Wifi Blues

[Oderus]

Hi. My Wifi has been troublesome for months... I can connect no problem for about 1-2 minutes then the internet drops out but does not disconnect. I must disconnect and reconnect manually. All other devices in my residence work perfectly, and the Wifi works just fine when i dual boot windows. Would really love some help with this as it has been very troublesome.

[vinnywright]

could you post the output of

lspci -v | grep -A 7 Network

so we can see what wifi card you have .

VINNY

[Oderus]

could you post the output of

lspci -v | grep -A 7 Network

so we can see what wifi card you have .

VINNY

Certainly and thank you for the reply. Requested information is as follows.

tweak@AmigaBuntu:~$ lspci -v | grep -A 7 Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8812AE 802.11ac PCIe Wireless Network Adapter (rev 01)
Subsystem: D-Link System Inc RTL8812AE 802.11ac PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 27
I/O ports at c800 [size=256]
Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: rtl8821ae
Kernel modules: rtl8821ae

Edit: incase you need those capabilities I ran the command sudo.

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8812AE 802.11ac PCIe Wireless Network Adapter (rev 01)
Subsystem: D-Link System Inc RTL8812AE 802.11ac PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 27
I/O ports at c800 [size=256]
Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting

[vinnywright]

Certainly and thank you for the reply. Requested information is as follows.

tweak@AmigaBuntu:~$ lspci -v | grep -A 7 Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8812AE 802.11ac PCIe Wireless Network Adapter (rev 01)
Subsystem: D-Link System Inc RTL8812AE 802.11ac PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 27
I/O ports at c800 [size=256]
Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: rtl8821ae
Kernel modules: rtl8821ae

Edit: incase you need those capabilities I ran the command sudo.

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8812AE 802.11ac PCIe Wireless Network Adapter (rev 01)
Subsystem: D-Link System Inc RTL8812AE 802.11ac PCIe Wireless Network Adapter
Flags: bus master, fast devsel, latency 0, IRQ 27
I/O ports at c800 [size=256]
Memory at fe9fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting

well I just wanted to see if it was a broadcom chip ,,,I thought it sounded like a problem I remember with them ,

but this little bit of info will help some one that may know of Realtek issues ,,,,,,

VINNY

[Oderus]

Additional info that may help

nmcli dev

DEVICE TYPE STATE CONNECTION
wlp2s0 wifi connected KTL
eth0 ethernet unavailable --
lo loopback unmanaged --

sudo lshw -class network
*-network
description: Wireless interface
product: RTL8812AE 802.11ac PCIe Wireless Network Adapter
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 01
serial: 48:ee:0c:f2:b0:3a
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8821ae driverversion=4.4.0-67-generic firmware=N/A ip=192.168.0.17 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
resources: irq:27 ioport:c800(size=256) memory:fe9fc000-fe9fffff

[Snowhog]

See https://www.kubuntuforums.net/showth...l=1#post397325

[stephen46710]

You can also try downloading the deb package from the following link if all else fails:

https://packages.debian.org/sid/all/...altek/download

See the following page for more info:

https://packages.debian.org/sid/firmware-realtek

[Oderus]

See https://www.kubuntuforums.net/showth...l=1#post397325

best i can come up with is the info tool...

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

Report from: 26 Mar 2017 12:47 EDT -0400

Booted last: 26 Mar 2017 00:00 EDT -0400

Script from: 25 Mar 2017 07:04 UTC +0000

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

Distributor ID: Ubuntu
Description: Ubuntu 16.04.2 LTS
Release: 16.04
Codename: xenial

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

Linux 4.4.0-67-generic #88-Ubuntu SMP Wed Mar 8 16:34:45 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash

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

/usr/share/xsessions/plasma

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

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8812AE 802.11ac PCIe Wireless Network Adapter [10ec:8812] (rev 01)
Subsystem: D-Link System Inc RTL8812AE 802.11ac PCIe Wireless Network Adapter [1186:3305]
Kernel driver in use: rtl8821ae

