Update: Applied `options iwlwifi disable_11be=1` workaround (confirmed active via /sys/module/iwlwifi/parameters/disable_11be = Y). Crash recurred anyway on [2026-09-07 07:09:53], this time while running the already-loaded stable 101 ucode itself (not during a 102/BE ucode load attempt):
iwlwifi 0000:00:14.3: TOP Fatal error detected, inta_hw=0x28. iwlwifi 0000:00:14.3: Loaded firmware version: 101.6ef20b19.0 bz-b0-fm-c0-101.ucode iwlwifi 0000:00:14.3: NMI_INTERRUPT_UMAC_FATAL iwlwifi 0000:00:14.3: ADVANCED_SYSASSERT This indicates the crash is not specific to Wi-Fi 7 (BE) mode negotiation, but a fault in the 101 ucode itself. Disabling 11be does not prevent it. Driver auto-recovery still worked correctly (~5s, full reassociation). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2166635 Title: iwlwifi BE201 firmware crash (ADVANCED_SYSASSERT/NMI_INTERRUPT_UMAC_FATAL) — missing 102.ucode, falls back to 101 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2166635/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
