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Groups > linux.kernel > #1243977 > unrolled thread

v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)!

Started byDarren Hart <dvhart@infradead.org>
First post2015-10-10 21:10 +0200
Last post2015-10-15 06:50 +0200
Articles 7 — 5 participants

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Contents

  v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control  interrupt lied (SDE)! Darren Hart <dvhart@infradead.org> - 2015-10-10 21:10 +0200
    Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control  interrupt lied (SDE)! [regression] Daniel Vetter <daniel@ffwll.ch> - 2015-10-12 09:10 +0200
      Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control  interrupt lied (SDE)! [regression] Jean-Christian de Rivaz <jc@eclis.ch> - 2015-10-12 19:30 +0200
      RE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control  interrupt lied (SDE)! [regression] "Miramontes Caton, Jairo Daniel"   <jairo.daniel.miramontes.caton@intel.com> - 2015-10-14 05:30 +0200
        RE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression] Jani Nikula <jani.nikula@linux.intel.com> - 2015-10-14 09:20 +0200
    Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! Jani Nikula <jani.nikula@linux.intel.com> - 2015-10-12 09:10 +0200
      Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control  interrupt lied (SDE)! Darren Hart <dvhart@infradead.org> - 2015-10-15 06:50 +0200

#1243977 — v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)!

FromDarren Hart <dvhart@infradead.org>
Date2015-10-10 21:10 +0200
Subjectv4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)!
Message-ID<qi7GO-1wO-19@gated-at.bofh.it>
The Debian 3.16.0 kernel does not emit the error, but I have not attempted a
bisection.

The warning was added by:
38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
 2014-06-18 (1 year, 4 months ago), Oscar Mateo <oscar.mateo@intel.com>

Follows: v3.15-rc8
Preceedes: 3.17-rc1

This is not present in v3.16, so perhaps not present in the Debian kernel and
this is not a regression, but just reporting the condition as intended.

Linux Version: v4.3-rc4
Platform: Lenovo ThinkPad Yoga 12
OS: Debian 8.2

$ dmesg | grep -i drm
[   10.918367] [drm] Initialized drm 1.1.0 20060810
[   11.235005] [drm] Memory usable by graphics device = 4096M
[   11.235009] fb: switching to inteldrmfb from simple
[   11.235093] [drm] Replacing VGA console driver
[   11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   11.241162] [drm] Driver supports precise vblank timestamp query.
[   11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
[   11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
[   11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
[   11.344913] fbcon: inteldrmfb (fb0) is primary device
[   12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[   12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[   12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[   13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[   13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[   13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[   22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[  278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
[ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!

-- 
Darren Hart
Intel Open Source Technology Center
--
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#1244421 — Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]

FromDaniel Vetter <daniel@ffwll.ch>
Date2015-10-12 09:10 +0200
SubjectRe: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]
Message-ID<qiFp8-8uI-5@gated-at.bofh.it>
In reply to#1243977
Another regression for Jairo to track.
-Daniel

On Sat, Oct 10, 2015 at 12:08:43PM -0700, Darren Hart wrote:
> The Debian 3.16.0 kernel does not emit the error, but I have not attempted a
> bisection.
> 
> The warning was added by:
> 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
>  2014-06-18 (1 year, 4 months ago), Oscar Mateo <oscar.mateo@intel.com>
> 
> Follows: v3.15-rc8
> Preceedes: 3.17-rc1
> 
> This is not present in v3.16, so perhaps not present in the Debian kernel and
> this is not a regression, but just reporting the condition as intended.
> 
> Linux Version: v4.3-rc4
> Platform: Lenovo ThinkPad Yoga 12
> OS: Debian 8.2
> 
> $ dmesg | grep -i drm
> [   10.918367] [drm] Initialized drm 1.1.0 20060810
> [   11.235005] [drm] Memory usable by graphics device = 4096M
> [   11.235009] fb: switching to inteldrmfb from simple
> [   11.235093] [drm] Replacing VGA console driver
> [   11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [   11.241162] [drm] Driver supports precise vblank timestamp query.
> [   11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
> [   11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
> [   11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
> [   11.344913] fbcon: inteldrmfb (fb0) is primary device
> [   12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> [   12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> 
> -- 
> Darren Hart
> Intel Open Source Technology Center

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
--
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#1244944 — Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]

FromJean-Christian de Rivaz <jc@eclis.ch>
Date2015-10-12 19:30 +0200
SubjectRe: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]
Message-ID<qiP58-5HG-17@gated-at.bofh.it>
In reply to#1244421
Le 12. 10. 15 09:06, Daniel Vetter a écrit :
> Another regression for Jairo to track.
> -Daniel

I get the exact same dmesg too with the 4.3.0-rc5 on a i5-5250U NUC 
using HDMI. The rest is a standard Debian Jessie.

