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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=92454">92454</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>v4.3-rc4: i915: ThinkPad Yoga 12: *ERROR* The master control interrupt lied (SDE)! [regression]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jairo.daniel.miramontes.caton@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre><span class="quote">> 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
> <<a href="mailto:oscar.mateo@intel.com">oscar.mateo@intel.com</a>>
>
> 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</span ></pre>
</div>
</p>
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