Comment 76 for bug 1670041

Is there anything a Ubuntu 18.04 user (upgraded from the preinstalled Dell XPS Ubuntu 16.04) can do without manually replacing kernels and possibly compromising laptop bootability?

This is what I'm currently running:

$ uname -a
Linux dell-desktop 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

This is what iwconfig claims:

$ iwconfig
lo no wireless extensions.

wlp2s0 IEEE 802.11 ESSID:"AndroidAPCC99"
          Mode:Managed Frequency:2.422 GHz Access Point: 66:89:F1:8F:8C:99
          Bit Rate=1 Mb/s Tx-Power=20 dBm
          Retry short limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=70/70 Signal level=-24 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:51 Missed beacon:0

In practice, I get up to 20 Mb/s UL/DL when communicating with an FTP server on my phone (both my laptop and the phone support 802.11ac). Another laptop easily reaches 50 Mb/s in the same scenario.