➜  ~ systemd-analyze critical-chain
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.

graphical.target @1min 55.130s
└─multi-user.target @1min 55.130s
  └─plymouth-quit-wait.service @1min 51.711s +3.415s
    └─systemd-user-sessions.service @1min 51.661s +14ms
      └─remote-fs.target @1min 51.645s
        └─remote-fs-pre.target @1min 47.858s
          └─nfs-client.target @1min 47.858s
            └─gssproxy.service @1min 47.825s +31ms
              └─network.target @1min 47.812s
                └─wpa_supplicant.service @1min 47.797s +13ms
                  └─basic.target @2.246s
                    └─dbus-broker.service @2.220s +23ms
                      └─dbus.socket @2.199s
                        └─sysinit.target @2.194s
                          └─systemd-resolved.service @2.081s +112ms
                            └─systemd-tmpfiles-setup.service @1.975s +90ms
                              └─import-state.service @1.908s +27ms
                                └─local-fs.target @1.892s
                                  └─boot-efi.mount @1.867s +24ms
                                    └─boot.mount @1.848s +10ms
                                      └─systemd-fsck@dev-disk-by\x2duuid-22b66811\x2dda34\x2d4a10\x2d880a\x2dff18d03fb3a4.service @1.175s +32ms
                                        └─dev-disk-by\x2duuid-22b66811\x2dda34\x2d4a10\x2d880a\x2dff18d03fb3a4.device @584542y 2w 2d 20h 1min 47.565s +3.159s

sudo apt install git dkms 
git clone https://github.com/aircrack-ng/rtl8812au.git  
cd rtl8812au 
sudo make dkms_install

-a

Linux pctxd 6.1.0-20-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.85-1 (2024-04-11) x86_64 GNU/Linux

Package: linux-image-6.1.0-21-amd64      
Version: 6.1.90-1
New: yes
State: not installed
Priority: optional
Section: kernel
Maintainer: Debian Kernel Team 
Architecture: amd64
Uncompressed Size: 408 M
Depends: kmod, linux-base (>= 4.3~), initramfs-tools (>= 0.120+deb8u2) | linux-initramfs-tool
Recommends: firmware-linux-free, apparmor
Suggests: linux-doc-6.1, debian-kernel-handbook, grub-pc | grub-efi-amd64 | extlinux
Conflicts: linux-image-6.1.0-21-amd64-unsigned
Breaks: fwupdate (< 12-7), initramfs-tools (< 0.120+deb8u2), wireless-regdb (< 2019.06.03-1~)
Replaces: linux-image-6.1.0-21-amd64-unsigned
Provides: $kernel (= 6.1.90-1)

sudo ./dkms-install.sh

About to run dkms install steps...
Error! DKMS tree already contains: rtl8821ce-v5.2.5_1.26055.20180108.1
You cannot add the same module/version combo more than once.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area...
'make' -j4 KVER=4.19.0-kali3-amd64.......(bad exit status: 2)
Error! Bad return status for module build on kernel: 4.19.0-kali3-amd64 (x86_64)
Consult /var/lib/dkms/rtl8821ce/v5.2.5_1.26055.20180108.1/build/make.log for more information.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area...
'make' -j4 KVER=4.19.0-kali3-amd64.....(bad exit status: 2)
Error! Bad return status for module build on kernel: 4.19.0-kali3-amd64 (x86_64)
Consult /var/lib/dkms/rtl8821ce/v5.2.5_1.26055.20180108.1/build/make.log for more information.

Finished running dkms install steps.

DKMS make.log for s626-1.0.5 for kernel 6.5.0-14-generic (x86_64)
Fri Jan 12 01:17:52 PM PST 2024
make -C /lib/modules/6.5.0-14-generic/build M=/var/lib/dkms/s626/1.0.5/build SUBDIRS=/var/lib/dkms/s626/1.0.5/build
make: Entering directory '/usr/src/linux-headers-6.5.0-14-generic'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
  You are using:           gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
  CC [M]  /var/lib/dkms/s626/1.0.5/build/s626drv.o
gcc: error: unrecognized command-line option ‘-ftrivial-auto-var-init=zero’
make: *** [scripts/Makefile.build:251: /var/lib/dkms/s626/1.0.5/build/s626drv.o] Error 1
make: *** [/usr/src/linux-headers-6.5.0-14-generic/Makefile:2037: /var/lib/dkms/s626/1.0.5/build] Error 2
make: *** [Makefile:234: __sub-make] Error 2
make: Leaving directory '/usr/src/linux-headers-6.5.0-14-generic'
make: *** [Makefile:29: all] Error 2

gcc-11-base/jammy-updates,jammy-security,now 11.4.0-1ubuntu1~22.04 amd64 [installed,automatic]
gcc-11/jammy-updates,jammy-security,now 11.4.0-1ubuntu1~22.04 amd64 [installed,automatic]
gcc-12-base/jammy-updates,jammy-security,now 12.3.0-1ubuntu1~22.04 amd64 [installed,automatic]
gcc-12/jammy-updates,jammy-security,now 12.3.0-1ubuntu1~22.04 amd64 [installed,automatic]
gcc/jammy,now 4:11.2.0-1ubuntu1 amd64 [installed,automatic]
libgcc-11-dev/jammy-updates,jammy-security,now 11.4.0-1ubuntu1~22.04 amd64 [installed,automatic]
libgcc-12-dev/jammy-updates,jammy-security,now 12.3.0-1ubuntu1~22.04 amd64 [installed,automatic]
libgcc-s1/jammy-updates,jammy-security,now 12.3.0-1ubuntu1~22.04 amd64 [installed,automatic]

