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.
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https://bugs.launchpad.net/bugs/1670041
Title:
Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
1535)
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