Nando, the issue you are reporting is an upstream one. Could you please
report this problem with logs from the latest mainline kernel (not
Ubuntu kernel) following the instructions at
https://wiki.ubuntu.com/Bugs/Upstream/kernel to the appropriate mailing
list (TO: Greg Kroah-Hartman, and QCA ath9k Development CC linux-serial
and linux-wireless)?
Please provide a direct URL to your post to the mailing list when it
becomes available so that it may be tracked.
Thank you for your help.
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Summary changed:
- TP-LINK TL-WN722N causes 100% CPU usage due to trace logging
+ [TP-LINK TL-WN722N v1] Plugging USB device in causes stack traces + 100% CPU
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https://bugs.launchpad.net/bugs/1775230
Title:
[TP-LINK TL-WN722N v1] Plugging USB device in causes stack traces +
100% CPU
Status in linux package in Ubuntu:
Triaged
Bug description:
Hello.
Running Ubuntu 18.04 (4.15.0-22-generic), after plugging my TP-LINK
TL-WN722N into the USB port, the CPU usage goes to 100%, and there are
multiple reports of "stack traces" in dmesg.
The attached snippet repeats multiple consecutive times in the dmesg
output (albeit with a different trace id).
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