###############################################################################
# for kernel modeule level driver:

# Kernel directory
KDIR		:= /lib/modules/$(shell uname -r)/build
# Module directory
MODDIR		:= /lib/modules/$(shell uname -r)/kernel/drivers/sensoray

# System values
PWD		:= $(shell pwd)
KERNEL_24	:= $(if $(wildcard $(KDIR)/Rules.make),1,0)

# Target file
obj-m		:= s626.o


# Source files
ifeq	($(KERNEL_24),0) # > 2.4
s626-objs	:= s626drv.o 
else #  2.4
ifeq	($(KERNELRELEASE),)
all:
		$(MAKE) -C $(KDIR) M=$(PWD) SUBDIRS=$(PWD)
clean modules_install:
		$(MAKE) -C $(KDIR) M=$(PWD) SUBDIRS=$(PWD) $@
endif	# KERNELRELEASE

else 	#  2.4


###############################################################################
# for library and application level:
SRC=			# module source tree
CC=			# compiler
AR=			# library manager

# source path
ifeq ($(strip $(SRC)),)
	SRC=.
endif

# the compiler
ifeq ($(strip $(CC)),)
	CC=gcc
endif

# the library manager
ifeq ($(strip $(AR)),)
	AR=ar
endif

# build the distribution's library
lib:		libs626.a
libs626.a:	s626core.o s626mod.o
		$(AR) cr libs626.a $(SRC)/s626core.o $(SRC)/s626mod.o

# compile the 626 universal core
core:		s626core.o
s626core.o:	$(SRC)/s626core.c $(SRC)/s626core.h $(SRC)/s626mod.h
		$(CC) $(CFLAGS) -c $(SRC)/s626core.c

# build the 626 OS-dependent module
mod:		s626mod.o
s626mod.o:	$(SRC)/s626mod.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626.h $(SRC)/s626api.h
		$(CC) $(CFLAGS) -c $(SRC)/s626mod.c

# build the distribution's library (you may need to install gcc-multilib package)
lib32:		libs626-32.a
libs626-32.a:	s626core-32.o s626mod-32.o
		$(AR) cr libs626-32.a $(SRC)/s626core-32.o $(SRC)/s626mod-32.o

# compile the 626 universal core
s626core-32.o:	$(SRC)/s626core.c $(SRC)/s626core.h $(SRC)/s626mod.h
		$(CC) $(CFLAGS) -m32 -c $(SRC)/s626core.c -o $@

# build the 626 OS-dependent module
s626mod-32.o:	$(SRC)/s626mod.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626.h $(SRC)/s626api.h
		$(CC) $(CFLAGS) -m32 -c $(SRC)/s626mod.c -o $@

#----------------------------------------------------------------
# Demonstration programs
# type "make demo" to compile, link, and create demo application
demo:		libs626.a s626demo.o s626dm2b.o
		$(CC) -o s626demo s626demo.o -L$(SRC) -ls626 -lpthread
		$(CC) -o s626dm2b s626dm2b.o -L$(SRC) -ls626 -lpthread

s626demo.o:	$(SRC)/s626demo.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626api.h $(SRC)/App626.h
		$(CC) $(CFLAGS) -c $(SRC)/s626demo.c

s626dm2b.o:	$(SRC)/s626dm2b.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626api.h $(SRC)/App626.h
		$(CC) $(CFLAGS) -c $(SRC)/s626dm2b.c

demo32:		libs626-32.a s626demo-32.o s626dm2b-32.o
		$(CC) -m32 -o s626demo-32 s626demo-32.o -L$(SRC) -ls626-32 -lpthread
		$(CC) -m32 -o s626dm2b-32 s626dm2b-32.o -L$(SRC) -ls626-32 -lpthread

s626demo-32.o:	$(SRC)/s626demo.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626api.h $(SRC)/App626.h
		$(CC) $(CFLAGS) -m32 -c $(SRC)/s626demo.c -o $@

s626dm2b-32.o:	$(SRC)/s626dm2b.c $(SRC)/s626core.h $(SRC)/s626mod.h $(SRC)/s626drv.h $(SRC)/s626api.h $(SRC)/App626.h
		$(CC) $(CFLAGS) -m32 -c $(SRC)/s626dm2b.c -o $@


# for debugging:
#     gcc -g -o s626demo s626core.c s626mod.c s626demo.c -lpthread
#     gcc -g -o s626dm2b s626core.c s626mod.c s626dm2b.c -lpthread

clnall:
		rm -f *.ko *.o .*.cmd .*.o.flags *.mod.c libs626*.a s626demo s626dm2b *.tar.gz s626*-32 Module.symvers modules.order


