From: Lucas Stach <l.stach@pengutronix.de>
To: Guido Riedel <guido.riedel@web.de>, linux-pm@vger.kernel.org
Cc: "Rafael J. Wysocki" <rafael@kernel.org>, dri-devel@lists.freedesktop.org
Subject: Re: baseline power consumtion kernel > 5.3.10
Date: Thu, 05 Dec 2019 11:37:10 +0100 [thread overview]
Message-ID: <475aa5cfd3d3ccac5b2c76ba031bf925db09a917.camel@pengutronix.de> (raw)
In-Reply-To: <3ebca53c-b8fa-1e7f-6d4e-abdc93cbf2a6@web.de>
On Do, 2019-12-05 at 08:52 +0100, Guido Riedel wrote:
> Hi,
>
> Since Kernel 5.3.11 I got a significant increased baseline Power
> consumption. I tried up to 5.4.1 on arch linux. Powertop shows an
> increase from 3.6W on 5.3.10 to 5.x W on higher Kernels. My laptop fan
> spins a lot more.
>
> I read that a lot of Intel stuff has entered the Kernel in 5.3.11, could
> this cause it? Will it stay like this in the next Versions? Can I maybe
> switch something off etc. to get a lower baseline power?
>
> I hope I write to the right address, otherwise sorry.
7e34f4e4aad3 ("drm/i915/gen8+: Add RC6 CTX corruption WA"), which has
been backported to 5.3.11 causes a major power regression due to Intel
GPUs not being able to enter rc6 anymore.
Fixes for this are -next, but I don't know what the plans for landing
and maybe backporting are.
Regards,
Lucas
prev parent reply other threads:[~2019-12-05 10:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-05 7:52 baseline power consumtion kernel > 5.3.10 Guido Riedel
2019-12-05 8:20 ` Rafael J. Wysocki
2019-12-05 10:37 ` Lucas Stach [this message]
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