Comment # 12 on bug 1163771 from Chester Lin

Created attachment 831841 [details]
wlan_log.txt

(In reply to Al Cho from comment #11) 
> 
> Would you please attach the full log for this? only this part is not easy to
> find the issue.
> 
> Now I have one RPi4 and connect 5Gz(Our corp WLAN (5   GHz)) and wait for
> trying reproduce.
> 
> Please also feel free to add comments with any step what you did when you
> got this issue.

Sorry that I didn't reserve all at that time since most of them would just
normal boot logs until those unusual logs were present [as I mentioned in
comment#1]. I tried to reproduce this issue again in my home-lan (2.4G) with a
port image
[openSUSE-Tumbleweed-ARM-GNOME-raspberrypi4.aarch64-2020.02.26-Snapshot20200226.raw.xz],
and the wpa_supplicant package was still downgraded to 2.6 in order to make
WPA-PSK auth work. The test result is as attached.

Here are my configuration and steps:
-------------------
[Configuration]
- Connecting an official 5V power adapter with my rpi4-b in order to make sure
that the power source is good enough.
- Connecting the serial port with a PL2303 RS232-to-USB converter as a debug
console. (Only TXD, RXD and ground pins were connected)

[Steps]
1. Setup wlan0 via yast2.
2. Reboot and check if wlan0 is available.
3. ping to 8.8.8.8 until "ping: sendmsg: Network is unreachable" shows up.
4. check dmesg.
5. check wlan0 interface by "ip a"
-------------------

This time there was no kernel warning message but wlan was still dead after
icmp_seq=250. wlan0 was still there but it showed "link becomes ready" twice
when I was capturing this log. Is there any way to enable more debug messages
on brcmfmac?

Anyway, I will try Corp wifi (5G) afterward.