Date:	Tue, 22 Sep 2015 09:15:58 -0700
From:	Matt Roper <matthew.d.roper@...el.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Dave Jones <davej@...emonkey.org.uk>,
	Dave Airlie <airlied@...ux.ie>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	"Lankhorst, Maarten" <maarten.lankhorst@...el.com>,
	Jairo Miramontes <jairo.daniel.miramontes.caton@...el.com>
Subject: Re: [regression] [git pull] drm for 4.3

On Tue, Sep 22, 2015 at 05:13:55PM +0200, Daniel Vetter wrote:
> On Tue, Sep 22, 2015 at 08:00:17AM -0700, Jesse Barnes wrote:
> > Cc'ing Maarten and Matt; I'm guessing this may be related to one of
> > their recent patches.

Sounds like this showed up before my recent work, but I think I might
have seen similar problems while working on atomic watermarks; the
issues I was seeing were because the initial hardware readout could
leave primary->visible set to true even when the CRTC was off.  My
series (which is still under development) contains this patch to fix
that:

        http://patchwork.freedesktop.org/patch/59564/

Does applying that help with the problems reported here?


Matt

> 
> Adding Jairo to track this regression.
> -Daniel
> 
> >
> > Jesse
> >
> > On 09/21/2015 11:48 AM, Dave Jones wrote:
> > > On Mon, Sep 07, 2015 at 02:45:59PM -0400, Dave Jones wrote:
> > >  > On Fri, Sep 04, 2015 at 11:40:53PM +0100, Dave Airlie wrote:
> > >  >  >
> > >  >  > Hi Linus,
> > >  >  >
> > >  >  > This is the main pull request for the drm for 4.3. Nouveau is probably the biggest
> > >  >  > amount of changes in here, since it missed 4.2. Highlights below, along with the usual
> > >  >  > bunch of fixes. There are a few minor conflicts with your tree but nothing
> > >  >  > you can't handle. All stuff outside drm should have applicable acks.
> > >  >  >
> > >  >  > Highlights:
> > >  >  >
> > >  >  > ...
> > >  >  > i915:
> > >  >  > Skylake support enabled by default
> > >  >  > legacy modesetting using atomic infrastructure
> > >  >  > Skylake fixes
> > >  >  > GEN9 workarounds
> > >  >
> > >  > Since this merge, I'm seeing this twice during boot..
> > >
> > > And still there in -rc2.  Several other people reported this too,
> > > and they also got no reponse.
> > >
> > > I'll start bisecting when I get home tonight. It shouldn't be too hard,
> > > as 4.2 was fine.
> > >
> > > Dave
> > >
> > >  > ------------[ cut here ]------------
> > >  > WARNING: CPU: 0 PID: 6 at drivers/gpu/drm/i915/intel_display.c:1377 assert_planes_disabled+0xdf/0x140()
> > >  > plane A assertion failure, should be disabled but not
> > >  > CPU: 0 PID: 6 Comm: kworker/u8:0 Not tainted 4.2.0-think+ #9
> > >  > Workqueue: events_unbound async_run_entry_fn
> > >  >  0000000000000561 ffff88050392b6f8 ffffffff8d7dccce ffff88050392b740
> > >  >  ffff88050392b730 ffffffff8d079ee2 ffff880500a60000 0000000000000000
> > >  >  0000000000000000 0000000000000000 ffff8805008e99c8 ffff88050392b790
> > >  > Call Trace:
> > >  >  [<ffffffff8d7dccce>] dump_stack+0x4e/0x79
> > >  >  [<ffffffff8d079ee2>] warn_slowpath_common+0x82/0xc0
> > >  >  [<ffffffff8d079f6c>] warn_slowpath_fmt+0x4c/0x50
> > >  >  [<ffffffff8d4ee6ff>] assert_planes_disabled+0xdf/0x140
> > >  >  [<ffffffff8d4f7b5b>] intel_disable_pipe+0x4b/0x2c0
> > >  >  [<ffffffff8d4f7e5a>] haswell_crtc_disable+0x8a/0x2e0
> > >  >  [<ffffffff8d500e7f>] intel_atomic_commit+0xff/0x1320
> > >  >  [<ffffffff8d4885be>] ? drm_atomic_check_only+0x21e/0x550
> > >  >  [<ffffffff8d488927>] drm_atomic_commit+0x37/0x60
> > >  >  [<ffffffff8d463c95>] drm_atomic_helper_set_config+0x1c5/0x430
> > >  >  [<ffffffff8d477c95>] drm_mode_set_config_internal+0x65/0x110
> > >  >  [<ffffffff8d4666fe>] restore_fbdev_mode+0xbe/0xe0
> > >  >  [<ffffffff8d468565>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70
> > >  >  [<ffffffff8d4685dd>] drm_fb_helper_set_par+0x2d/0x50
> > >  >  [<ffffffff8d517a1a>] intel_fbdev_set_par+0x1a/0x60
> > >  >  [<ffffffff8d3aeb45>] fbcon_init+0x545/0x5d0
> > >  >  [<ffffffff8d42d68a>] visual_init+0xca/0x130
> > >  >  [<ffffffff8d42f495>] do_bind_con_driver+0x1c5/0x3b0
> > >  >  [<ffffffff8d42f9b9>] do_take_over_console+0x149/0x1a0
> > >  >  [<ffffffff8d3aa9e7>] do_fbcon_takeover+0x57/0xb0
> > >  >  [<ffffffff8d3af5ec>] fbcon_event_notify+0x66c/0x760
> > >  >  [<ffffffff8d09e06e>] notifier_call_chain+0x3e/0xb0
> > >  >  [<ffffffff8d09e26d>] __blocking_notifier_call_chain+0x4d/0x70
> > >  >  [<ffffffff8d09e2a6>] blocking_notifier_call_chain+0x16/0x20
> > >  >  [<ffffffff8d3b4d8b>] fb_notifier_call_chain+0x1b/0x20
> > >  >  [<ffffffff8d3b7097>] register_framebuffer+0x1e7/0x300
> > >  >  [<ffffffff8d468852>] drm_fb_helper_initial_config+0x252/0x3e0
> > >  >  [<ffffffff8d5184cb>] intel_fbdev_initial_config+0x1b/0x20
> > >  >  [<ffffffff8d0a02fa>] async_run_entry_fn+0x4a/0x140
> > >  >  [<ffffffff8d09645d>] process_one_work+0x1fd/0x670
> > >  >  [<ffffffff8d0963cc>] ? process_one_work+0x16c/0x670
> > >  >  [<ffffffff8d09691e>] worker_thread+0x4e/0x450
> > >  >  [<ffffffff8d0968d0>] ? process_one_work+0x670/0x670
> > >  >  [<ffffffff8d09ccc1>] kthread+0x101/0x120
> > >  >  [<ffffffff8d09cbc0>] ? kthread_create_on_node+0x250/0x250
> > >  >  [<ffffffff8d7e764f>] ret_from_fork+0x3f/0x70
> > >  >  [<ffffffff8d09cbc0>] ? kthread_create_on_node+0x250/0x250
> > >  > ---[ end trace 54cab2e0c772d5d9 ]---
> > >  >
> > >  >
> > >  > 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3 Processor Integrated Graphics Controller (rev 06)
> > >
> > > _______________________________________________
> > > Intel-gfx mailing list
> > > Intel-gfx@...ts.freedesktop.org
> > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
> > >
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@...ts.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch

-- 
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
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