The A15 BIOS is causing problems for my Latitude E5550.
The problems start when I put the E5550 to sleep, then disconnect from the Dell docking station.
Frequently when I wake the E5550, the wi-fi is disabled. I then do a shutdown to power it off, then turn it back on, often having to repeat that before the wi-fi is working again. Also, during the power cycles, sometimes the BIOS reports there are no hard drives to boot from. I have to power cycle again, then all is well. This only started happening with the A15 BIOS.
The power management setting in the driver for the Intel Wireless AC 7265 is ticked on to 'allow the computer to turn off this device to save power'. I'm going to untick that option to see if it has any effect, but I can't help feel that the BIOS has changed the behaviour, and I assume my laptop my now use up more power when it's sleeping.