Groups > linux.debian.bugs.dist > #1048874

Bug#963025: firmware-iwlwifi: Microcode SW error detected / 9000-pu-b0-jf-b0-46.ucode

From	Jean Baptiste Favre <debian@jbfavre.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#963025: firmware-iwlwifi: Microcode SW error detected / 9000-pu-b0-jf-b0-46.ucode
Date	2021-02-19 09:20 +0100
Message-ID	<BK9b3-1LC-1@gated-at.bofh.it> (permalink)
References	<AiNk5-5EG-3@gated-at.bofh.it> <BH2St-1IN-1@gated-at.bofh.it> <AiNk5-5EG-3@gated-at.bofh.it> <BH2St-1IN-1@gated-at.bofh.it>
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Hello,
Just add another error this morning.

You can find my dmesg -T output as attachement.

Some context:
* the error occured right after laptop boot
* My Wifi setup: AP was forced to use frequency of 5240GHz and offered
20/40/80MHz channel width. Moving AP to 5180GHz solve the issue.

My understanding:
It *seems* that iwlwifi could have issues with DFS frequencies, not with
channel width.
My last report was also linked to DFS channels being used.
Moving away from DFS channel solve the issue, at least for me.

Have a nice day,
Jean Baptiste

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Bug#963025: (no subject) Jean Baptiste Favre <debian@jbfavre.org> - 2021-02-10 20:00 +0100
  Bug#963025: firmware-iwlwifi: Microcode SW error detected / 9000-pu-b0-jf-b0-46.ucode Jean Baptiste Favre <debian@jbfavre.org> - 2021-02-19 09:20 +0100

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