###############################################################################
# for internal develoment only
#----------------------------------------------------------------
# select files for the distribution tarball
T =  $(SRC)/README
T += $(SRC)/COPYING
T += $(SRC)/MAKEDEV
T += $(SRC)/Modules.conf
T += $(SRC)/Makefile
T += $(SRC)/s626drv.h
T += $(SRC)/s626drv.c
T += $(SRC)/s626.h
T += $(SRC)/s626mod.h
T += $(SRC)/s626mod.c
T += $(SRC)/s626core.h
T += $(SRC)/s626core.c
T += $(SRC)/s626api.h
T += $(SRC)/App626.h
T += $(SRC)/libs626.a
T += $(SRC)/s626demo.c
T += $(SRC)/s626dm2b.c

#----------------------------------------------------------------
# build distribution tarball (only for development)
tar:
#		tar -Pzcf s626-0.3.tar.gz $(T)
		tar -czvf s626-1.0.tar.gz $(T)

MAKE="'make' KDIR=/lib/modules/${kernelver}/build"
CLEAN="'make' clean"
BUILT_MODULE_NAME=s626
BUILT_MODULE_LOCATION=./
DEST_MODULE_LOCATION=/kernel/drivers/sensoray/
PACKAGE_NAME=s626
PACKAGE_VERSION=1.0.5
AUTOINSTALL=yes
REMAKE_INITRD=yes

8814au.ko.xz:

Uninstallation
Deleting from: /lib/modules/6.6.9-amd64/updates/dkms/
Original module
No original module was found for this module on this kernel.
Use the dkms install command to reinstall any previous module version. depmod...... dkms: running auto installation service for kernel 6.6.9-amd64.
88XXau.ko.xz:

Running module version sanity check.

Module version v5.6.4.2_35491.20191025 for 88XXau.ko.xz exactly matches what is already found in kernel 6.6.9-amd64.

DKMS will not replace this module.

You may override by specifying --force.

Error! Installation aborted.

Sign command: /lib/modules/6.6.9-amd64/build/scripts/sign-file

Signing key: /var/lib/dkms/mok.key

Public certificate (MOK): /var/lib/dkms/mok.pub

Building module:

Cleaning build area...

/usr/src/realtek-rtl8814au-5.8.5.1~git20231211.866a910/dkms-make.sh..........................................................................................

Signing module /var/lib/dkms/realtek-rtl8814au/5.8.5.1~git20231211.866a910/build/8814au.ko

Cleaning build area...

8814au.ko.xz: Running module version sanity check.

Original module
No original module exists within this kernel
Installation
Installing to /lib/modules/6.6.9-amd64/updates/dkms/ depmod......
88XXau.ko.xz:

Running module version sanity check.

Module version v5.6.4.2_35491.20191025 for 88XXau.ko.xz

exactly matches what is already found in kernel 6.6.9-amd64.

DKMS will not replace this module.

You may override by specifying --force.

Error! Installation aborted.

dkms autoinstall on 6.6.9-amd64/x86_64 succeeded for realtek-rtl8814au

dkms autoinstall on 6.6.9-amd64/x86_64 failed for 8812au(6) realtek- rtl88xxau(6)

Error! One or more modules failed to install during autoinstall.

Refer to previous errors for more information.

dkms: autoinstall for kernel: 6.6.9-amd64 failed!

run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 11

Failed to process /etc/kernel/header_postinst.d at /var/lib/dpkg/info/linux-headers-6.6.9-amd64.postinst line 11.

dpkg: error processing package linux-headers-6.6.9-amd64 (--configure):

installed linux-headers-6.6.9-amd64 package post-installation script subprocess returned error exit status 11

Setting up libtss2-sys1:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-swtpm0:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-libtpms0:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-device0:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-spi-helper0:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-cmd0:amd64 (4.0.1-7) ...

Setting up libtss2-tcti-mssim0:amd64 (4.0.1-7) ...

Setting up libtss2-esys-3.0.2-0:amd64 (4.0.1-7) ...

Setting up libopenconnect5:amd64 (9.12-1+b1) ...

Processing triggers for libc-bin (2.37-12) ... Errors were encountered while processing:

linux-headers-6.6.9-amd64 E: Sub-process /usr/bin/dpkg returned an error code (1)

8812au/5.6.4.2_35491.20191025, 6.6.9-amd64, x86_64: built

realtek-rtl8814au/5.8.5.1~git20231211.866a910, 6.6.9-amd64, x86_64: installed
realtek-rtl88xxau/5.6.4.2~git20231117.a3e0c0b, 6.6.9-amd64, x86_64: built

dkms: running auto installation service for kernel 6.1.0-18-amd64.

dpkg: error processing package linux-headers-amd64 (--configure):
 dependency problems - leaving unconfigured
Processing triggers for man-db (2.11.2-2) ...
Errors were encountered while processing:
 linux-image-6.1.0-18-amd64
 linux-headers-6.1.0-18-amd64
 linux-image-amd64
 linux-headers-amd64

$ apt-mark showhold
linux-headers-amd64
linux-image-amd64