My laptop WiFi had no issue to connect at higher speeds in the past. Yesterday, I just checked while connecting to 802.11ac Access Point that laptop is not connecting higher than 72Mb/s. There is no problem with Access Point since my mobile is also connected to same AP with 433Mb/s. I suspect that in past when Ubuntu updated its kernel that resulted in breaking some WiFi features. Please suggest where I can look for to try fixing it.
lspci output
Code:
05:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3165 Plus Bluetooth (rev 99)
inxi output
Code:
System:
Host: OS Kernel: 5.15.0-73-generic x86_64 bits: 64 compiler: gcc v: 11.3.0
Desktop: MATE 1.26.0 Distro: Ubuntu 22.04.2 LTS (Jammy Jellyfish)
Machine:
Type: Laptop System: LENOVO product: 20KN0002AD v: ThinkPad E480
serial: <superuser required>
Mobo: LENOVO model: 20KN0002AD v: SDK0J40697 WIN
serial: <superuser required> UEFI-[Legacy]: LENOVO v: R0PET35W (1.12 )
date: 01/22/2018
Battery:
ID-1: BAT0 charge: 39.4 Wh (94.3%) condition: 41.8/45.3 Wh (92.3%)
volts: 12.4 min: 11.1 model: SMP 01AV446 status: Charging
CPU:
Info: quad core model: Intel Core i7-8550U bits: 64 type: MT MCP
arch: Coffee Lake rev: A cache: L1: 256 KiB L2: 1024 KiB L3: 8 MiB
Speed (MHz): avg: 800 min/max: 400/4000 cores: 1: 800 2: 800 3: 800
4: 800 5: 800 6: 800 7: 800 8: 800 bogomips: 31999
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel UHD Graphics 620 vendor: Lenovo driver: i915 v: kernel
bus-ID: 00:02.0
Device-2: AMD Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X]
vendor: Lenovo driver: amdgpu v: kernel bus-ID: 02:00.0
Device-3: Acer SunplusIT Integrated Camera type: USB driver: uvcvideo
bus-ID: 1-6:3
Display: x11 server: X.Org v: 1.21.1.4 driver: X:
loaded: amdgpu,ati,modesetting unloaded: fbdev,vesa gpu: i915
resolution: 1366x768~60Hz
OpenGL: renderer: Mesa Intel UHD Graphics 620 (KBL GT2)
v: 4.6 Mesa 22.2.5 direct render: Yes
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Lenovo driver: r8169 v: kernel port: c000 bus-ID: 03:00.0
IF: enp3s0 state: down mac: 8c:16:45:38:12:d8
Device-2: Intel Dual Band Wireless-AC 3165 Plus Bluetooth driver: iwlwifi
v: kernel bus-ID: 05:00.0
IF: wlp5s0 state: up mac: f8:63:3f:96:1b:c6
Device-3: Intel Bluetooth wireless interface type: USB driver: btusb
bus-ID: 1-5:4
IF-ID-1: docker0 state: down mac: 02:42:5e:04:4b:98
IF-ID-2: virbr0 state: down mac: 52:54:00:0c:81:28
iwconfig output
Code:
IEEE 802.11 ESSID:"C511_5G"
Mode:Managed Frequency:5.745 GHz Access Point: 04:F3:52:0E:27:04
Bit Rate=72.2 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=60/70 Signal level=-50 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:33 Missed beacon:0