03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 03)
Subsystem: Hewlett-Packard Company RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [103c:2a92]
Kernel driver in use: r8169

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

Bus 007 Device 003: ID 1c4f:0016 SiGma Micro
Bus 007 Device 004: ID 1c4f:0003 SiGma Micro HID controller
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 002: ID 0d8c:0008 C-Media Electronics, Inc.
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 19ff:0102 Dynex 1.3MP Webcam
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 08bb:29c0 Texas Instruments PCM2900C Audio CODEC
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

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

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

0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

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

rtl8821ae 225280 0
btcoexist 53248 1 rtl8821ae
rtl_pci 28672 1 rtl8821ae
rtlwifi 77824 2 rtl_pci,rtl8821ae
mac80211 737280 3 rtl_pci,rtlwifi,rtl8821ae
cfg80211 565248 2 mac80211,rtlwifi
wmi 20480 0

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

auto lo
iface lo inet loopback

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

eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF1]>
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1680 errors:0 dropped:0 overruns:0 frame:0
TX packets:1680 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:167278 (167.2 KB) TX bytes:167278 (167.2 KB)

wlp2s0 Link encap:Ethernet HWaddr <MAC 'wlp2s0' [IF2]>
inet addr:192.168.0.17 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::<IP6 'wlp2s0' [IF2]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:7814 errors:0 dropped:0 overruns:0 frame:0
TX packets:8535 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5088261 (5.0 MB) TX bytes:5361351 (5.3 MB)

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

lo no wireless extensions.

eth0 no wireless extensions.

wlp2s0 IEEE 802.11abgn ESSID:"KTL"
Mode:Managed Frequency:2.462 GHz Access Point: <MAC 'KTL' [AN2]>
Bit Rate=144.4 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr=2347 B Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:31 Missed beacon:0

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

Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 600 0 0 wlp2s0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlp2s0
192.168.0.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp2s0

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

nameserver 127.0.1.1

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

Installed:

NetworkManager

Running:

root 974 1 0 12:31 ? 00:00:04 /usr/sbin/NetworkManager --no-daemon

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

GENERAL.DEVICE: wlp2s0
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceWifi
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8812AE 802.11ac PCIe Wireless Network Adapter
GENERAL.DRIVER: rtl8821ae
GENERAL.DRIVER-VERSION: 4.4.0-67-generic
GENERAL.FIRMWARE-VERSION: N/A
GENERAL.HWADDR: <MAC 'wlp2s0' [IF2]>
GENERAL.MTU: 0
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:06.0/0000:02:00.0/net/wlp2s0
GENERAL.IP-IFACE: wlp2s0
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: KTL
GENERAL.CON-UUID: fa85d068-8d7c-414c-b149-f88e39638150
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/4
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: 144 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: yes
WIFI-PROPERTIES.ADHOC: yes
WIFI-PROPERTIES.2GHZ: yes
WIFI-PROPERTIES.5GHZ: yes
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: fa85d068-8d7c-414c-b149-f88e39638150 | KTL
IP4.ADDRESS[1]: 192.168.0.17/24
IP4.GATEWAY: 192.168.0.1
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 24.226.10.193
IP4.DNS[2]: 24.226.10.194
IP4.DNS[3]: 24.226.1.94
DHCP4.OPTION[1]: requested_routers = 1
DHCP4.OPTION[2]: requested_domain_search = 1
DHCP4.OPTION[3]: requested_time_offset = 1
DHCP4.OPTION[4]: requested_domain_name = 1
DHCP4.OPTION[5]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[6]: requested_broadcast_address = 1
DHCP4.OPTION[7]: host_name = AmigaBuntu
DHCP4.OPTION[8]: requested_wpad = 1
DHCP4.OPTION[9]: requested_netbios_scope = 1
DHCP4.OPTION[10]: next_server = 192.168.0.1
DHCP4.OPTION[11]: expiry = 1490550345
DHCP4.OPTION[12]: requested_interface_mtu = 1
DHCP4.OPTION[13]: requested_subnet_mask = 1
DHCP4.OPTION[14]: dhcp_lease_time = 3600
DHCP4.OPTION[15]: dhcp_message_type = 5
DHCP4.OPTION[16]: ip_address = 192.168.0.17
DHCP4.OPTION[17]: requested_static_routes = 1
DHCP4.OPTION[18]: requested_domain_name_servers = 1
DHCP4.OPTION[19]: routers = 192.168.0.1
DHCP4.OPTION[20]: broadcast_address = 192.168.0.255
DHCP4.OPTION[21]: requested_ntp_servers = 1
DHCP4.OPTION[22]: requested_netbios_name_servers = 1
DHCP4.OPTION[23]: domain_name_servers = 24.226.10.193 24.226.10.194 24.226.1.94
DHCP4.OPTION[24]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[25]: subnet_mask = 255.255.255.0
DHCP4.OPTION[26]: network_number = 192.168.0.0
DHCP4.OPTION[27]: requested_host_name = 1
DHCP4.OPTION[28]: dhcp_server_identifier = 192.168.0.1
IP6.ADDRESS[1]: fe80::<IP6 'wlp2s0' [IF2]>/64
IP6.GATEWAY:

