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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108773">108773</a>
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<th>Summary</th>
<td>i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>f.zweig@yahoo.de
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>I was following the information on
<a href="https://hansdegoede.livejournal.com/19224.html">https://hansdegoede.livejournal.com/19224.html</a> to enable flicker-free bot on
Fedora 29.
However, enabling i915.fastboot=1 results in the screen staying black during
and after boot. No login manager is shown, and I cannot switch VTs via
CTRL+ALT+F keys (as usual).
This happens on a Thinkpad S1 Yoga (Haswell platform), which incidentally I
know is one of the Haswell machines available for Intel employees.
Tested kernel versions:
Fedora kernels 4.18.18/19, 4.19.2-200 and 4.20.0-0.rc2.git2.1.
I havent tested any mainline or git build yet. I reported
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=1639437">https://bugzilla.redhat.com/show_bug.cgi?id=1639437</a>, and was referred to here.
I'll try to create a dmesg with debug information, and attach it here.</pre>
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