This device has no module-loading infrastructure, so =m configs are
silently absent at runtime. Missing SOCK_DIAG made every
InetDiagMessage.destroyLiveTcpSockets() call in system_server block
~6s on netlink timeouts (114 times in one 9-minute boot, watchdog-level
main-thread stalls, Settings ANRs, stale IP/status UI). Missing
AF_VSOCK made traced crash-loop every 5s (vsock://-1:2010
EAFNOSUPPORT), tripping updatable_crashing flag resets.
CONFIG_CFG80211_DEFAULT_PS=n: mt7921u with powersave on goes deaf
after association - EAPOL 2/4 is sent, msg 3 never heard, AP deauths
with reason 15 (4-way handshake timeout) - and idle RTT spikes to
100ms+, delaying inbound connections. Always-powered TV box, so
default powersave off is the right trade.
Hypervisor-only vsock transports (VMware/virtio) stay off.
Brendan Szymanski
22205a67e1