<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - SteamOS boots to black screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111087">bug 111087</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Summary</td>
<td>SteamOS fails to boot with "drmmode_do_crtc_dpms cannot get last vblank counter"
</td>
<td>SteamOS boots to black screen
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - SteamOS boots to black screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111087#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - SteamOS boots to black screen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111087">bug 111087</a>
from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
<pre>(In reply to Ludovico de Nittis from <a href="show_bug.cgi?id=111087#c0">comment #0</a>)
<span class="quote">> When I try to boot SteamOS I end up with just a black screen.</span >
The Xorg log file indicates that Xorg starts up in 2560x1440, then an X client
switches to 1920x1080 about 0.25s later (~23s after the kernel starts booting).
Do you notice anything on the monitor around that time, e.g. some kind of
flicker? What does the monitor say about the input signal when the black screen
is shown?
Does amdgpu.dc=0 on the kernel command line make any difference?
<span class="quote">> Xorg.0.log contains this error but I'm not completely sure if it is the
> cause:
> (EE) AMDGPU(0): drmmode_do_crtc_dpms cannot get last vblank counter</span >
It's probably not related to that.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>