Device: Dell Inspiron 15 3000 series
Ubuntu: 20.04 LTS (64-bit)
Since today in my Ubuntu Laptop, WiFi internet speed drops to minimum. And on reconnecting, connection restores normalcy but only to go down again after a few minutes.
I don't think it is a WiFi problem, because speed is consistent in other devices (Windows and Android).
Results for:
lspci -nnk | grep -iA2 net; iwconfig
00.0 Network controller [0280]: Intel Corporation Wireless 3165 [8086:3165] (rev 79)
Subsystem: Intel Corporation Wireless 3165 [8086:4410]
Kernel driver in use: iwlwifi
--
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
Subsystem: Dell RTL810xE PCI Express Fast Ethernet controller [1028:078a]
Kernel driver in use: r8169
Kernel modules: r8169
lo no wireless extensions.
enp2s0 no wireless extensions.
wlp1s0 IEEE 802.11 ESSID:"bikibittu"
Mode:Managed Frequency:2.437 GHz Access Point: 50:D4:F7:94:46:FC
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=52/70 Signal level=-58 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:4841 Invalid misc:10278 Missed beacon:0
docker0 no wireless extensions.
I tried: Even turning off power-management on wifi interface didn't work.
Didn't work