Issue still exists with 6.5.0-26
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https://bugs.launchpad.net/bugs/2057484
Title:
kernel worker event freezes during traffic on iwlwifi
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Forum post with someone else with same issue:
https://askubuntu.com/questions/1507282/ubuntu-22-04-4-wifi-became-
unstable-after-some-system-update-and-maybe-install
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dmesg output showing crashes of module / call trace
[ 1384.485249] Intel(R) Wireless WiFi driver for Linux
[ 1384.493042] iwlwifi :3d:00.0: Detected crf-id 0x2001910, cnv-id
0x2001910 wfpm id 0x8000
[ 1384.49] iwlwifi :3d:00.0: PCI dev 272b/00f4, rev=0x472, rfid=0x112200
[ 1384.4
** Attachment added: "perf record with lockup going o already during whole
profile session"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.5/+bug/2057484/+attachment/5755388/+files/perf.data.gz
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** Attachment added: "perf record -a -g"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.5/+bug/2057484/+attachment/5755387/+files/perf.data.gz
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Public bug reported:
With traffic on Intel Wifi 7 BE200 card, For a while kernel enter 100%
cpu usage on a worker event thread and kworker/0:0-events_freezable is
in D state. System highly unresponsive during this time.
Happens in 6.5.0-25, does not happen in 6.5.0-17
Description:Ubuntu 22
