<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Display flickers and turns solid grey when mouse moved quickly to left edge"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93098">93098</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Display flickers and turns solid grey when mouse moved quickly to left edge
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<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>
<tr>
<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>bradgarcia@gmail.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>Hardware: Intel NUC5CPYH, output via HDMI
Display: Dell 2405FPW 1920x1200 monitor, DVI input using an HDMI-to-DVI adapter
OS: Ubuntu 15.10
arch: x86_64
kernel: 4.2.0-18-generic
Ran Intel Graphics Installer 1.2.1, but my understanding is that this doesn't
actually change the driver used, correct?
Issue:
If I flick the mouse so that the pointer quickly travels from the middle to the
left edge (in the lower portion of the display), I'll sometimes (1 in 4 tries)
get the display to "flicker". And sometimes, instead of just flickering, it
will instead turn all light grey and stay in that state.
The computer is still running - any music that was playing continues to play.
I can still ssh into the machine and run a shell. If I hit CTRL-ALT-F1, it
appears to switch virtual consoles, as the screen changes to all black - but no
text is displayed.
Workarounds:
Rebooting the computer fixes the problem.
Suspending the computer & then waking it up also fixes the problem.
dmesg:
I do not see any new dmesg being output when this flickering (or the blank
screen) occurs, but there are some suspect messages earlier in the log:
$ dmesg | grep intel
[ 1.388542] intel_idle: MWAIT substates: 0x33000020
[ 1.388547] intel_idle: v0.4 model 0x4C
[ 1.388550] intel_idle: lapic_timer_reliable_states 0xffffffff
[ 1.704352] fb: switching to inteldrmfb from EFI VGA
[ 1.827843] fbcon: inteldrmfb (fb0) is primary device
[ 1.828074] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 5.624276] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops
i915_audio_component_bind_ops [i915])
[ 6.477293] intel_rapl: Found RAPL domain package
[ 6.477299] intel_rapl: Found RAPL domain core
[ 360.262740] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe C FIFO underrun
$ dmesg | grep ERROR
[ 0.190315] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[ 2.160410] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 7.504199] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 9.687075] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 9.707438] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 9.874539] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 28.361870] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 30.589794] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 30.609787] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 31.027400] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 44.357843] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 114.932016] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 116.407431] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 120.322528] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 130.559557] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 251.352101] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 251.707114] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 252.192934] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 253.288239] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 256.803667] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 341.079074] [drm:valleyview_update_wm [i915]] *ERROR* timed out waiting for
Punit DDR DVFS request
[ 360.262740] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe C FIFO underrun</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>