Got the same issue with latest kernel and iwlwifi firmware from sid > cat /proc/version Linux version 5.10.0-3-amd64 (debian-ker...@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1) #1 SMP Debian 5.10.12-1 (2021-01-30)
> dpkg -l firmware-iwlwifi ii firmware-iwlwifi 20201218-3 all Binary firmware for Intel Wireless cards As far as I can tell, it only happens when trying to connect to a 5GHz wifi network using 80mhz wide channel. I updated my AP configuration to use only 20 or 40mhz channels and everything works fine now. I also found an old bug [1] describing the same issue, but it's stated to be solved and has been closed. Hope this can help, Cheers, Jean Baptiste [1]: https://bugzilla.kernel.org/show_bug.cgi?id=205055
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