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+++ This bug was initially created as a clone of Bug #2035833 +++
I would like to request two patches to be backported to the current kernel.
There was a iwlwifi issue that would cause firmware resets and cause
performance to significantly degrade to around ~500Kb/s till the
interface was brought down and then up again. Upstream identified the
issue and there are 2 patches that fix the issue by increasing the
scan timeout[1] and in cases where the firmware resets allows it to
recover quicker[2]. The patch to allow for quicker firmware recovery
is present in Linus' tree and present in the 5.16 rc releases while
the patch to prevent the firmware from crashing in the instance is in
net-next for 5.17.
I believe this impacts any Intel WiFi 6 cards, but it particularly
affects the AX210 on the Framework laptop.
[1] - https://bugzilla.kernel.org/show_bug.cgi?id=214549
[2] - https://bugzilla.kernel.org/show_bug.cgi?id=214693
The two patches can be found upstream and they are attached to the upstream bugs.
Hi, thanks for reporting.
I will ensure to include the patches in the next planned wireless updated, tracking BZ 2043454. Also in the RHEL8 wireless update, tracking BZ 2043453.
Wireless update to v5.16 and later fixes has been merged. It includes the patches reported to fix this BZ. Setting state to ON_QA.
@kbenoit reproduction steps from https://bugzilla.kernel.org/show_bug.cgi?id=214693#c0:
1. Start iperf to generate network load.
2. Perform `nmcli device wifi rescan`.
3. Expect: no device restart. Actual: device restarts (see logs) and network speeds become abysmally slow or non-responsive until disconnecting and reconnecting to WiFi network.
Note that this was very likely to only happen if the driver and the card has the 6GHz band enabled, but not required to be connected to 6GHz channel.
@ngompa13 may you want and be able to test it as well? This is RHEL9 bug, I've also asked the same for RHEL8 bug.
Ran testing against RHEL-9.0.0-20220301.3 on an Intel AX211 using the steps from comment 7. Only saw a momentary dip in speed (a drop of ~100 Mbps for only 1 second) if the rescan was performed and then the speed went right back to normal. Marking as verified.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (new packages: kernel), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:3907