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Date:      Thu, 23 Oct 2014 19:42:44 +0200
From:      =?UTF-8?B?SmVhbi1Tw6liYXN0aWVuIFDDqWRyb24=?= <jean-sebastien.pedron@dumbbell.fr>
To:        freebsd-stable@freebsd.org
Subject:   Re: Removal of legacy X.Org (aka non-WITH_NEW_XORG)
Message-ID:  <54493E14.6000500@dumbbell.fr>
In-Reply-To: <CAJ-VmomcuMsRMDRQUKrg2aVnvOwe6ijLh0q0DmExQsS63vOngg@mail.gmail.com>
References:  <E1XgBt6-0004nO-MV@dilbert.ingresso.co.uk> <54451422.1070403@FreeBSD.org> <54451E2A.1020309@FreeBSD.org> <CACuV5sBsC%2BGaYDbfiJVxyA6LTQpcr52jzGWFy4b6JYMBW7E%2Bww@mail.gmail.com> <CAJ-VmonrGbne9E%2BfwT2SWuh-N5DgS=w9UUvkoQpY6uKjTdE8GQ@mail.gmail.com> <CACuV5sABRt_4tDRTAs6EoNtyoD_-LbMO272t0hzZSOjmfyZCLA@mail.gmail.com> <CAJ-VmomcuMsRMDRQUKrg2aVnvOwe6ijLh0q0DmExQsS63vOngg@mail.gmail.com>

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[-- Attachment #1 --]
On 23.10.2014 18:31, Adrian Chadd wrote:
> Would you be willing to conduct the power test without the GPUs
> installed? There may be something missing in FreeBSD and they may not
> be clocking down when idle.

Our Radeon kernel driver doesn't support power management. This feature
was first added to Linux 3.11 (we're at 3.8) and was considered stable 3
or 4 releases later.

This means that, currently, the card's clock and voltage are the factory
boot-time defaults. For most cards, they are low and the card has poor
performance, compared to Windows/Linux. For a few exceptions, the card
is running at its maximum, leading to high temperatures and fans
spinning fast.

-- 
Jean-Sébastien Pédron


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