> On Sat, Oct 10, 2015 at 12:08:43PM -0700, Darren Hart wrote:
>> The Debian 3.16.0 kernel does not emit the error, but I have not attempted a
>> bisection.
>>
>> The warning was added by:
>> 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
>>   2014-06-18 (1 year, 4 months ago), Oscar Mateo <oscar.mateo@intel.com>
>>
>> Follows: v3.15-rc8
>> Preceedes: 3.17-rc1
>>
>> This is not present in v3.16, so perhaps not present in the Debian kernel and
>> this is not a regression, but just reporting the condition as intended.
>>
>> Linux Version: v4.3-rc4
>> Platform: Lenovo ThinkPad Yoga 12
>> OS: Debian 8.2
>>
>> $ dmesg | grep -i drm
>> [   10.918367] [drm] Initialized drm 1.1.0 20060810
>> [   11.235005] [drm] Memory usable by graphics device = 4096M
>> [   11.235009] fb: switching to inteldrmfb from simple
>> [   11.235093] [drm] Replacing VGA console driver
>> [   11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>> [   11.241162] [drm] Driver supports precise vblank timestamp query.
>> [   11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
>> [   11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
>> [   11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
>> [   11.344913] fbcon: inteldrmfb (fb0) is primary device
>> [   12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [   12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
>> [   12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [   13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [   13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [   13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [   22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [  278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>> [ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>>
>> -- 
>> Darren Hart
>> Intel Open Source Technology Center

--
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#1246281 — RE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]

From"Miramontes Caton, Jairo Daniel" <jairo.daniel.miramontes.caton@intel.com>
Date2015-10-14 05:30 +0200
SubjectRE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]
Message-ID<qjkVk-2Hm-21@gated-at.bofh.it>
In reply to#1244421
Created bug in fdo bugzilla to keep track of this regression: https://bugs.freedesktop.org/show_bug.cgi?id=92454
Regards

-----Original Message-----
From: Daniel Vetter [mailto:daniel.vetter@ffwll.ch] On Behalf Of Daniel Vetter
Sent: Monday, October 12, 2015 2:06 AM
To: Darren Hart
Cc: Linux Kernel Mailing List; Vetter, Daniel; Daniel Vetter; Jani Nikula; David Airlie; intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; Miramontes Caton, Jairo Daniel
Subject: Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]

Another regression for Jairo to track.
-Daniel

On Sat, Oct 10, 2015 at 12:08:43PM -0700, Darren Hart wrote:
> The Debian 3.16.0 kernel does not emit the error, but I have not 
> attempted a bisection.
> 
> The warning was added by:
> 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
>  2014-06-18 (1 year, 4 months ago), Oscar Mateo 
> <oscar.mateo@intel.com>
> 
> Follows: v3.15-rc8
> Preceedes: 3.17-rc1
> 
> This is not present in v3.16, so perhaps not present in the Debian 
> kernel and this is not a regression, but just reporting the condition as intended.
> 
> Linux Version: v4.3-rc4
> Platform: Lenovo ThinkPad Yoga 12
> OS: Debian 8.2
> 
> $ dmesg | grep -i drm
> [   10.918367] [drm] Initialized drm 1.1.0 20060810
> [   11.235005] [drm] Memory usable by graphics device = 4096M
> [   11.235009] fb: switching to inteldrmfb from simple
> [   11.235093] [drm] Replacing VGA console driver
> [   11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [   11.241162] [drm] Driver supports precise vblank timestamp query.
> [   11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
> [   11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
> [   11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
> [   11.344913] fbcon: inteldrmfb (fb0) is primary device
> [   12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> [   12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> 
> --
> Darren Hart
> Intel Open Source Technology Center

