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Mat Pa
Asked: 2019-09-09 12:48:02 +0800 CST

WiFi randomly (or under load) disconnects on Ubuntu 18.04 with Qualcomm Atheros QCA6174

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With reference to this topic:

  1. I have changed WiFi powersave to off.
  2. IPv6 support disabled.
  3. I have reinstalled Linux firmware.

But nothing helped. The network still disconnects at random times

[EDIT]: OR under internet load! I have to close pages that download a lot of data, e.g. youtube. Then turn the wifi card on and off and internet comes back. If it does not close the charging websites or downloading, the connection will return for a second and then fall again. Even the Ubuntu update cannot be downloaded because the wifi disconnects

, reconnects after 4-5 minutes. I can't work like this.

No problem on Windows 10.
My card is:

06: 00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32).

EDIT: Here is my wireless-info.txt: http://pastebin.ubuntu.com/p/7VkM8bwKW2/plain/

Please suggest a solution.

networking wireless network-manager 18.04 disconnect

2 Answers

  1. I had the same issue, I solved it, at least it seems it works so far, by applying this workaround based on this solution.

    Here the workaround:

    1. Replace the folder /lib/firmware/ath10k/QCA6174/hw3.0 with the corresponding from https://github.com/kvalo/ath10k-firmware/tree/master/QCA6174/hw3.0

    2. Rename firmware-4.bin_WLAN.RM.2.0-00180-QCARMSWPZ-1 to firmware-6.bin

    3. Restart Ubuntu

    Hope it helps.

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  2. I am affected by this problem as well.

    I have a Qualcomm Atheros QCA6174 wireless card. Every time I download a big file the wireless connection is lost. It doesn't matter whether the download is done in the browser or with snap. Only a restart resolves the problem. The problem happens in Fedora 33 and Kubuntu 20.10.

    There is already a bug report at Launchpad: Wifi drops, particularly under load

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