On Fri, May 05, 2023 at 02:29:14AM +0500, evgeny nikiforov wrote:
Hello I have a laptop with Intel Wi-Fi 6 AX201. After updating from 6.2 to 6.3, I'm experiencing wifi crashes, wifi restart when traffic is flowing with Pixel 7 Pro (wifi 6E/802.11ax). Other older wifi devices probably not affected (tried Xiaomi pad with wifi 5/802.11ac). Tested with iperf3 in both directions, rsyncing Pixel photos to laptop, via router (wifi 5) or via Pixel wifi hotspot. The whole system freezes for seconds, no cursor movements possible at these moments (libinput "Touch jump detected and discarded" in logs indicating this). No problem with the 6.2 kernel.
Bisecting leads to this commit of bumping FW API to 74 9ad1e7e5b0c488e4518edd698238a87ac6a73caa, looking strange to me, but reverting from 74 to 72 in 6.3 indeed successful with no crash.
Thanks for the report. However, it is better to also attach your .config so that people here can know which config options are enabled (and your hardware setup).
Interestingly, when I see the culprit commit, it looks trivial to me: it just bumps maximum firmware API version, so theoretically drivers using lower API version should continue to work. Maybe you got one of your bisection steps wrong.
Anyway, I'm adding this to regzbot:
#regzbot ^introduced: 9ad1e7e5b0c488 #regzbot title: AX201 crash on traffic activity due to firmware API bump
Thanks.