Realktek driver rtl8192eu stops working after update to new kernel 5.19

Question

Wifi stopped working after kernel upgrade to 5.19 on Ubuntu 22.04. After upgrading my kernel, I usually run

cd rtl8192eu-linux-driver
make clean
make
sudo make install
sudo modprobe 8192eu

based on this post, and that sort of restarts the driver and the wifi starts working again. But, this time, I am getting some errors

xander@xander:~/rtl8192eu-linux-driver/rtl8192eu-linux-driver$ make
make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/5.19.0-051900-generic/build M=/home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver  modules
make[1]: Entering directory '/usr/src/linux-headers-5.19.0-051900-generic'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-11 (Ubuntu 11.3.0-5ubuntu1) 11.3.0
  You are using:           gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0
  CC [M]  /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.o
In file included from /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/include/osdep_service.h:45,
                 from /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/include/drv_types.h:32,
                 from /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.c:22:
/home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.c: In function ‘rtw_cmd_thread’:
/home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/include/osdep_service_linux.h:165:31: error: implicit declaration of function ‘complete_and_exit’ [-Werror=implicit-function-declaration]
  165 |         #define thread_exit() complete_and_exit(NULL, 0)
      |                               ^~~~~~~~~~~~~~~~~
/home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.c:759:9: note: in expansion of macro ‘thread_exit’
  759 |         thread_exit();
      |         ^~~~~~~~~~~
/home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.c:761:1: error: control reaches end of non-void function [-Werror=return-type]
  761 | }
      | ^
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:249: /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver/core/rtw_cmd.o] Error 1
make[1]: *** [Makefile:1849: /home/xander/rtl8192eu-linux-driver/rtl8192eu-linux-driver] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-5.19.0-051900-generic'
make: *** [Makefile:1700: modules] Error 2

Is this based on the new networking updates in 5.19? Is there a way to get the wifi working again?

Here is some more info:

xander@xander:~$ lsusb
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 2357:0109 TP-Link TL-WN823N v2/v3 [Realtek RTL8192EU]
Bus 003 Device 004: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 003 Device 003: ID 8086:0808 Intel Corp. USB PnP Sound Device
Bus 003 Device 006: ID 05ac:12a8 Apple, Inc. iPhone 5/5C/5S/6/SE
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

and

xander@xander:~$ sudo modprobe rtl8xxxu && sudo dmesg | grep -i rtl
[sudo] password for xander: 
[  156.327410] usb 3-4: rtl8192eu_parse_efuse: dumping efuse (0x200 bytes):
[  156.327466] usb 3-4: RTL8192EU rev B (SMIC) 2T2R, TX queues 3, WiFi=1, BT=0, GPS=0, HI PA=0
[  156.327468] usb 3-4: RTL8192EU MAC: 7c:c2:c6:09:79:0f
[  156.327470] usb 3-4: rtl8xxxu: Loading firmware rtlwifi/rtl8192eu_nic.bin
[  157.136472] usb 3-4: rtl8192eu_rx_iqk_path_b: Path B RX IQK failed!
[  157.161142] usb 3-4: rtl8192eu_rx_iqk_path_b: Path B RX IQK failed!
[  157.224386] usb 3-4: rtl8192eu_rx_iqk_path_b: Path B RX IQK failed!
[  157.248480] usb 3-4: rtl8192eu_rx_iqk_path_b: Path B RX IQK failed!
[  157.253666] usbcore: registered new interface driver rtl8xxxu
[  157.266091] rtl8xxxu 3-4:1.0 wlx7cc2c609790f: renamed from wlan0

after downgrading the kernel to 5.16.20 I get:

xander@xander:~$ sudo dmesg | grep wlx
[sudo] password for xander: 
[    4.654790] rtl8192eu 3-4:1.0 wlx7cc2c609790f: renamed from wlan0
[    9.618667] IPv6: ADDRCONF(NETDEV_CHANGE): wlx7cc2c609790f: link becomes ready

On the 5.19 the output of this command is blank.

Are you using Ubuntu 22.04 LTS? as there is no upgrade to the 5.19 kernel? (Ubuntu 22.04.1 was the recent upgrade and the first upgraded kernel doesn't arrive till 22.04.2 which is still months into the future) Are you using Pop OS or some other OS? — guiverc, Aug 06 '22 at 11:45
I am using 22.04 LTS, but manually upgraded the kernel via uktools. — apg, Aug 06 '22 at 11:50
OS: Ubuntu 22.04.1 LTS x86_64 and Kernel: 5.19.0-051900-generic — apg, Aug 06 '22 at 11:51
Kernel 5.19 is very new. Do you have an updated source code for the driver with support for 5.19? Isn't there a built in rtl8192eu module? — mikewhatever, Aug 06 '22 at 12:49
I am doing the same on 5.18 and getting the same make error. I am just using the old driver, which is the only one available. Is it possible I need to upgrade gcc to version 11.03, to match the one used with the kernel? — apg, Aug 06 '22 at 12:53
Please edit your question to include the result of the terminal commands: lsusb and sudo modprobe rtl8xxxu && sudo dmesg | grep -i rtl — chili555, Aug 06 '22 at 13:00
It looks like your wireless started right up, yes? Is rtl8xxxu blacklisted? Does it scan and see networks? nmcli device wifi list No need to post the results, just tell us if it sees networks or if there is some error or warning. — chili555, Aug 06 '22 at 13:13
In settings, wifi has disappeared as an option, so I can't scan or see networks. I did not blacklist. — apg, Aug 06 '22 at 13:17
I just downgraded the kernel to 5.16.20, and now the dkms installs and works. Do you think the driver just isn't compatible with the newest kernel? I added the output. I can try and reboot into the new kernel and provide the output from that? — apg, Aug 06 '22 at 13:51

score 1 · Accepted Answer · answered Aug 09 '22 at 06:46

1

This means that the driver you are using is not compatible with the 5.19 kernel.

You have some options:

Patch the driver to make it compatible.
Wait till somebody else does p.1.
Use a compatible kernel.

answered Aug 09 '22 at 06:46

Pilot6

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I used 5.16.20 and it worked. 5.18 did not. I think the version of gcc used to compile the driver is not the same as that for kernel 5.18 and 5.19. Is there a good wifi adapter for Ubuntu which is very compatible with new kernel's etc? Or would any adapter have this problem in this setting? – apg Aug 09 '22 at 09:34

Realktek driver rtl8192eu stops working after update to new kernel 5.19

1 Answers1