ubuntu, kubuntu 18.04 Wifi slow connection, drops linux Centrino Advanced-N 6235

#ux31a Asus

upgrade linux-firmware >175

cd /tmp

wget http://mirrors.edge.kernel.org/ubuntu/pool/main/l/linux-firmware/linux-firmware_1.175.3_all.deb

dpkg -i linux-firmware_1.175.3_all.deb

reboot