Does not see the network in "N" mode.

[mj4444ru]

I’m not sure what the question is at the address, but I’ll ask it.

In connection with updating the ubuntu kernel from 5.0 to 5.3, I had to install update #158, #159.

Now my rtl8192eu adapter does not see the network if it works in "Only N" mode. However, she sees her in "N/G" mode.

lshw -class network ethernet physical wireless broadcast=yes driver=rtl8192eu multicast=yes wireless=IEEE 802.11bgn

iwlist scan ESSID:"AP" Protocol:IEEE 802.11bgn Mode:Master Frequency:2.432 GHz (Channel 5) Encryption key:on Bit Rates:144 Mb/s Extra:rsn_ie=30140100000fac040100000fac040100000fac020c00 IE: IEEE 802.11i/WPA2 Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK Quality=98/100 Signal level=-44 dBm
Extra:fm=0003 Router Data ath0 | 2:50:25 | 144M | 144M | HT20SGI | -41 | -95 | 54

From these data it can be seen that the router and adapter is operating in N mode.

Android and Windows normally see the network and connect to the router in "Only N" mode. Ubuntu also worked fine before updating the drivers. What could be the problem and how to make the adapter see the network in "Only N" mode?

[ZaidaZadkiel]

just to confirm it did work on my device

just installed with $ ./install_wifi.sh

dmesg ... [ 120.001647] usb 3-3: new high-speed USB device number 4 using xhci_hcd [ 120.149997] usb 3-3: New USB device found, idVendor=2c4e, idProduct=0100, bcdDevice= 2.00 [ 120.149999] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 120.150001] usb 3-3: Product: 802.11n NIC [ 120.150002] usb 3-3: Manufacturer: Realtek [ 120.150004] usb 3-3: SerialNumber: 00e04c000001

$ uname -a Linux zaida-medranita 5.3.0-28-generic #30~18.04.1-Ubuntu SMP Fri Jan 17 06:14:09 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ iwconfig wlx386b1c01d2f1 IEEE 802.11bgn ESSID:"El riso 21" Nickname:"WIFI@REALTEK" Mode:Managed Frequency:2.452 GHz Access Point: 48:8D:36:F6:A4:AF
Bit Rate:144.4 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off Power Management:off Link Quality=98/100 Signal level=-67 dBm Noise level=0 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0

$ readlink /sys/class/net/wlx386b1c01d2f1/device/driver ../../../../../../bus/usb/drivers/rtl8192eu

[rohith7342]

hi guys the procedure which was given as per deabin based follow the instructions if the instructions dosent work go to through the commands given below cd rtl8192eu-linux-driver sudo make sudo make install reboot after rebooting check usb of external wifi is connected or not ,check WIFI it will be connected the above process i tried it works successfully .after so many processes i have tried all processes for 2 days. check it out FYIP

[mj4444ru]

Just in case, before the above recommendations I performed "git pull". My adapter saw the router in "Only N" mode.

Ubuntu often started updating something in the bootloader and on the system. The previous post helped me reanimate Wi-Fi.

It would be great to put this information for Debian and Ubuntu users in "README.md"

Thanks.

[CGarces]

@mj4444ru fell free to send a PR updating the documentation.

[mj4444ru]

Unfortunately, I was mistaken, because I set the mode to "Only G" instead of the "Only N" mode for verification. In fact, the advice above helped make the device operational, but the device still does not see the network in "Only N" mode. Prior to the upgrade, the kernel all worked well. The system also has an old WiFi adapter, which cannot work in N mode, but still sees the router in "Only N" mode.

How can I help diagnose the problem?