Ubuntu 18.04 freezes when connect to a wifi network

[mikemanso]

Hi All,

We've a software running on ubuntu 18.04 and we use a wifi dongle from TP-LINK - TL-WN725N.

Most of the times it works perfect. In some situations (my guess is that it's something related with the wifi router used by the internet company) we connect the dongle, the wifi networks appear with no issues and when we choose the SSID and put the password after pressing the connect button the system just hangs and we need to power off / on the machine.

We've used this dongle with your drives in many many occasions with no issues at all. But sometimes, we get reports about this happening. We had the chance to see this happening but we can't figure out what's causing the issue.

We're running kernel 4.15.0-76-generic and we compile the actual version of the driver.

Any clue about what might be happening? I can't get hold on logs because when I connect to the wifi, like I wrote above, the system just hangs.

When I plug the dongle on the machine, I get this on the logs:

[ 96.154115] usb 1-3.1: new high-speed USB device number 8 using xhci_hcd [ 96.254533] usb 1-3.1: New USB device found, idVendor=0bda, idProduct=8179 [ 96.254540] usb 1-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 96.254544] usb 1-3.1: Product: 802.11n NIC [ 96.254548] usb 1-3.1: Manufacturer: Realtek [ 96.254552] usb 1-3.1: SerialNumber: 00E04C0001 [ 96.348783] Chip Version Info: CHIP_8188E_Normal_Chip_TSMC_D_CUT_1T1R_RomVer(0) [ 96.370480] EEPROM ID = 0x8129 [ 96.371338] usbcore: registered new interface driver r8188eu [ 96.419070] cfg80211: Loading compiled-in X.509 certificates for regulatory database [ 96.425693] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 96.441375] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 96.442867] R8188EU: Firmware Version 11, SubVersion 1, Signature 0x88e1 [ 96.777805] MAC Address = 50:3e:aa:27:70:a7 [ 96.780554] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 96.845687] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 98.147406] R8188EU: INFO indicate disassoc

Thanks in advance.