GENERAL.DEVICE: eth0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION:
GENERAL.HWADDR: <MAC 'eth0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:0a.0/0000:03:00.0/net/eth0
GENERAL.IP-IFACE:
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: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: off
CONNECTIONS.AVAILABLE-CONNECTION-PATHS:

SSID BSSID MODE CHAN FREQ RATE SIGNAL BARS SECURITY ACTIVE *
KTL5G <MAC 'KTL5G' [AN1]> Infra 153 5765 MHz 54 Mbit/s 100 ▂▄▆█ WPA2 no
KTL <MAC 'KTL' [AN2]> Infra 11 2462 MHz 54 Mbit/s 76 ▂▄▆_ WPA2 yes *
dlink-C21E-5GHz <MAC 'dlink-C21E-5GHz' [AN3]> Infra 36 5180 MHz 54 Mbit/s 62 ▂▄▆_ WPA1 WPA2 no
NETGEAR55-5G <MAC 'NETGEAR55-5G' [AN4]> Infra 36 5180 MHz 54 Mbit/s 62 ▂▄▆_ WPA2 no
The Net <MAC 'The Net' [AN5]> Infra 149 5745 MHz 54 Mbit/s 60 ▂▄▆_ WPA1 WPA2 no
dlink-6D32 <MAC 'dlink-6D32' [AN6]> Infra 1 2412 MHz 54 Mbit/s 57 ▂▄▆_ WPA1 WPA2 no
dlink-C21E <MAC 'dlink-C21E' [AN7]> Infra 1 2412 MHz 54 Mbit/s 57 ▂▄▆_ WPA1 WPA2 no
new-arris <MAC 'new-arris' [AN8]> Infra 1 2412 MHz 54 Mbit/s 54 ▂▄__ WPA1 WPA2 no
BELL830 <MAC 'BELL830' [AN9]> Infra 9 2452 MHz 54 Mbit/s 54 ▂▄__ WEP no
AttackIP <MAC 'AttackIP' [AN10]> Infra 1 2412 MHz 54 Mbit/s 50 ▂▄__ WPA1 WPA2 no
BELL639 <MAC 'BELL639' [AN11]> Infra 6 2437 MHz 54 Mbit/s 50 ▂▄__ WPA2 no
NETGEAR55 <MAC 'NETGEAR55' [AN12]> Infra 6 2437 MHz 54 Mbit/s 47 ▂▄__ WPA2 no
C2E31666FCDB <MAC 'C2E31666FCDB' [AN13]> Infra 11 2462 MHz 54 Mbit/s 47 ▂▄__ WPA2 no
HP-Print-65-Deskjet 3510 series <MAC 'HP-Print-65-Deskjet 3510 series' [AN14]> Infra 1 2412 MHz 54 Mbit/s 44 ▂▄__ WPA2 no
TP-LINK_3032 <MAC 'TP-LINK_3032' [AN15]> Infra 10 2457 MHz 54 Mbit/s 44 ▂▄__ WPA2 no
LAURIE-PC_Network <MAC 'LAURIE-PC_Network' [AN16]> Infra 11 2462 MHz 54 Mbit/s 44 ▂▄__ WPA1 WPA2 no
SETUP <MAC 'SETUP' [AN17]> Ad-Hoc 11 2462 MHz 11 Mbit/s 44 ▂▄__ -- no
