Regression: QCA9377 randomly fails to connect on wake up and power on, kernel WARNING and 4WAY_HANDSHAKE_TIMEOUT

Bug #1830907 reported by Leonardo Müller on 2019-05-29

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10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-signed-hwe (Ubuntu)
Undecided
Unassigned

Bug Description

In some situations, as waking up from suspend and sometimes on boot, the wireless network fails to connect. It attempts to connect endlessly but ultimately it fails. To make it work again, it's needed to remove the module ath10k_pci and add it again.

On dmesg, it's noticeable there is a kernel WARNING and repeated messages of failure to connect with:

deauthenticated from xx:xx:xx:xx:xx:xx (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)

The QCA9377 was working flawlessly with 4.18.0-17. Previous kernel versions failed to connect on a few specific networks which required removing the module as above. 4.18.0-20 fails to connect on many cases, has kernel WARNING and prints some additional warning messages on dmesg:

[21910.162937] ath10k_pci 0000:02:00.0: Unknown eventid: 118809
[21910.165810] ath10k_pci 0000:02:00.0: Unknown eventid: 90118

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.18.0-20-lowlatency 4.18.0-20.21~18.04.1
ProcVersionSignature: Ubuntu 4.18.0-20.21~18.04.1-lowlatency 4.18.20
Uname: Linux 4.18.0-20-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed May 29 10:50:23 2019
InstallationDate: Installed on 2017-06-13 (714 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: linux-signed-hwe
UpgradeStatus: Upgraded to bionic on 2017-10-20 (586 days ago)

Po-Hsu Lin (cypressyew) wrote :

Hello,
Can you provide the dmesg mentioned here?
Also, can you reproduce with the latest HWE kernel(4.18.0-25)?
Thanks

Changed in linux-signed-hwe (Ubuntu):
status: New → Incomplete
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