Comment # 10 on bug 1019337 from Adrien Plazas

(In reply to Takashi Iwai from comment #8)
> There might be some problem in the module load order.  Some drivers might be
> needed before i915 driver.  For checking this, try to boot with "nomodeset"
> option.  Then login on Linux console, and run like:
>   # rmmod i915
>   # modprobe i915 modeset=1
> 
> This will reload i915 with KMS again.

When doing this from the console I couldn't access the graphical session
anymore, and from the graphical session it rotated it correctly then froze it.