When I replaced Windows 11 with Kubuntu 23.10 in an ASUS X553M laptop, the installation finished with a "fatal error". I had to use yannubuntu's boot-repair to fix it, which I downloaded through a wired connection.
However, the wifi is not working. The two first codes I took from Ubuntu's Wireless Troubleshooting Guide, and the others from thread posted by LQ Newbie littlegirl on 02/18/2016.
~$ lspci -nnk | grep -i net -A2
02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Lite-On Communications Inc QCA9565 / AR9565 Wireless Network Adapter [11ad:0662]
Kernel driver in use: ath9k
Kernel modules: ath9k
--
03:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 06)
Subsystem: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:0123]
Kernel driver in use: r8169
Kernel modules: r8169
eliana@eliana-X553MA:~$ lsmod
Module Size Used by
udp_diag 12288 0
tcp_diag 12288 0
inet_diag 28672 2 tcp_diag,udp_diag
rfcomm 98304 16
snd_seq_dummy 12288 0
snd_hrtimer 12288 1
cmac 12288 3
algif_hash 12288 1
algif_skcipher 12288 1
af_alg 32768 6 algif_hash,algif_skcipher
bnep 32768 2
snd_hda_codec_hdmi 94208 1
snd_hda_codec_realtek 192512 1
snd_hda_codec_generic 122880 1 snd_hda_codec_realtek
intel_rapl_msr 20480 0
intel_rapl_common 40960 1 intel_rapl_msr
intel_soc_dts_thermal 16384 0
snd_hda_intel 61440 1
cmdlinepart 12288 0
snd_intel_dspcfg 32768 1 snd_hda_intel
snd_intel_sdw_acpi 16384 1 snd_intel_dspcfg
spi_nor 135168 0
snd_hda_codec 212992 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
intel_soc_dts_iosf 20480 1 intel_soc_dts_thermal
intel_powerclamp 24576 0
mtd 106496 3 spi_nor,cmdlinepart
snd_hda_core 147456 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 20480 1 snd_hda_codec
coretemp 24576 0
snd_pcm 196608 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
at24 24576 0
mei_hdcp 28672 0
mei_pxp 16384 0
ath9k 253952 0
kvm_intel 487424 0
spi_intel_platform 12288 0
spi_intel 32768 1 spi_intel_platform
snd_seq_midi 24576 0
snd_seq_midi_event 16384 1 snd_seq_midi
ath9k_common 49152 1 ath9k
snd_rawmidi 57344 1 snd_seq_midi
kvm 1404928 1 kvm_intel
ath9k_hw 671744 2 ath9k_common,ath9k
uvcvideo 135168 0
videobuf2_vmalloc 20480 1 uvcvideo
ath 36864 3 ath9k_common,ath9k,ath9k_hw
uvc 12288 1 uvcvideo
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 40960 1 uvcvideo
videodev 360448 2 videobuf2_v4l2,uvcvideo
irqbypass 12288 1 kvm
punit_atom_debug 12288 0
snd_seq 118784 9 snd_seq_midi,snd_seq_midi_event,snd_seq_dummy
mfd_aaeon 12288 0
asus_nb_wmi 28672 0
mac80211 1724416 1 ath9k
asus_wmi 73728 2 asus_nb_wmi,mfd_aaeon
ledtrig_audio 12288 2 snd_hda_codec_generic,asus_wmi
intel_cstate 20480 0
videobuf2_common 86016 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
i2c_i801 36864 0
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
sparse_keymap 12288 1 asus_wmi
platform_profile 12288 1 asus_wmi
mc 86016 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
i2c_smbus 16384 1 i2c_i801
ath3k 20480 0
cfg80211 1318912 4 ath9k_common,ath9k,ath,mac80211
snd_timer 49152 3 snd_seq,snd_hrtimer,snd_pcm
hci_uart 180224 0
btusb 73728 0
btqca 24576 1 hci_uart
lpc_ich 32768 0
snd 143360 15 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_code c,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
libarc4 12288 1 mac80211
mei_txe 36864 2
btrtl 32768 2 hci_uart,btusb
btmtk 12288 1 btusb
btbcm 24576 2 hci_uart,btusb
soundcore 16384 1 snd
mei 167936 5 mei_hdcp,mei_pxp,mei_txe
btintel 53248 2 hci_uart,btusb
bluetooth 1077248 47 btrtl,btmtk,btqca,btintel,hci_uart,btbcm,bnep,ath3k,btusb,rfcomm
binfmt_misc 24576 1
ecdh_generic 16384 2 bluetooth
ecc 45056 1 ecdh_generic
asus_wireless 16384 0
rfkill_gpio 12288 0
nls_iso8859_1 12288 1
joydev 32768 0
input_leds 12288 0
mac_hid 12288 0
serio_raw 20480 0
msr 12288 0
parport_pc 53248 0
ppdev 24576 0
lp 28672 0
parport 77824 3 parport_pc,lp,ppdev
efi_pstore 12288 0
dmi_sysfs 20480 0
ip_tables 36864 0
x_tables 69632 1 ip_tables
autofs4 57344 2
hid_generic 12288 0
usbhid 77824 0
i915 4145152 49
drm_buddy 20480 1 i915
i2c_algo_bit 16384 1 i915
ttm 110592 1 i915
drm_display_helper 241664 1 i915
crct10dif_pclmul 12288 1
rtsx_pci_sdmmc 36864 0
crc32_pclmul 12288 0
cec 94208 2 drm_display_helper,i915
rc_core 77824 1 cec
polyval_generic 12288 0
ghash_clmulni_intel 16384 0
cryptd 24576 1 ghash_clmulni_intel
sha256_ssse3 32768 0
drm_kms_helper 270336 2 drm_display_helper,i915
r8169 114688 0
sha1_ssse3 32768 0
realtek 36864 1
rtsx_pci 131072 1 rtsx_pci_sdmmc
ahci 49152 2
psmouse 212992 0
drm 761856 26 drm_kms_helper,drm_display_helper,drm_buddy,i915,ttm
libahci 57344 1 ahci
xhci_pci 24576 0
xhci_pci_renesas 20480 1 xhci_pci
video 73728 2 asus_wmi,i915
wmi 40960 3 video,asus_wmi,mfd_aaeon
i2c_hid_acpi 12288 0
i2c_hid 40960 1 i2c_hid_acpi
dw_dmac 12288 0
hid 180224 3 i2c_hid,usbhid,hid_generic
dw_dmac_core 36864 1 dw_dmac
eliana@eliana-X553MA:~$ iwconfig
lo no wireless extensions.

