Problem: RTL8822CE driver caused kernel panic (watchdog hard LOCKUP) when
hostapd tried to use VHT 802.11ac with 80MHz channel width on channel 149.
Root cause: Driver/firmware instability with VHT capabilities on this chip.
Solution: Disable VHT, use HT40+ (802.11n) only.
- Removes ieee80211ac (VHT), ieee80211ax (802.11ax), and 80MHz channel width
- Keeps HT40+ with Short GI for reasonable performance
- Stable operation on channel 149 (5745 MHz)
This allows the 5GHz AP to start and beacon without lockup on R5C hardware.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
andreasandClaude Haiku 4.5
2b00157642