From owner-freebsd-x11@FreeBSD.ORG  Fri Apr 24 14:49:38 2015
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From: Henry Hu <henry.hu.sh@gmail.com>
Date: Fri, 24 Apr 2015 14:49:36 +0000
Message-ID: <CAEJt7haLeOEpPEuOkfX=S_48_xwcDaLY5f8GoJYbLdTTb=kPwA@mail.gmail.com>
Subject: Re: possible i915kms regressions (moved from questions@)
To: Joseph Mingrone <jrm@ftfl.ca>, freebsd-x11@freebsd.org
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On Fri, Apr 24, 2015 at 10:46 PM Joseph Mingrone <jrm@ftfl.ca> wrote:

> I originally described the problem of rising temperatures after
> upgrading 10-STABLE on a Lenovo X220 (Sandy Bridge) on questions@:
>
> https://lists.freebsd.org/pipermail/freebsd-questions/2015-April/265366.html
>
> Since the problem might be related to the graphics stack I've moved it
> here.  How can I confirm the source of the problem?  I don't see
> anything obvious in any logs.
>

Have you tried setting
drm.i915.enable_rc6=7
in /boot/loader.conf?

If you have it enabled, you would see
info: [drm] Enabling RC6 states: RC6 on, RC6p on, RC6pp on
in messages. It helped me reducing the GPU temperature.

>
> Joseph
>