After new kernel few releases ago and new hostapd, power management of wifi card stopped working.
Always stays in full power TXPOWER 20dB 100mW whatever power i set if HT Caps are set.
If i remove HT Caps, power is fixed at 14 mW, smaller range and lower speeds.
Neighborhood scan is broken. Disabling neighborhood scan cause wifi card to operate at full power. This was not the case with previous version of hostapd.
When enabling neighborhood scan, power is fixed at 14 dBm and cant be changed.
And wifi signal is dropping down at least once a day, for couple of minutes.