QCA6174 slow transfer speeds

Bug #1828304 reported by Kristian Robertsen on 2019-05-08
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-firmware (Ubuntu)

Bug Description

Ubuntu 19.04
Package version 1.178

After the upgrade the transfer speeds dropped dramatically.
Download/incoming is affected to a greater degree than upload/outgoing.

A temporary solution as downloading linux-firmware 1.175.3 from cosmic-updates, and overwriting binaries in ath10k/QCA6174/hw3.0/ with the binaries from this package.

Detailed hardware information

lshw -C network

       description: Wireless interface
       product: QCA6174 802.11ac Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:6e:00.0
       logical name: wlp110s0
       version: 32
       serial: 6c:0b:84:26:e5:e1
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=5.0.0-13-generic firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 ip= latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:142 memory:dc400000-dc5fffff
       description: Wireless interface
       product: Wil6200 802.11ad Wireless Network Adapter
       vendor: Wilocity Ltd.
       physical id: 0
       bus info: pci@0000:6f:00.0
       logical name: wlp111s0
       version: 02
       serial: 04:ce:14:07:92:26
       width: 64 bits
       clock: 33MHz
       capabilities: bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wil6210 driverversion=5.0.0-13-generic firmware= latency=0 multicast=yes wireless=IEEE 802.11
       resources: irq:138 memory:dc200000-dc3fffff

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