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From: Thomas Richter <richter@rus.uni-stuttgart.de>
To: "Daniel Vetter" <daniel@ffwll.ch>,
	"Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: intel-gfx <intel-gfx@lists.freedesktop.org>
Subject: Breaking suspend/resume by the Pipe A quirk
Date: Thu, 29 May 2014 23:19:47 +0200	[thread overview]
Message-ID: <5387A473.5020102@rus.uni-stuttgart.de> (raw)
In-Reply-To: <23914_1400259040_537641E0_23914_9298_1_20140516165034.GT8790@phenom.ffwll.local>

Hi Daniel, hi folks,

according to my knowledge, the pipe A quirk is unconditionally enabled 
on the 830 to allow resume to work properly. Unfortunately, it does 
quite the opposite on the S6010, it breaks resume completely.

If the pipe A quirk is disabled, then the boot console works correctly. 
Resume does not, the display is dead, but it is possible to remotely 
connect to the machine, from there POST the video card (via vbetool 
post), stop X, then restart X, then the display is back.

If the pipe A quirk is enabled, then try to resume from suspend, then 
the machine is dead completely. You can ping it, but not log in. I 
currently have not yet tried to figure out where it hangs, but I would 
suspect the problem is somewhere in the i915 kernel module. The display
just stays black.

Thus, in addition to the watermark fix I proposed, please *disable* the 
unconditional pipe A quirk for the 830GM since it really breaks things, 
not only the boot console.

Greetings,
	Thomas

  parent reply	other threads:[~2014-05-29 21:20 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-16 14:02 830GM still woes Thomas Richter
2014-05-16 14:41 ` Chris Wilson
2014-05-16 15:09   ` Daniel Vetter
2014-05-16 16:04     ` Ville Syrjälä
2014-05-16 16:50       ` Daniel Vetter
     [not found]       ` <23914_1400259040_537641E0_23914_9298_1_20140516165034.GT8790@phenom.ffwll.local>
2014-05-17 10:58         ` Thomas Richter
2014-05-29 14:10         ` Thomas Richter
2014-05-29 21:19         ` Thomas Richter [this message]
2014-06-02  8:27           ` Breaking suspend/resume by the Pipe A quirk Daniel Vetter
2014-06-02 10:34             ` [PATCH] Align i830 watermark to cache lines Thomas Richter
2014-06-02 10:41             ` Breaking suspend/resume by the Pipe A quirk Thomas Richter
2014-06-02 15:27               ` Daniel Vetter
2014-06-02 15:38                 ` [Patch] Disabling the pipe A quirk for the Fujitsu S6010 Thomas Richter
2014-06-02 15:56                   ` Daniel Vetter
2014-06-02 16:52                     ` Thomas Richter
2014-06-02 17:39                       ` Daniel Vetter
2014-06-02 18:44                         ` Thomas Richter
     [not found]               ` <1027_1401722832_538C97D0_1027_15897_1_20140602152702.GU19050@phenom.ffwll.local>
2014-06-03 14:38                 ` Breaking suspend/resume by the Pipe A quirk Thomas Richter
2014-06-03 14:45                   ` Daniel Vetter
2014-06-03 15:04                     ` Thomas Richter
2014-06-03 15:14                       ` Chris Wilson
2014-06-03 15:19                         ` Thomas Richter
2014-06-03 15:26                           ` Chris Wilson
2014-06-03 15:50                             ` Thomas Richter
2014-06-03 16:03                               ` Chris Wilson
     [not found]                               ` <17205_1401811442_538DF1F2_17205_16362_1_20140603160352.GA6129@nuc-i3427.alporthouse.com>
2014-06-04 22:43                                 ` Bug: Pipe A underrun on resolution switching on 830MG Thomas Richter
2014-06-08 21:20                                 ` Broken suspend/resume on i830 (with debug information) Thomas Richter

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