget out from the shell. I waited quite a while but I can no longer access the shell so I removed and restored power to the Arduino Yun.
7. Run the command:

vim /etc/init.d/udev

8. Add the following code to the '/etc/init.d/udev' file:

#!/bin/sh /etc/rc.common
START=03
start () {
udevd --daemon
}
stop() {
killall -9 udevd
}

9. Run the command:

chmod  755 /etc/init.d/udev

10. Run the command:

/etc/init.d/udev enable

11. Run the command:

/etc/init.d/udev start