How to debug/show status of intel wifi card?

How to debug/show status of intel wifi card?

[Tetsuji Rai]

Hi all,

I installed kernel-5.2-rc4 and found my intel wireless-ac 7260 card
stops working a moment (some seconds or minutes) after some browsing on
chrome or receiving emails on thunderbird or any other file transfer.  
After turning the wifi off and on again, it starts working again, a
short while.   It doesn't happen with the stable kernel 5.1.8.

I filed it bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=203851
but I still can't grasp the status of my wifi card while it's locked.  
ifconfig, iwconfig, ethtool, trace-cmd show nothing abnormal even when
the wifi card is locked.  They say my wifi card detects radio signal
correctly, transfer mode is correct.

So will you tell me how to see what happens with my wifi card?   It
should be something like a bug of the new kernel.


Thanks in advance!


-Tetsuji Rai