Hi!
Its just as this:
Linux 4.0: It writes hibernation image and resumes (sometimes with that
black screen doing nothing delay
https://bugzilla.kernel.org/show_bug.cgi?id=94241).
Linux 4.1 as of 4a152c3913fb46fc2e29081d0251862106c3d55f: It writes
hibernation image and does not resume. Instead it boots as if no hibernation
image would have been written, but from what I can see it does write the
image. I see the 10% progress steps being printed out.
ThinkPad T520:
martin@merkaba:~> phoronix-test-suite system-info
Phoronix Test Suite v5.2.1
System Information
Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO
42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB,
Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel HD
3000 (1300MHz), Audio: Intel 6 /C200, Monitor: P24T-7 LED, Network: Intel
82579LM Gigabit Connection + Intel Centrino Advanced-N 6205
Software:
OS: Debian unstable, Kernel: 4.0.0-tp520-btrfs-trim+ (x86_64), Desktop: KDE
4.14.2, Display Server: X Server 1.16.4, Display Driver: intel 2.21.15,
OpenGL: 3.3 Mesa 10.4.2, Compiler: GCC 4.9.2, File-System: btrfs, Screen
Resolution: 3840x1080
Attached find xz compressed excerpt of kern.log with last 4.1 cycle as well
as 4.0 cycle.
It says
PM: Hibernation image not present or could not be loaded.
for the 4.1 case. It says so on the first boot of 4.0 again as well, but then
it works as you can see later in the log.
Attached also find kernel configuration for 4.0 and 4.1. They are vanilla
except one (4.0) or two (4.1) BTRFS related patches.
Userspace is Debian Sid
merkaba:~> apt-show-versions | egrep "pm-utils|^systemd:"
pm-utils:all/sid 1.4.1-15 uptodate
systemd:amd64/experimental 219-8 uptodate
systemd:i386 not installed
In kernel hibernation is used (no userspace assisted hibernation):
merkaba:~> cat /etc/pm/config.d/sleepmodule.conf
SLEEP_MODULE=kernel
merkaba:~> cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-4.0.0-tp520-btrfs-trim+ root=/dev/mapper/sata-debian ro
rootflags=subvol=debian resume=/dev/mapper/sata-swap init=/bin/systemd
no_console_suspend
According to grub.cfg it should be the same with 4.1:
linux /vmlinuz-4.1.0-rc1-tp520-btrfs-trim-norace+ root=/dev/mapper/sata-
debian ro rootflags=subvol=debian resume=/dev/mapper/sata-swap
init=/bin/systemd no_console_suspend
Back to 4.0 as I need this laptop for production next week.
Thanks,
--
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7