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<body><span class="vcard"><a class="email" href="mailto:Martin@Lichtvoll.de" title="Martin Steigerwald <Martin@Lichtvoll.de>"> <span class="fn">Martin Steigerwald</span></a>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - black screen after resume from hibernation since linux kernel 3.18"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86565">bug 86565</a>
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<th>What</th>
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<td style="text-align:right;">Attachment #111837 is obsolete</td>
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<td>1
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<td style="text-align:right;">Attachment #112050 is obsolete</td>
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<td>1
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - black screen after resume from hibernation since linux kernel 3.18"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86565#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - black screen after resume from hibernation since linux kernel 3.18"
href="https://bugs.freedesktop.org/show_bug.cgi?id=86565">bug 86565</a>
from <span class="vcard"><a class="email" href="mailto:Martin@Lichtvoll.de" title="Martin Steigerwald <Martin@Lichtvoll.de>"> <span class="fn">Martin Steigerwald</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=112375" name="attach_112375" title="debug log of a hibernation cycle with longer delay with black screen on resume">attachment 112375</a> <a href="attachment.cgi?id=112375&action=edit" title="debug log of a hibernation cycle with longer delay with black screen on resume">[details]</a></span>
debug log of a hibernation cycle with longer delay with black screen on resume
Okay, now I catched a log with:
merkaba:~> cat /proc/version /proc/cmdline
Linux version 3.19.0-rc4-tp520-trim-all-bgroups+ (martin@merkaba) (gcc version
4.9.2 (Debian 4.9.2-10) ) #17 SMP PREEMPT Mon Jan 12 10:43:23 CET 2015
BOOT_IMAGE=/vmlinuz-3.19.0-rc4-tp520-trim-all-bgroups+
root=/dev/mapper/sata-debian ro rootflags=subvol=debian
resume=/dev/mapper/sata-swap init=/bin/systemd no_console_suspend drm.debug=0xe
initcall_debug
So this is with all debugging and it is huge.
Again for the case where I get a longer delay on resuming from hibernation.
Also on hibernation itself the power LED continued to blink and the laptop
didn´t switch off after saving the image. It may be that it would eventually do
so, but I didn´t want to have it running all night as I was about to go to bed.
On resuming I saw something interesting: I had the black screen for at least a
minute, I think more two minutes, and then I saw the tty shortly displaying
about half a screen of messages before the KDE/Plasma screen locker appeared. I
don´t know what it displayed there as I was too far away from the laptop.
Jani, I will look at your suggestion next. May take a while.</pre>
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