From: Andy Lutomirski <luto@MIT.EDU> To: Chris Wilson <chris@chris-wilson.co.uk>, Dave Airlie <airlied@redhat.com>, Linus Torvalds <torvalds@linux-foundation.org> Cc: intel-gfx@lists.freedesktop.org Subject: [PATCH] drm/i915: Revert i915.semaphore=1 default from 47ae63e0 Date: Fri, 13 May 2011 12:14:54 -0400 Message-ID: <efc5a05bb650e18fb9fb6976d0f8a999536e38f0.1305303009.git.luto@mit.edu> (raw) In-Reply-To: <BANLkTikjUQWgveWjoR=uPO5UQXkTTysxng@mail.gmail.com> My Q67 / i7-2600 box has rev09 Sandy Bridge graphics. It hangs instantly when GNOME loads and it hangs so hard the reset button doesn't work. Setting i915.semaphore=0 fixes it. Semaphores were disabled in a1656b9090f7008d2941c314f5a64724bea2ae37 in 2.6.38 and were re-enabled by commit 47ae63e0c2e5fdb582d471dc906eb29be94c732f Merge: c59a333 467cffb Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Mon Mar 7 12:32:44 2011 +0000 Merge branch 'drm-intel-fixes' into drm-intel-next Apply the trivial conflicting regression fixes, but keep GPU semaphores enabled. Conflicts: drivers/gpu/drm/i915/i915_drv.h drivers/gpu/drm/i915/i915_gem_execbuffer.c (It's worth noting that the offending change is i915_drv.c, which is not a conflict.) Signed-off-by: Andy Lutomirski <luto@mit.edu> --- This fixes a 2.6.39 regression that affects my Q67 box but not my SNB laptop. Send to Linus and airlied because 2.6.39 is apparently about to be released. drivers/gpu/drm/i915/i915_drv.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c34a8dd..32d1b3e 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -49,7 +49,7 @@ module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600); unsigned int i915_powersave = 1; module_param_named(powersave, i915_powersave, int, 0600); -unsigned int i915_semaphores = 1; +unsigned int i915_semaphores = 0; module_param_named(semaphores, i915_semaphores, int, 0600); unsigned int i915_enable_rc6 = 0; -- 1.7.5.1
next prev parent reply index Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-05-13 5:38 [2.6.39 regression] hard lock when GNOME starts Andrew Lutomirski 2011-05-13 16:07 ` Andrew Lutomirski 2011-05-13 16:14 ` Andy Lutomirski [this message] 2011-05-15 23:09 ` [PATCH] drm/i915: Revert i915.semaphore=1 default from 47ae63e0 Keith Packard 2011-05-19 19:56 ` Keith Packard 2011-05-19 20:50 ` Andrew Lutomirski 2011-05-24 17:10 ` Andrew Lutomirski 2011-05-24 17:46 ` Keith Packard 2011-05-24 20:05 ` Ivan Bulatovic 2011-06-07 7:12 ` Eric Anholt 2011-06-10 14:06 ` Andrew Lutomirski 2011-08-22 16:53 ` Jesse Barnes 2011-08-31 18:24 ` Ben Widawsky 2011-08-31 18:30 ` Andrew Lutomirski 2011-08-31 19:07 ` Keith Packard 2011-08-31 19:37 ` Andrew Lutomirski 2011-09-26 17:59 ` [PATCH] drm/i915: kicking rings considered harmful Daniel Vetter 2011-09-26 19:07 ` Andrew Lutomirski 2011-09-27 9:57 ` Daniel Vetter 2011-09-27 5:22 ` Ben Widawsky 2011-09-27 10:03 ` Daniel Vetter 2011-09-27 16:46 ` Ben Widawsky 2011-09-27 17:31 ` Chris Wilson 2011-09-27 18:03 ` Daniel Vetter 2011-09-27 19:38 ` Ben Widawsky 2011-09-27 21:54 ` Chris Wilson 2011-09-28 1:34 ` Ben Widawsky 2011-09-28 8:47 ` Chris Wilson 2011-09-28 8:53 ` Daniel Vetter 2011-10-03 20:21 ` Andrew Lutomirski 2011-10-03 21:02 ` Daniel Vetter
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