Laptop doesn't wake up from deep sleep.

[Mikhail Glagolev]

While on battery power, Asus Zenbook UX461U laptop can't wake up from suspend with mem_sleep_default=deep kernel option.

Upon opening the lid or pressing the power button the power LED switches from blinking to constant light, the keyboard LEDs blink instantly, but nothing more happens. Apart from the power LED the laptop doesn't show any signs of operation. The keyboard backlight doesn't work. The only way out of this state is powering the laptop off by long pressing the power button.

On AC power, the laptop resumes from deep sleep normally.

Deep sleep is crucial, because without the mem_sleep_default=deep option battery drain is very high (several percent per hour).

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-12-generic 4.18.0-12.13
ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17
Uname: Linux 4.18.0-12-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: misha 2527 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu Dec 6 16:24:58 2018
HibernationDevice: RESUME=UUID=28642731-be8e-4c6b-9cfe-74d637c87bf0
InstallationDate: Installed on 2018-07-30 (129 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 8087:0a2b Intel Corp.
 Bus 001 Device 002: ID 13d3:56a2 IMC Networks
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX461UA
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-12-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.18.0-12-generic N/A
 linux-backports-modules-4.18.0-12-generic N/A
 linux-firmware 1.175.1
SourcePackage: linux
UpgradeStatus: Upgraded to cosmic on 2018-12-01 (5 days ago)
dmi.bios.date: 03/16/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX461UA.312
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX461UA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX461UA.312:bd03/16/2018:svnASUSTeKCOMPUTERINC.:pnUX461UA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX461UA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct31:cvr1.0:
dmi.product.family: ZenBook Flip
dmi.product.name: UX461UA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Mikhail Glagolev (mike-glagolev)]

The bug is also present in 19.04, kernel 5.0.0-15
The behavior is identical with X server and Wayland.

[Kai-Heng Feng (kaihengfeng)]

What happens if s2idle is used instead?

[Anton (sharrp)]

I have the same issue on XPS 13 9300 with Ubuntu 18.04.
Answering @kaihengfeng's question: with s2idle it works just fine from waking up perspective but as Mikhail mentioned it drains battery a lot.

[Kai-Heng Feng (kaihengfeng)]

Anton,

Can you please test 20.04? It should improve a lot.

[Mikhail Glagolev (mike-glagolev)]

Hi everyone!

I'm on 19.10 now, and the things didn't improve.

My laptop has a touchscreen and a G-sensor, and often upon waking from s2idle the touchpad doesn't work (while the touchscreen does), and the screen is stuck in portrait orientation. This may be caused by keeping the idle laptop in the "portrait" orientation in the backpack.

The only solution I found is to completely shut the laptop down.
Thanks Kai-Heng for the advice, will upgrade to 20.04 and try.

[Mikhail Glagolev (mike-glagolev)]

The bug is still present in 20.04.
The "shallow" mode doesn't cause the problem, but the battery drain is about 10% of that during normal operation without stress (browsing, terminal, text editor, etc.).

[Alex Denisov (ald8)]

For me the issue was in secure boot (should be disabled) and in swapfile (should exist == your RAM)