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Tags: 16.04   networking   dual-boot   atheros   xps  
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Title: Very Slow upload speed | Ubuntu 16.04 | Dual-boot | Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e]
ID: /2018/04/16/Very-Slow-upload-speed-_-Ubuntu-16.04-_-Dual-boot-_-Qualcomm-Atheros-QCA6174-802.11ac-Wireless-Network-Adapter-_168c_003e_
Created: April 16, 2018    Edited:  May 4, 2019
Upload: November 24, 2022    Layout:  post
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You appear to be effected by this bug. There are 68 posts of problems and suggestions. The latest one suggests to:

May 4, 2019 update

Over a year ago, but after the original answer was posted, a bug fix came out. It happened during the kernel 4.16-rc5 release and the source code change comments state:

Achieved throughput for different values of sk_pacing_shift (average
of 5 iterations of 10-sec netperf runs to a host on the other side of
the WiFi hop):

Latency for competing flows increases from ~3 ms to ~10 ms with this
change. This is about the same magnitude of queueing latency induced
by flows that are not originated on the WiFi device itself (and so are
not limited by TSQ).

Signed-off-by: Toke HΓΈiland-JΓΈrgensen

Instinctively you think a kernel greater than 4.15 is required to get the bug fix. This is not so as the next section explains.

Kernel 4.16-rc5 through Kernel 5.0 bug fixes are in 4.14.114 LTS

I’m still on kernel LTS (Long Term Support) which has another 5 years of updates coming for it including the 4.16 patch above and recent kernel 5.0 bug fixes.

To prove the bug fix is there go to where my current kernel 4.14.114 is:

It says:

To obtain the source from which they are built fetch the commit below:

git:// v4.14.114  

ubuntu kernel commits

⇧ How to get the GPU info? Ubuntu 16.04 - Can't connect to home Wi-Fi with Killer 1535 (QCA6174)  β‡©