enp3s0f2 no wireless extensions.

wlp2s0 IEEE 802.11 ESSIDff/any
Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
Retry short limit:7 RTS thrff Fragment thrff
Power Managementff

eliana@eliana-X553MA:~$ rfkill list
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
13: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
eliana@eliana-X553MA:~$ wget -N -t 5 -T 10 https://github.com/UbuntuForums/wire.../wireless-info && \
chmod +x wireless-info && \
./wireless-info
--2024-03-12 15:18:33-- https://github.com/UbuntuForums/wire.../wireless-info
Resolving github.com (github.com)... 20.201.28.151
Connecting to github.com (github.com)|20.201.28.151|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://raw.githubusercontent.com/Ub.../wireless-info [following]
--2024-03-12 15:18:33-- https://raw.githubusercontent.com/Ub.../wireless-info
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.108.133, 185.199.111.133, 185.199.109.133, ...
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.108.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 17534 (17K) [text/plain]
Saving to: ‘wireless-info’

wireless-info 100%[====================================================================================>] 17,12K --.-KB/s in 0,004s

Last-modified header missing -- time-stamps turned off.
2024-03-12 15:18:34 (4,32 MB/s) - ‘wireless-info’ saved [17534/17534]

[sudo] password for eliana:

Results saved in "/home/eliana/wireless-info.txt".

Results also archived in "/home/eliana/wireless-info.tar.gz", as they exceed the 19.5 kB size limit for ".txt" attachments on the Ubuntu Forums.

eliana@eliana-X553MA:~$ b4
Command 'b4' not found, but can be installed with:
sudo apt install b4
eliana@eliana-X553MA:~$ cd backports-20151120
bash: cd: backports-20151120: No such file or directory

########## wireless info START ##########

Report from: 12 Mar 2024 15:18 -03 -0300

Booted last: 12 Mar 2024 00:00 -03 -0300

Script from: 25 Jan 2020 03:34 UTC +0000

##### release ###########################

Distributor ID: Ubuntu
Description: Ubuntu 23.10
Release: 23.10
Codename: mantic

##### kernel ############################

Linux 6.5.0-25-generic #25-Ubuntu SMP PREEMPT_DYNAMIC Wed Feb 7 14:58:39 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

Plasma (X11)

##### lspci #############################

02:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01)
Subsystem: Lite-On Communications Inc QCA9565 / AR9565 Wireless Network Adapter [11ad:0662]
Kernel driver in use: ath9k

