Lenin, thank you for reporting this and helping make Ubuntu better. Because
Samsung does not easily reveal what the latest BIOS is for this model, could
you please download the latest firmware software as per
http://www.samsung.com/in/support/model/NP535U3X-A01BD-downloads , and advise
if a
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-lts-raring (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/1263223
As described at: https://wiki.ubuntu.com/DebuggingKernelSuspend
** Attachment added: WakeUP log
https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1263223/+attachment/3933425/+files/wakeup.log
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Bugs, which
cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic
root=UUID=da65b9b9-e593-45f1-b4bd-882743336ccc ro quiet splash vt.handoff=7
cat /etc/initramfs-tools/conf.d/resume
RESUME=UUID=ef7489e8-de5f-4605-9ed9-049640374ae4
sudo sh -c sync echo 1 /sys/power/pm_trace pm-suspend
sh: 1:
sudo -i
echo devices /sys/power/pm_test
zsh: no such file or directory: /sys/power/pm_test
echo platform /sys/power/disk
echo disk /sys/power/state
dmesg /tmp/dmesg-devices-platform.txt
** Attachment added: dmesg-devices-platform.txt
Amazingly,
echo reboot /sys/power/disk
echo disk /sys/power/state
The above pair of command works for the suspend/hibernate!
After executing it goes to suspend/hibernate and then after pressing
power button it successfully turns on back to its past state!
Also, need to mention:
https://wiki.ubuntu.com/DebuggingKernelSuspendHibernateResume#Dead.2C_Blank.2C_or_Black_Screen_on_Resume
grub nomodeset option doesn't resolve this exact issue.
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zenideas# sudo bash /usr/share/checkbox/scripts/suspend_test --full
This script will attempt to suspend and resume your computer a number of times.
Should the machine fail to resume, first attempt to manually resume it. If
that fails power your system off and on which will generate an apport bug
