On Thu, Mar 17, 2022 at 02:43:14PM -0700, Mike Larkin wrote: > On Wed, Mar 16, 2022 at 11:17:47PM +0100, Stefan Sperling wrote: > > On Wed, Mar 16, 2022 at 04:11:41PM +0100, Stefan Sperling wrote: > > > This patch adds initial 11ac support to the iwm(4) driver. > > > It allows use of 80 MHz channels and VHT MCS. > > > > Updated patch. Fixes a fatal firmware error on devices which > > do not support MIMO, such as the 3160. > > > > Works great here on > > iwm0 at pci3 dev 0 function 0 "Intel AC 7265" rev 0x59, msi > iwm0: hw rev 0x210, fw ver 17.3216344376.0 > > One thing I did notice is that after ZZZ/un-ZZZ, it won't move out of 11n mode > until I ifconfig iwm0 down / up. Then it picks up the VHT rate again.
The device must have used an AP on a 2 GHz channel when it stayed in 11n mode. This is expected because 11ac only works on 5GHz channels. Our AP selection is not based on AP capabilities, only on the received signal strength. I don't want to change this right now, the changes are large enough as it is. But we could tweak this in the future such that 11ac gets preferred over 11n if possible.
