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IDProjectCategoryView StatusLast Update
0015938CentOS-7kernelpublic2019-04-30 20:58
Reporterm-tag 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
Product Version7.6.1810 
Target VersionFixed in Version 
Summary0015938: problems with wifi
DescriptionSince update to CentOS 7.6 I'm having issues with the wifi on my laptop with a Qualcomm Atheros QCA6174 wlan adapter.
The wifi doesn't start automatically anymore and cannot be controlled with the gnome-control-center.

In gnome-control-center there is the message: "No Wi-Fi Adapter Found". Switching the ON/OFF switch to ON, it will go back immedeatly to OFF, but
the wlan will start anyway. There is no way to select another network or to put it into flight modus.

Via commandline it can be started with 'nmcli r wifi on' too.
But 'nmcli r wifi' always shows: WIFI disabled.

(To stop it, I do: 'rmmod ath10k_pci')

With older kernels (for example 3.10.0-862.11.6) and leaving everything unchanged, wifi and gnome-control-center works fine.
Steps To ReproduceBoot with kernel 3.10.0-957.10.1.el7.x86_64
TagsNo tags attached.
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centosntric

centosntric

2019-04-01 12:31

reporter   ~0034143

I am having the "exact" same problem with the Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01) .
izhscorp

izhscorp

2019-04-02 06:28

reporter   ~0034147

I have a similar problem with Realtek wifi adapter.
m-tag

m-tag

2019-04-30 20:58

reporter   ~0034409

In my case the problems seem to be related to my specific model of laptop acer aspire v3-372.

It is not possible to "rfkill unblock" the acer-wireless, because wmidev_evaluate_method() always returns with error
AE_BAD_PARAMETER.

This can be changed if one patches wmi.c (linux-3.10.0-957.10.1.el7.x86_64):

---------------------
266c266
< if (block->instance_count <= instance)
---
> if (block->instance_count < instance)

---------------------

Another workaround is 'rmmod acer-wmi' or to blacklist acer-wmi.
Then everything works for me as in CentOS 7.5.

However, I didn't succeed to make the rfkill-switch (Fn+F3) work. But this didn't work in previous versions either.

Issue History

Date Modified Username Field Change
2019-03-20 20:17 m-tag New Issue
2019-04-01 12:31 centosntric Note Added: 0034143
2019-04-02 06:28 izhscorp Note Added: 0034147
2019-04-30 20:58 m-tag Note Added: 0034409