8821cu on Ubuntu 22.04 5.19.0-32 ERROR

[leongithub]

sudo ./dkms-install.sh

About to run dkms install steps...
Error! DKMS tree already contains: rtl8821CU-5.4.1
You cannot add the same module/version combo more than once.

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
'make' KVER=5.19.0-32-generic....................................(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8821CU: 5.4.1 not found
Error! Bad return status for module build on kernel: 5.19.0-32-generic (aarch64)
Consult /var/lib/dkms/rtl8821CU/5.4.1/build/make.log for more information.

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area...
'make' KVER=5.19.0-32-generic....................................(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8821CU: 5.4.1 not found
Error! Bad return status for module build on kernel: 5.19.0-32-generic (aarch64)
Consult /var/lib/dkms/rtl8821CU/5.4.1/build/make.log for more information.
Finished running dkms install steps.

/var/lib/dkms/rtl8821CU/5.4.1/build/make.log

DKMS make.log for rtl8821CU-5.4.1 for kernel 5.19.0-32-generic (aarch64)
2023年 02月 12日 星期日 09:31:39 CST
make ARCH=arm64 CROSS_COMPILE= -C /lib/modules/5.19.0-32-generic/build M=/var/lib/dkms/rtl8821CU/5.4.1/build modules
make[1]: 进入目录“/usr/src/linux-headers-5.19.0-32-generic”
warning: the compiler differs from the one used to build the kernel
The kernel was built by: aarch64-linux-gnu-gcc (Ubuntu 11.3.0-1ubuntu122.04) 11.3.0
You are using: gcc (Ubuntu 11.3.0-1ubuntu122.04) 11.3.0
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_cmd.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_security.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_debug.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_io.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_ioctl_query.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_ioctl_set.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_ieee80211.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mlme.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mlme_ext.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_mi.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_wlan_util.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_vht.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_pwrctrl.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_rf.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_recv.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_sta_mgt.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_ap.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/mesh/rtw_mesh.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/mesh/rtw_mesh_pathtbl.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/mesh/rtw_mesh_hwmp.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_xmit.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_p2p.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_rson.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_tdls.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_br_ext.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_iol.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_sreset.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_btcoex_wifionly.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_btcoex.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_beamforming.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_odm.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_rm.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/rtw_rm_fsm.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/core/efuse/rtw_efuse.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/osdep_service.o
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/osdep_service.c: In function ‘rtw_change_ifname’:
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/osdep_service.c:2494:28: warning: passing argument 1 of ‘_rtw_memcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
2494 | _rtw_memcpy(pnetdev->dev_addr, adapter_mac_addr(padapter), ETH_ALEN);
| ~~~~~~~^~~~~~~~~~
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/osdep_service.c:925:24: note: expected ‘void *’ but argument is of type ‘const unsigned char *’
925 | void _rtw_memcpy(void *dst, const void src, u32 sz)
| ~~~~~~^~~
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/os_intfs.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/usb_intf.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/usb_ops_linux.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_linux.o
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_linux.c: In function ‘rtw_mp_efuse_set’:
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_linux.c:9781:46: warning: passing argument 1 of ‘_rtw_memcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
9781 | _rtw_memcpy(padapter->pnetdev->dev_addr, get_hal_mac_addr(padapter), ETH_ALEN); / set mac addr to net_device */
| ~~~~~~~~~~~~~~~~~^~~~~~~~~~
In file included from /var/lib/dkms/rtl8821CU/5.4.1/build/include/drv_types.h:27,
from /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_linux.c:17:
/var/lib/dkms/rtl8821CU/5.4.1/build/include/osdep_service.h:296:35: note: expected ‘void *’ but argument is of type ‘const unsigned char *’
296 | extern void _rtw_memcpy(void *dec, const void *sour, u32 sz);
| ~~~~~~^~~
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/xmit_linux.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/mlme_linux.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/recv_linux.o
CC [M] /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.o
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c: In function ‘rtw_cfg80211_ch_switch_notify’:
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c:420:9: error: too few arguments to function ‘cfg80211_ch_switch_notify’
420 | cfg80211_ch_switch_notify(adapter->pnetdev, &chdef);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /var/lib/dkms/rtl8821CU/5.4.1/build/include/osdep_service_linux.h:93,
from /var/lib/dkms/rtl8821CU/5.4.1/build/include/osdep_service.h:50,
from /var/lib/dkms/rtl8821CU/5.4.1/build/include/drv_types.h:27,
from /var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c:17:
./include/net/cfg80211.h:7967:6: note: declared here
7967 | void cfg80211_ch_switch_notify(struct net_device dev,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c: At top level:
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c:9416:20: error: initialization of ‘int ()(struct wiphy *, struct net_device , unsigned int)’ from incompatible pointer type ‘int ()(struct wiphy *, struct net_device *)’ [-Werror=incompatible-pointer-types]
9416 | .stop_ap = cfg80211_rtw_stop_ap,
| ^~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c:9416:20: note: (near initialization for ‘rtw_cfg80211_ops.stop_ap’)
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c: In function ‘rtw_wdev_unregister’:
/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.c:9682:17: error: ‘struct wireless_dev’ has no member named ‘current_bss’
9682 | if (wdev->current_bss) {
| ^~
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:257：/var/lib/dkms/rtl8821CU/5.4.1/build/os_dep/linux/ioctl_cfg80211.o] 错误 1
make[1]: *** [Makefile:1850：/var/lib/dkms/rtl8821CU/5.4.1/build] 错误 2
make[1]: 离开目录“/usr/src/linux-headers-5.19.0-32-generic”
make: *** [Makefile:2217：modules] 错误 2