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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#1246353 — RE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]

FromJani Nikula <jani.nikula@linux.intel.com>
Date2015-10-14 09:20 +0200
SubjectRE: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]
Message-ID<qjovT-88G-13@gated-at.bofh.it>
In reply to#1246281
On Wed, 14 Oct 2015, "Miramontes Caton, Jairo Daniel" <jairo.daniel.miramontes.caton@intel.com> wrote:
> Created bug in fdo bugzilla to keep track of this regression:
> https://bugs.freedesktop.org/show_bug.cgi?id=92454

Please disregard that, there's already a bug report at
https://bugs.freedesktop.org/show_bug.cgi?id=92084.

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Technology Center
--
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#1244422 — Re: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)!

FromJani Nikula <jani.nikula@linux.intel.com>
Date2015-10-12 09:10 +0200
SubjectRe: v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)!
Message-ID<qiFp8-8uI-7@gated-at.bofh.it>
In reply to#1243977
On Sat, 10 Oct 2015, Darren Hart <dvhart@infradead.org> wrote:
> The Debian 3.16.0 kernel does not emit the error, but I have not attempted a
> bisection.
>
> The warning was added by:
> 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
>  2014-06-18 (1 year, 4 months ago), Oscar Mateo <oscar.mateo@intel.com>

But we don't start hitting the warning right away with that commit, do
we? There's a bug about this with a bisected bad commit [1], please
let's track this there.

Thanks,
Jani.


[1] https://bugs.freedesktop.org/show_bug.cgi?id=92084


>
> Follows: v3.15-rc8
> Preceedes: 3.17-rc1
>
> This is not present in v3.16, so perhaps not present in the Debian kernel and
> this is not a regression, but just reporting the condition as intended.
>
> Linux Version: v4.3-rc4
> Platform: Lenovo ThinkPad Yoga 12
> OS: Debian 8.2
>
> $ dmesg | grep -i drm
> [   10.918367] [drm] Initialized drm 1.1.0 20060810
> [   11.235005] [drm] Memory usable by graphics device = 4096M
> [   11.235009] fb: switching to inteldrmfb from simple
> [   11.235093] [drm] Replacing VGA console driver
> [   11.241160] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [   11.241162] [drm] Driver supports precise vblank timestamp query.
> [   11.256249] [drm:drm_calc_timestamping_constants [drm]] *ERROR* crtc 21: Can't calculate constants, dotclock = 0!
> [   11.326946] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit banging on pin 5
> [   11.344097] [drm] Initialized i915 1.6.0 20150731 for 0000:00:02.0 on minor 0
> [   11.344913] fbcon: inteldrmfb (fb0) is primary device
> [   12.462509] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   12.466498] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> [   12.794359] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869733] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.869894] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   13.870058] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [   22.656986] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506246] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506415] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506584] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  257.506746] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722570] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722744] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [  278.722908] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776390] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776549] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 1857.776710] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
> [ 4057.592685] [drm:gen8_irq_handler [i915]] *ERROR* The master control interrupt lied (SDE)!
>
> -- 
> Darren Hart
> Intel Open Source Technology Center

-- 
Jani Nikula, Intel Open Source Technology Center
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#1247394

FromDarren Hart <dvhart@infradead.org>
Date2015-10-15 06:50 +0200
Message-ID<qjIEi-47Y-5@gated-at.bofh.it>
In reply to#1244422
On Mon, Oct 12, 2015 at 10:02:06AM +0300, Jani Nikula wrote:
> On Sat, 10 Oct 2015, Darren Hart <dvhart@infradead.org> wrote:
> > The Debian 3.16.0 kernel does not emit the error, but I have not attempted a
> > bisection.
> >
> > The warning was added by:
> > 38cc46d drm/i915/bdw: Ack interrupts before handling them (GEN8)
> >  2014-06-18 (1 year, 4 months ago), Oscar Mateo <oscar.mateo@intel.com>
> 
> But we don't start hitting the warning right away with that commit, do
> we? There's a bug about this with a bisected bad commit [1], please
> let's track this there.

I did a google search and didn't find any relevant hits for this error. So I
reported it here. I should ahve searched the bug list also. I'll do that next
time.

-- 
Darren Hart
Intel Open Source Technology Center
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