I got a new SP4/i7/256/16 on Wednesday before Thanksgiving, the first day they were avilable. It worked well at first, but after installing some updates, the Intel Iris 540 driver crashes constantly, sometimes within 30 seconds of login, but always within a few minutes. The only way I've managed to stabilize it is on a fresh boot, go straight into Device Manager and change the display driver to "Microsoft Basic Display Driver". That driver is stable, but seems to be all software rendering, so frame rate on video is poor, for example.
I've installed the latest available Intel driver (version 4326) but as soon as I use that driver, the crashes continue, so I reverted back to the generic driver. (Unfortunately the generic one doesn't support brightness adjustments; the little brightness meter in the top left of the screen goes up and down accordingly but the light never changes, which is killing my eyes and battery life. This works great under the Intel driver.)
I know many others have seen the display driver crashes when the SP4 goes to sleep, but mine crashes regularly. None of the other fixes I've read have helped me. I think maybe I'm having a different experience than others because it's a new chipset (Iris 540), but unfortunately this is still very, very broken. Any advice is appreciated....
Thanks,
Mick_NYC