Solved, and it turns out this was self-inflicted — apologies for the noise. The
cause was a leftover file from my own early troubleshooting:
/etc/modprobe.d/iwlwifi.conf containing "options iwlwifi enable_ini=0". With
that file present,
the firmware crashes on load (ADVANCED_SYSASSERT 0x2010210B, RT ucode -110)
on every kernel I tried: 6.17, 7.0, and 6.8.0-135. Removing the file and
reloading iwlwifi fixed it immediately — wifi now works on 7.0.0-27 with the
current
firmware.
That's also why my live USB tests kept working and made this look like
a kernel regression: live sessions never read the installed system's
modprobe.d.
Maybe worth keeping this open in some form though: enable_ini=0 taking down
firmware init entirely (rather than just disabling debug data collection) seems
like a driver bug in its own right, and is trivially reproducible here if anyone
from the iwlwifi side is interested.
** Changed in: linux-hwe-6.17 (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2148754
Title:
Intel AX211 (Raptor Lake CNVi) fails to initialize, error -110
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