Williams 58 <MAC 'Williams 58' [AN18]> Infra 11 2462 MHz 54 Mbit/s 40 ▂▄__ WPA2 no
dlink-E8D5 <MAC 'dlink-E8D5' [AN19]> Infra 2 2417 MHz 54 Mbit/s 37 ▂▄__ WPA1 WPA2 no
BIG SEXY <MAC 'BIG SEXY' [AN20]> Infra 4 2427 MHz 54 Mbit/s 37 ▂▄__ WPA1 no
C2720A50FB49 <MAC 'C2720A50FB49' [AN21]> Infra 6 2437 MHz 54 Mbit/s 37 ▂▄__ WPA2 no
Canfone493 <MAC 'Canfone493' [AN22]> Infra 11 2462 MHz 54 Mbit/s 37 ▂▄__ WPA1 WPA2 no
C830A7F8E62C <MAC 'C830A7F8E62C' [AN23]> Infra 11 2462 MHz 54 Mbit/s 37 ▂▄__ WPA2 no
Gooding <MAC 'Gooding' [AN24]> Infra 11 2462 MHz 54 Mbit/s 37 ▂▄__ WPA2 no
Joebe <MAC 'Joebe' [AN25]> Infra 11 2462 MHz 54 Mbit/s 34 ▂▄__ WPA2 no
Jeanny PC Network <MAC 'Jeanny PC Network' [AN26]> Infra 11 2462 MHz 54 Mbit/s 34 ▂▄__ WPA1 WPA2 no
BELL330 <MAC 'BELL330' [AN27]> Infra 11 2462 MHz 54 Mbit/s 34 ▂▄__ WPA1 WPA2 no
smokey <MAC 'smokey' [AN28]> Infra 11 2462 MHz 54 Mbit/s 34 ▂▄__ WPA2 no
Linksys00844 <MAC 'Linksys00844' [AN29]> Infra 11 2462 MHz 54 Mbit/s 34 ▂▄__ WPA2 no
Carole Wifi <MAC 'Carole Wifi' [AN30]> Infra 1 2412 MHz 54 Mbit/s 30 ▂___ WPA1 WPA2 no
Lorene <MAC 'Lorene' [AN31]> Infra 11 2462 MHz 54 Mbit/s 30 ▂___ WPA2 no
ss <MAC 'ss' [AN32]> Infra 1 2412 MHz 54 Mbit/s 27 ▂___ WPA1 WPA2 no
LYNN-HP_Network <MAC 'LYNN-HP_Network' [AN33]> Infra 11 2462 MHz 54 Mbit/s 27 ▂___ WPA2 no
The Place to be <MAC 'The Place to be' [AN34]> Infra 11 2462 MHz 54 Mbit/s 27 ▂___ WPA2 no

##### NetworkManager.state ##############

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=false
WimaxEnabled=false

##### NetworkManager.conf ###############

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false

##### NetworkManager profiles ###########

[[/etc/NetworkManager/system-connections/KTL]] (600 root)
[connection] id=KTL | type=wifi | permissions=user:tweak:;
[wifi] mac-address=<MAC 'wlp2s0' [IF2]> | mac-address-blacklist= | ssid=KTL
[ipv4] method=auto
[ipv6] method=auto

