Look here
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1394368
In comments #6 and 7 there are firmware files. Download them and place where it is said. Then it should work.
Look here
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-firmware/ +bug/1394368
In comments #6 and 7 there are firmware files. Download them and place where it is said.
Then it should work.