<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 - PSR causes graphical glitches on Dell XPS 15 9570"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111701">111701</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>PSR causes graphical glitches on Dell XPS 15 9570
</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>not set
</td>
</tr>
<tr>
<th>Priority</th>
<td>not set
</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>sultan@kerneltoast.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>Created <span class=""><a href="attachment.cgi?id=145375" name="attach_145375" title="9570 EDID info">attachment 145375</a> <a href="attachment.cgi?id=145375&action=edit" title="9570 EDID info">[details]</a></span>
9570 EDID info
Since PSR was enabled in i915 somewhere around Linux 5.0, my Dell XPS 15 9570
(i7-8750H) experiences very frequent graphical glitches (FIFO underruns), even
on drm-tip. I can easily reproduce the glitches 100% of the time, since there
is always a glitch when gnome shell starts. The dp_retry_max_vs_optim branch
from <a href="https://github.com/vsyrjala/linux.git">https://github.com/vsyrjala/linux.git</a> doesn't fix the issue. However, the
glitches are completely fixed by passing i915.enable_psr=0 on the kernel
command line. I've attached my EDID info.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
<li>You are the QA Contact for the bug.</li>
</ul>
</body>
</html>