##### iw reg get ########################

Region: America/Toronto (based on set time zone)

country CA: DFS-FCC
(2402 - 2472 @ 40), (N/A, 30), (N/A)
(5170 - 5250 @ 80), (N/A, 17), (N/A)
(5250 - 5330 @ 80), (N/A, 24), (0 ms), DFS
(5490 - 5600 @ 80), (N/A, 24), (0 ms), DFS
(5650 - 5730 @ 80), (N/A, 24), (0 ms), DFS
(5735 - 5835 @ 80), (N/A, 30), (N/A)

##### iwlist channels ###################

lo no frequency information.

eth0 no frequency information.

wlp2s0 32 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 GHz
Channel 48 : 5.24 GHz
Channel 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Channel 100 : 5.5 GHz
Channel 104 : 5.52 GHz
Channel 108 : 5.54 GHz
Channel 112 : 5.56 GHz
Channel 116 : 5.58 GHz
Channel 132 : 5.66 GHz
Channel 136 : 5.68 GHz
Channel 140 : 5.7 GHz
Channel 149 : 5.745 GHz
Channel 153 : 5.765 GHz
Channel 157 : 5.785 GHz
Channel 161 : 5.805 GHz
Channel 165 : 5.825 GHz
Current Frequency:2.462 GHz (Channel 11)

##### iwlist scan #######################

lo Interface doesn't support scanning.

wlp2s0 Interface doesn't support scanning : Device or resource busy

eth0 Interface doesn't support scanning.

##### module infos ######################

[rtl8821ae]
filename: /lib/modules/4.4.0-67-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/rtl8821ae.ko
firmware: rtlwifi/rtl8821aefw.bin
description: Realtek 8821ae 802.11ac PCI wireless
license: GPL
author: Realtek WlanFAE <wlanfae@realtek.com>
srcversion: B9E24DCC76240A48AEEF94E
depends: rtlwifi,rtl_pci,btcoexist,mac80211
intree: Y
vermagic: 4.4.0-67-generic SMP mod_unload modversions
parm: swenc:Set to 1 for software crypto (default 0)
(bool)
parm: ips:Set to 0 to not use link power save (default 1)
(bool)
parm: swlps:Set to 1 to use SW control power save (default 0)
(bool)
parm: fwlps:Set to 1 to use FW control power save (default 1)
(bool)
parm: msi:Set to 1 to use MSI interrupts mode (default 1)
(bool)
parm: debug:Set debug level (0-5) (default 0) (int)
parm: disable_watchdog:Set to 1 to disable the watchdog (default 0)
(bool)
parm: int_clear:Set to 0 to disable interrupt clear before set (default 1)
(bool)

[rtl_pci]
filename: /lib/modules/4.4.0-67-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtl_pci.ko
description: PCI basic driver for rtlwifi
license: GPL
author: Larry Finger <Larry.FInger@lwfinger.net>
author: Realtek WlanFAE <wlanfae@realtek.com>
author: lizhaoming <chaoming_li@realsil.com.cn>
srcversion: A8D4C0A6A0654A520F36829
depends: mac80211,rtlwifi
intree: Y
vermagic: 4.4.0-67-generic SMP mod_unload modversions

[rtlwifi]
filename: /lib/modules/4.4.0-67-generic/kernel/drivers/net/wireless/realtek/rtlwifi/rtlwifi.ko
description: Realtek 802.11n PCI wireless core
license: GPL
author: Larry Finger <Larry.FInger@lwfinger.net>
author: Realtek WlanFAE <wlanfae@realtek.com>
author: lizhaoming <chaoming_li@realsil.com.cn>
srcversion: 8DE5162D95CD0C7CC18C5A8
depends: mac80211,cfg80211
intree: Y
vermagic: 4.4.0-67-generic SMP mod_unload modversions

[mac80211]
filename: /lib/modules/4.4.0-67-generic/kernel/net/mac80211/mac80211.ko
license: GPL
description: IEEE 802.11 subsystem
srcversion: 95AEC776A5F508489477F0E
depends: cfg80211
intree: Y
vermagic: 4.4.0-67-generic SMP mod_unload modversions
parm: minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
parm: max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm: max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm: beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm: probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm: ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)