I recently upgraded the kernel version and reinstalled it and it went wrong. ask for help

[Terminator637]

Hi! Got the same trouble. Ubuntu 22.04 kernel 5.19.0-32-generic

[jfischoff]

same problem

[bayeswhu]

Hi! Got the same trouble. Ubuntu 22.04 kernel 5.19.0-32-generic

same here

[Abathi]

Got the same error!

[johnnyyan]

Is there a workaround?

[yujiang0030]

Hi, I had got the same error. Then I used this driver https://github.com/morrownr/8821cu-20210916 to replace the old one, and the network recoverd.

[Dephrilibrium]

Hi, I had got the same error. Then I used this driver https://github.com/morrownr/8821cu-20210916 to replace the old one, and the network recoverd.

Can confirm, this one compiles without errors and works afterwards.

But I have one additional question, someone may know to fix.

Very often my WiFi won't work anymore, when I reboot after an update/upgrade my Ubuntu 22.04 LTS by:
sudo apt update & sudo apt upgrade
Then the WiFi-Adapter won't work anymore until I completely recompile "reinstall" it (only uninstall and install without recompiling won't work).

I wrote some automated script to do that for me, so that I don't have to input the commands all the time by hand:

#!/bin/bash
# Change into sourcecode directory
#cd ~/Downloads/rtl8821cu/            # Previous repo (not working currently)
cd ~/Downloads/8821cu-20210916       # Current working repo
# Grab changes if there are some
git pull
sudo make clean
sudo make
sudo make uninstall
sudo make install
#---------------
#Edit: Optional Modprobe
#sudo modprobe 8821cu
#---------------

But that is soooo annoying, because I need to wait that the driver got recompiled and reinstalled -_-.
So, has anyone the same problem and know how to avoid that behaviour?

Kind regards,
Deph

[jfischoff]

@Dephrilibrium's steps worked for me

[nosun]

@Dephrilibrium's steps worked for me

And maybe add another command to make it work

sudo modprobe 8821cu

[Dephrilibrium]

@Dephrilibrium's steps worked for me

And maybe add another command to make it work

sudo modprobe 8821cu

Thanks for the hint.
Personally I use the auto modeswitch described by the author in the repositories README.md, but I will add it in a second.

