On Wed, 2017-06-28 at 05:20 -0400, David Airlie wrote:
> I ran into this today:
>
https://gist.github.com/Brainiarc7/aa43570f512906e882ad6cdd835efe57
>
> DRM firmware is loaded by default. HuC and GuC are not. Things work
> without them, and things work with them loaded. So what's the
> pro/con
> and if there's a pro, why isn't it the kernel default? Seems like
> if
> it should be default, either upstream should set them as the
> default,
> or the CPU/GPU should ask for it?
I expect when upstream decided they are stable and useful enough,
upstream
will enable them. I'm not fully sure how useful they are, I think
they
might possibly enable lower power states, but also nasty bugs.
And Ironlakes [1] ?
Can I get any better performance, if I try enable RC6 p-states ? by
this link [2] is for 4th-gen ...
Dell release an update for BIOS [3]
Best regards,
[1]
Xorg.0.log
[ 1122.762] (II) intel(0): SNA initialized with Ironlake (gen5)
backend
dmesg | grep drm
[ 22.588888] [drm] RC6 disabled, disabling runtime PM support
[2]
https://superuser.com/a/783944/176412
[3]
Dell Latitude E6410 System BIOS
This package provides the BIOS update for Dell Latitude E6410/6410ATG
and is supported on Latitude E6410/6410ATG models (...)
Fixes:
- Updated Intel ME Firmware to address security advisory CVE-2017-5689
/ INTEL-SA-00075.
--
Sérgio M. B.