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Date: Tue, 11 Nov 2014 09:45:50 +0000
From: Chris Vine <chris@...ne.freeserve.co.uk>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: intel drm regression with linux-3.18-rc4 kernel
Hi,
There seems to be a regression with linux-3.18-rc4 using drm with i915
graphics on one of my machines, a crappy netbook which uses a Intel
Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated
Graphics Controller (rev 03) graphics controller, when using
gnome-shell. The first time I bring up X, direct rendering seems to
fail and at a guess the system falls back to software (llvm-pipe)
rendering - in any event, it is very slow (around 4 or 5 frames/sec
instead of 60 frames/sec). If I log out and log in again drm works
fine thereafter, with normal frame rates.
This regression occurred somewhere between the 3.17 and 3.18-rc4
kernels.
Chris
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