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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.

Mat Pa
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  • What kernel version is reported by uname -r I'm using same WiFi card with no problems on Ubuntu 16.04. – WinEunuuchs2Unix Sep 08 '19 at 20:59
  • Related: https://askubuntu.com/questions/905363/ubuntu-16-04-cant-connect-to-home-wi-fi-with-killer-1535-qca6174/1025371#1025371 – WinEunuuchs2Unix Sep 08 '19 at 21:01
  • Not directly related but may be helpful: https://askubuntu.com/questions/1025642/very-slow-upload-speed-ubuntu-16-04-dual-boot-qualcomm-atheros-qca6174-802/1025654#1025654 – WinEunuuchs2Unix Sep 08 '19 at 21:02
  • A collection of bug reports on your WiFi card that my be a valuable resource: https://askubuntu.com/questions/1011764/unstable-wifi-connection-on-ubuntu-16-04/1011792#1011792 – WinEunuuchs2Unix Sep 08 '19 at 21:04
  • Have you confirmed that powersave is actually off? Eg. have you ran the command ip devname get power_save and confirmed it respond with Power save: off – Kristopher Ives Sep 08 '19 at 21:48
  • @WinEunuuchs2Unix kernel version mateusz @ mateusz-Aspire-VN7-592G: ~ $ uname -r 5.0.0-27-generic – Mat Pa Sep 09 '19 at 07:11
  • @KristopherIves ip link 3: wlp6s0: <BROADCAST, MULTICAST, UP, LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000 link / ether b8: 86: 87: fd: 5e: bf brd ff: ff: ff: ff: ff: ff mateusz @ mateusz-Aspire-VN7-592G: ~ $ iw dev wlp6s0 get power_save Power save: off – Mat Pa Sep 09 '19 at 07:12
  • My: iw dev wlp60s0 get power_save returns Power save: on. – WinEunuuchs2Unix Sep 09 '19 at 10:41
  • @WinEunuuchs2Unix Do you suggest to return to 'on' settings and then the problem will be solved? – Mat Pa Sep 09 '19 at 10:49
  • The difference is I'm using Long Term Support kernel: 4.14.140 For installation see: How to update kernel to the latest mainline version without any Distro-upgrade? – WinEunuuchs2Unix Sep 09 '19 at 10:49
  • My powersave settings are setup here: https://askubuntu.com/questions/905363/ubuntu-16-04-cant-connect-to-home-wi-fi-with-killer-1535-qca6174/1025371#1025371 – WinEunuuchs2Unix Sep 09 '19 at 10:52
  • I think I have this same problem, I have to turn on and off the wifi settings in software to fix. I didn't realize it was related to load till i stumbled on this question but that may make sense $ lspci | egrep Ath 6f:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32). I am using Ubuntu 23.04 beta now but have had problem for a long time (Dell Precision 7540) – Colin D Feb 20 '23 at 05:53

2 Answers2

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.

davidbaumann
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Enrico Giurin
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  • This doesn't fix the issue for me – thedoctar Dec 13 '19 at 23:04
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    I'm a bit concerned by the fact that the files to download are over 5 years old, but there are newer files (2 months old) in a large sub-directory. What are all the newer 4.4.1 firmware files for? – Michael May 31 '20 at 19:54
0

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

Harold L. Brown
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    Linux is unrepeatable (every installation - a different effect), unpredictable and random... Now I'm using the 20.04 release. Although there are still no officially drivers for the mentioned network card. Currently I have wifi connection with no problems. The problem is totally gone. Why was there a problem and was it gone? I HAVE NO IDEA. – Mat Pa Mar 29 '21 at 08:20
  • @MatPa Curiously, I had the same problem on Windows 10. The problem occurred only in one specific wireless network. Other machines in that network did not have this problem. So I now think that the problem is more related to the Qualcomm Atheros wireless card than to Linux. – Harold L. Brown Apr 01 '21 at 13:25
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    Hmm possible. I used to have a similar problem (dell vostro 3460 computer - I don't remember what model of network card) with one specific wifi network on one particular router. So there can be a lot of reasons. – Mat Pa Apr 03 '21 at 11:04