[Bug 86565] New: black screen after resume from hibernation since linux kernel 3.18

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86565

            Bug ID: 86565
           Summary: black screen after resume from hibernation since linux
                    kernel 3.18
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: Martin at Lichtvoll.de
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Since linux kernel 3.18-rc2 I sometimes get a black screen after resuming from
hibernation via in-kernel-suspend. With 3.17 I didn't have this issue.
Additionally, sometimes on hibernation the machine after writing the image does
not switch off, but stays on with the power LED blinking. I then usually switch
it off manually by pressing power button longer and it usually resumes just
fine after it.

Since the black screen issue is more severe this bug is about it. I only
mentioned the other issue in case it can somehow be related.

This is with a ThinkPad T520 with BIOS Version: 8AET63WW (1.43 ), Release Date:
05/08/2013. The black screen happens with 3.18-rc2 to 3.18-rc5.


The machine appears to run and I switch it off manually and reboot to get
things back to work. Since it doesn't happen all the time and since the machine
carries production data, I am very reluctant to try to bisect this one. It
would likely take a lot of time and also mean running probably unstable kernel
versions between 3.17 and 3.18-rc2.

I use the following customization for pm-utils:

merkaba:/etc/pm/config.d> grep . *                     
sleepmodule.conf:SLEEP_MODULE=kernel
unload_vbox_modules.conf:SUSPEND_MODULES="$SUSPEND_MODULES vboxdrv vboxnetflt
vboxnetadp vboxpci "

That unloading of vbox modules is new. I will test with this, due to having
read:

https://www.virtualbox.org/ticket/9260
https://www.virtualbox.org/ticket/9305

But these are already closed with VirtualBox 4.1.2 and I have 4.3.18 on this
machine. Additionally I didn't see any black screen issues with kernel 3.17.

merkaba:~> lspci -nn | grep -i vga
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller [8086:0126] (rev 09)

Is there a way to force pm-utils to switch to text console so that I can
probably see an error? If it happens over the weekend, I may try to SSH into
the box when it only shows the black screen. But I bet SSH would not work, as
it also didn't write any /var/log/kernel.log entries between hibernation and
reboot:

Nov 22 00:06:26 merkaba kernel: [30777.215518] CPU1: Package temperature/speed
normal
Nov 22 00:12:16 merkaba kernel: [31127.220536] IPv6: ADDRCONF(NETDEV_UP):
wlan0: link is not ready
Nov 22 00:12:16 merkaba kernel: [31127.228142] PM: Hibernation mode set to
'platform'
Nov 22 10:15:15 merkaba kernel: [    0.000000] Initializing cgroup subsys
cpuset
Nov 22 10:15:15 merkaba kernel: [    0.000000] Initializing cgroup subsys cpu
Nov 22 10:15:15 merkaba kernel: [    0.000000] Initializing cgroup subsys
cpuacct

Distribution is Debian Sid with:

xserver-xorg-video-intel:amd64/sid 2:2.21.15-2+b2 uptodate
xserver-xorg-video-intel:i386 not installed
libdrm-dev:amd64/sid 2.4.58-2 uptodate
libdrm-dev:i386 not installed
libdrm-intel1:amd64/sid 2.4.58-2 uptodate
libdrm-intel1:i386/sid 2.4.58-2 uptodate
libdrm-nouveau2:amd64/sid 2.4.58-2 uptodate
libdrm-nouveau2:i386/sid 2.4.58-2 uptodate
libdrm-radeon1:amd64/sid 2.4.58-2 uptodate
libdrm-radeon1:i386/sid 2.4.58-2 uptodate
libdrm2:amd64/sid 2.4.58-2 uptodate
libdrm2:i386/sid 2.4.58-2 uptodate

Thanks,
Martin

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