From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= Subject: RC6 for an Intel GU doesn't always work Date: Wed, 10 Oct 2012 18:33:49 +0200 Message-ID: <5075A36D.2000301@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-kernel-owner@vger.kernel.org To: intel-gfx@lists.freedesktop.org Cc: Linux Kernel , dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org Sometimes - after a reboot or after wakeup from s2disk I'm observed at my ThinkPad T420 (i5-2540M CPU) w/ integrated intel graphic (i915 module) since 3.6-rc(5?), that the temperature is above 80=C2=B0C (usua= lly it is around/lower than 50 =C2=B0C). Powertop-2.1 shows, that the all 4 CP= U cores are mostly idle, but the GPU is running at 100%. It looks for me that the power saving mode RC6 isn't active. After 1-2 s2ram's however the issue went away. I'm observing the issue both under my Gentoo Linux and under a RH syste= m (kernel 3.6.1 each). It is hard to bisect b/c not reliable. --=20 MfG/Sincerely Toralf F=C3=B6rster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3