Kind regards,
Deph

[braunerdev]

@Dephrilibrium's steps worked for me
Thank you Bro! no more cables to work hehehe

[scriptkid2222]

Olá, eu tive o mesmo erro. Então usei este driver https://github.com/morrownr/8821cu-20210916 para substituir o antigo e a rede recuperou.

this one worked

[RyanMan56]

Hi, I had got the same error. Then I used this driver https://github.com/morrownr/8821cu-20210916 to replace the old one, and the network recoverd.

Cheers this worked for me :)

[BassHero]

Hi, I had got the same error. Then I used this driver https://github.com/morrownr/8821cu-20210916 to replace the old one, and the network recoverd.

Can confirm, this one compiles without errors and works afterwards.

But I have one additional question, someone may know to fix.

Very often my WiFi won't work anymore, when I reboot after an update/upgrade my Ubuntu 22.04 LTS by: sudo apt update & sudo apt upgrade Then the WiFi-Adapter won't work anymore until I completely recompile "reinstall" it (only uninstall and install without recompiling won't work).

I wrote some automated script to do that for me, so that I don't have to input the commands all the time by hand:

#!/bin/bash
# Change into sourcecode directory
#cd ~/Downloads/rtl8821cu/            # Previous repo (not working currently)
cd ~/Downloads/8821cu-20210916       # Current working repo
# Grab changes if there are some
git pull
sudo make clean
sudo make
sudo make uninstall
sudo make install
#---------------
#Edit: Optional Modprobe
#sudo modprobe 8821cu
#---------------

But that is soooo annoying, because I need to wait that the driver got recompiled and reinstalled -_-. So, has anyone the same problem and know how to avoid that behaviour?

Kind regards, Deph

Unfortunately, it not works for me. Until a definitive solution shows up, I will keep the kernel 5.17.15 as default in my Ubuntu 22.04.

[bensontan]

rtl8821CU/8821cu-20210916/hal/hal_com.c:13781:17: error: too many arguments to function ‘rtw_halmac_bf_cfg_csi_rate’
13781 | rtw_halmac_bf_cfg_csi_rate(adapter_to_dvobj(adapter),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/benson/rtl8821CU/8821cu-20210916/hal/hal_com.c:23:
/home/benson/rtl8821CU/8821cu-20210916/hal/../../hal/hal_halmac.h:229:5: note: declared here
229 | int rtw_halmac_bf_cfg_csi_rate(struct dvobj_priv *d, u8 rssi, u8 current_rate,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~

comment out as following in hal_com.c: #13781
rtw_halmac_bf_cfg_csi_rate(adapter_to_dvobj(adapter),
p_dm_odm->rssi_min,
bf_info->cur_csi_rpt_rate,
fix_rate_enable, &new_csi_rate_idx); // , &rrsr_54_en);

	temp_rrsr = rtw_read32(adapter, REG_RRSR);
	// if (rrsr_54_en == 1)
	// 	temp_rrsr |= RRSR_54M;
	// else if (rrsr_54_en == 0)
	// 	temp_rrsr &= ~RRSR_54M;
	rtw_phydm_set_rrsr(adapter, temp_rrsr, FALSE);

[Dephrilibrium]

Heyho everyone,

yesterday I've made an update/upgrade of my ubuntu 22.04 LTS. Thereby, the latest kernel (6.2.0-26-generic) was installed, and my dongle showed no WiFi anymore in the taskbar network-window.

After playing around and a lot of restarts and recompile-tries, I came up with the idea, that linux is may confused by the different drivers, still stored within the different kernel-version folders in /lib/modules/ (see Makefile: MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/).

Therefore I decided to delete all my older kernel version folders (sudo rm -r 5*), restarted the PC and recompiled with my script above #206 (comment). One restart later, everything worked well again.

Hope that helps, if some is struggling with the same problem.

Deph