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

  • Look at the logs! sudo journalctl -b 0 -u NetworkManager. Read man journalctl. – waltinator Jun 12 at 17:31

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