[cfg80211]
filename: /lib/modules/4.4.0-67-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: A7DC879B6551813C20004F1
depends:
intree: Y
vermagic: 4.4.0-67-generic SMP mod_unload modversions
parm: bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)

##### module parameters #################

[rtl8821ae]
debug: 0
disable_watchdog: N
fwlps: Y
int_clear: Y
ips: Y
msi: Y
swenc: N
swlps: N

[mac80211]
beacon_loss_count: 7
ieee80211_default_rc_algo: minstrel_ht
max_nullfunc_tries: 2
max_probe_tries: 5
minstrel_vht_only: Y
probe_wait_ms: 500

[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00

##### /etc/modules ######################

##### modprobe options ##################

[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off

[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211

[/etc/modprobe.d/iwlwifi-opt.conf]
options iwlwifi 11n_disable=1

[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en

[/etc/modprobe.d/osspd.conf]
blacklist snd-pcm-oss
blacklist snd-mixer-oss
blacklist snd-seq-oss

##### rc.local ##########################

exit 0

##### pm-utils ##########################

[/etc/pm/config.d/config] (644 root)
SUSPEND_MODULES="rtl8821ae wlp2s0"

grep: /etc/pm/config.d/.config.swp: Permission denied

##### udev rules ########################

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC 'eth0' [IF1]>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

##### dmesg #############################

[ 597.947749] wlp2s0: deauthenticating from <MAC 'KTL' [AN2]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 625.111841] wlp2s0: authenticate with <MAC 'KTL' [AN2]>
[ 629.907323] wlp2s0: send auth to <MAC 'KTL' [AN2]> (try 1/3)
[ 629.909237] wlp2s0: authenticated
[ 629.922577] wlp2s0: associate with <MAC 'KTL' [AN2]> (try 1/3)
[ 629.926422] wlp2s0: RX AssocResp from <MAC 'KTL' [AN2]> (capab=0x431 status=0 aid=3)
[ 629.932877] wlp2s0: associated
[ 729.234410] wlp2s0: deauthenticating from <MAC 'KTL' [AN2]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 760.994176] wlp2s0: authenticate with <MAC 'KTL' [AN2]>
[ 760.997202] wlp2s0: send auth to <MAC 'KTL' [AN2]> (try 1/3)
[ 761.002470] wlp2s0: authenticated
[ 761.006152] wlp2s0: associate with <MAC 'KTL' [AN2]> (try 1/3)
[ 761.021700] wlp2s0: RX AssocResp from <MAC 'KTL' [AN2]> (capab=0x431 status=0 aid=3)
[ 761.028516] wlp2s0: associated
[ 871.811077] wlp2s0: deauthenticating from <MAC 'KTL' [AN2]> by local choice (Reason: 3=DEAUTH_LEAVING)
[ 891.531680] wlp2s0: authenticate with <MAC 'KTL' [AN2]>
[ 891.532274] wlp2s0: send auth to <MAC 'KTL' [AN2]> (try 1/3)
[ 891.537700] wlp2s0: authenticated
[ 891.538399] wlp2s0: associate with <MAC 'KTL' [AN2]> (try 1/3)
[ 891.544657] wlp2s0: RX AssocResp from <MAC 'KTL' [AN2]> (capab=0x431 status=0 aid=3)
[ 891.551257] wlp2s0: associated

########## wireless info END ############

[oshunluvr]

Try this ins a terminal and rebooting:

sudo iw reg set IN
sudo sed -i 's/^REG.*=$/&IN/' /etc/default/crda

[Oderus]

You can also try downloading the deb package from the following link if all else fails:

https://packages.debian.org/sid/all/...altek/download

See the following page for more info:

https://packages.debian.org/sid/firmware-realtek

tried installing this and thank you for the comment. Unfortunately no luck! :)