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<body><span class="vcard"><a class="email" href="mailto:johannes.krampf@gmail.com" title="Johannes Krampf <johannes.krampf@gmail.com>"> <span class="fn">Johannes Krampf</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108773">bug 108773</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Attachment #142523 is obsolete</td>
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<td>1
</td>
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<td style="text-align:right;">Attachment #142648 is obsolete</td>
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<td>1
</td>
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<td style="text-align:right;">Attachment #142659 is obsolete</td>
<td>
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<td>1
</td>
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<td style="text-align:right;">Attachment #144307 is obsolete</td>
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<td>1
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108773#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108773">bug 108773</a>
from <span class="vcard"><a class="email" href="mailto:johannes.krampf@gmail.com" title="Johannes Krampf <johannes.krampf@gmail.com>"> <span class="fn">Johannes Krampf</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=144329" name="attach_144329" title="Dmesg of drm-tip with fastboot on T440s">attachment 144329</a> <a href="attachment.cgi?id=144329&action=edit" title="Dmesg of drm-tip with fastboot on T440s">[details]</a></span>
Dmesg of drm-tip with fastboot on T440s
This is drm-tip version 307cedb7b907ee533bf9e746d0e06bea04f2722b from Thu May
23 12:49:55 2019 +1000. I used drm.debug=0xe on the kernel flags as requested.
Previously I had 0x1e.
The behaviour changed slightly with drm-tip:
On startup, I still get the sub-second flash with boot messages and then the
screen _including the backlight_ turns off. I can interact with the system
(wayland+VT), but get no screen output.
Please tell me if there's any other information I can provide (video of boot
process?) and I'll try to provide it.</pre>
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