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<body><span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Monitor does not wake from sleep with Haswell/DisplayPort"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111690">bug 111690</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>NEEDINFO
</td>
</tr>
<tr>
<td style="text-align:right;">i915 features</td>
<td>
</td>
<td>power/suspend-resume
</td>
</tr>
<tr>
<td style="text-align:right;">i915 platform</td>
<td>
</td>
<td>HSW
</td>
</tr>
<tr>
<td style="text-align:right;">Whiteboard</td>
<td>
</td>
<td>Triaged
</td>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Monitor does not wake from sleep with Haswell/DisplayPort"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111690#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Monitor does not wake from sleep with Haswell/DisplayPort"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111690">bug 111690</a>
from <span class="vcard"><a class="email" href="mailto:lakshminarayana.vudum@intel.com" title="Lakshmi <lakshminarayana.vudum@intel.com>"> <span class="fn">Lakshmi</span></a>
</span></b>
<pre>(In reply to Mark from <a href="show_bug.cgi?id=111690#c0">comment #0</a>)
<span class="quote">> Reproduction:
> 1. Start X-Windows with "startx".
> 2. Allow computer to idle until it enters sleep mode, or put computer to
> sleep with "systemctl suspend"
> 3. Monitor displays "no signal" and goes to sleep after a few seconds
> 4. Press any key to wake up the computer
> 5. Computer wakes up, but monitor remains in sleep mode
>
> My CPU is an i7-4770 and I'm using the integrated graphics.
> My monitor is an Acer B276HUL.
>
> I only observe the problem when connected with DisplayPort. DVI-D works
> fine. Those are the only two connectors available on my monitor. I have no
> other DisplayPort monitors to test.
>
> Recovery from sleep works when running Linux 3-series kernels (latest tried
> was 3.16). I have other issues with those kernels so I would like to upgrade.
> I've tried kernel versions 4.0-4.8 and 5.2 and they all exhibit this problem.
> </span >
Is is 100% reproducible?
Can you verify the issue with drmtip with kernel parameters drm.debug=0x1e
log_buf_len=4M. (<a href="https://cgit.freedesktop.org/drm-tip">https://cgit.freedesktop.org/drm-tip</a>).
If the issue persists please attach dmesg from boot.</pre>
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