03:00.2 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 06)
Subsystem: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:0123]
Kernel driver in use: r8169

##### lsusb #############################

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 029: ID 04ca:3010 Lite-On Technology Corp.
Bus 001 Device 003: ID 04f2:b483 Chicony Electronics Co., Ltd USB2.0 VGA UVC WebCam
Bus 001 Device 002: ID 1ea7:0066 SHARKOON Technologies GmbH [Mediatrack Edge Mini Keyboard]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
13: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

##### secure boot #######################

This system doesn't support Secure Boot

##### lsmod #############################

ath9k 253952 0
ath9k_common 49152 1 ath9k
ath9k_hw 671744 2 ath9k_common,ath9k
ath 36864 3 ath9k_common,ath9k,ath9k_hw
asus_nb_wmi 28672 0
mac80211 1724416 1 ath9k
asus_wmi 73728 2 asus_nb_wmi,mfd_aaeon
ledtrig_audio 12288 2 snd_hda_codec_generic,asus_wmi
sparse_keymap 12288 1 asus_wmi
platform_profile 12288 1 asus_wmi
ath3k 20480 0
cfg80211 1318912 4 ath9k_common,ath9k,ath,mac80211
libarc4 12288 1 mac80211
bluetooth 1077248 47 btrtl,btmtk,btqca,btintel,hci_uart,btbcm,bnep,ath3k,btusb,rfcomm
video 73728 2 asus_wmi,i915
wmi 40960 3 video,asus_wmi,mfd_aaeon

##### interfaces ########################

##### ifconfig ##########################

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback <MAC address> brd <MAC address>
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s0f2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether <MAC 'enp3s0f2' [IF1]> brd <MAC address>
inet 192.168.1.4/24 brd 192.168.1.255 scope global dynamic noprefixroute enp3s0f2
valid_lft 5437sec preferred_lft 5437sec
inet6 fe80::7a14:d3d3:8dac:fea5/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp2s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether <MAC 'wlp2s0' [IF2]> brd <MAC address>

##### iwconfig ##########################

lo no wireless extensions.

enp3s0f2 no wireless extensions.

wlp2s0 IEEE 802.11 ESSIDff/any
Mode:Managed Access Point: Not-Associated Tx-Power=15 dBm
Retry short limit:7 RTS thrff Fragment thrff
Power Managementff


##### route #############################

default via 192.168.1.254 dev enp3s0f2 proto dhcp src 192.168.1.4 metric 100
169.254.0.0/16 dev enp3s0f2 scope link metric 1000
192.168.1.0/24 dev enp3s0f2 proto kernel scope link src 192.168.1.4 metric 100

##### resolv.conf #######################

[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']

nameserver 127.0.0.53
options edns0 trust-ad
search .

##### network managers ##################

Installed:

NetworkManager

Running:

root 630 1 0 Mar09 ? 00:00:17 /usr/sbin/NetworkManager --no-daemon

##### NetworkManager info ###############

GENERAL.DEVICE: enp3s0f2
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/Devices/2
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL810xE PCI Express Fast Ethernet controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 6.5.0-25-generic
GENERAL.FIRMWARE-VERSION: --
GENERAL.HWADDR: <MAC 'enp3s0f2' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.IP4-CONNECTIVITY: 4 (full)
GENERAL.IP6-CONNECTIVITY: 4 (full)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.3/0000:03:00.2/net/enp3s0f2
GENERAL.PATH: pci-0000:03:00.2
GENERAL.IP-IFACE: enp3s0f2
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: b82df9d1-a470-3d84-9a61-71510e3913db
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/5
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 100 Mb/s
CAPABILITIES.IS-SOFTWARE: no
CAPABILITIES.SRIOV: no
INTERFACE-FLAGS.UP: yes
INTERFACE-FLAGS.LOWER-UP: yes
INTERFACE-FLAGS.CARRIER: yes
INTERFACE-FLAGS.PROMISC: no
WIRED-PROPERTIES.CARRIER: on
IP4.ADDRESS[1]: 192.168.1.4/24
IP4.GATEWAY: 192.168.1.254
IP4.ROUTE[1]: dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 100
IP4.ROUTE[2]: dst = 0.0.

First google hit on your laptop:
https://forums.linuxmint.com/viewtopic.php?t=329416

Secure boot was already disabled.

Secure Boot was already disabled. No WiFi connection, but it does connect to telephone hotspot.

Try booting from a live usb and see if the issue persists.
https://www.devuan.org/os/documentat...owulf/live-gui