Freezes instead of suspending, most times

[Shahar Or]

Hi and thank you for all your free software work.

This system usually freezes instead of suspending.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-29-generic 5.0.0-29.31
ProcVersionSignature: Ubuntu 5.0.0-29.31-generic 5.0.21
Uname: Linux 5.0.0-29-generic x86_64
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: mightyiam 2139 F.... pulseaudio
 /dev/snd/controlC0: mightyiam 2139 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 1 20:28:30 2019
MachineType: Micro-Star International Co., Ltd. GS60 2QE
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.0.0-29-generic root=/dev/mapper/ubuntu-encrypted_root_crypt ro splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-5.0.0-29-generic N/A
 linux-backports-modules-5.0.0-29-generic N/A
 linux-firmware 1.178.3
SourcePackage: linux
UpgradeStatus: Upgraded to disco on 2019-06-11 (112 days ago)
dmi.bios.date: 02/22/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: E16H5IMS.111
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: MS-16H5
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: REV:0.B
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrE16H5IMS.111:bd02/22/2016:svnMicro-StarInternationalCo.,Ltd.:pnGS602QE:pvrREV1.0:rvnMicro-StarInternationalCo.,Ltd.:rnMS-16H5:rvrREV0.B:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: GS60 2QE
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: REV:1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Please collect log via `journalctl -b -1 -k` at next boot after freeze.

[Shahar Or (mightyiam)]

Thank you for your assistance, Kai-Heng. Attached is the output of the command you specified.

[Kai-Heng Feng (kaihengfeng)]

Unfortunately I don't see suspend attempt in the log.

Is this a regression?

[Shahar Or (mightyiam)]

Thank you for following up, Kai-Heng.

To answer your question, I don't remember ever having a reliable suspend in this system.

[Kai-Heng Feng (kaihengfeng)]

Please see if this helps:
# echo s2idle > /sys/power/mem_sleep
# systemctl suspend

[Shahar Or (mightyiam)]

Thank you for the follow-up, Kai-Heng.

Before altering the value, I checked and `cat /sys/power/mem_sleep` returned `s2idle [deep]`.

And now the command you suggested seems to have changed it to `[s2idle] deep`.

I will post this and then run `# systemctl suspend`.

[Shahar Or (mightyiam)]

Same symptoms. Keyboard backlights are on. Power button LED on. No suspension. Turned off via power button long press.

Here's the output of `journalctl -b -1 -k`.

[Shahar Or (mightyiam)]

In case it could help, here's the output of the same command after a successful suspend/resume.

[Kai-Heng Feng (kaihengfeng)]

Can you please try kernel parameter "blacklist=nouveau modprobe.blacklist=nouveau"?

[Shahar Or (mightyiam)]

Thank you for your suggestion, Kai-Heng. I did that in `/etc/default/grub`. After editing I ran `sudo update-grub` without trouble. I rebooted and made sure with `lsmod` that `nouveau` is not loaded. And I still got a freeze.

Is there anything else we could investigate, please?

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.5-rc1/

[Shahar Or (mightyiam)]

Thank you for following up, Kai-Heng.

I downloaded these files:

```
-rw-r--r-- 1 mightyiam mightyiam 11M Dec 12 18:57 temp/linux-headers-5.5.0-050500rc1_5.5.0-050500rc1.201912081930_all.deb
-rw-r--r-- 1 mightyiam mightyiam 1.2M Dec 12 18:42 temp/linux-headers-5.5.0-050500rc1-generic_5.5.0-050500rc1.201912081930_amd64.deb
-rw-r--r-- 1 mightyiam mightyiam 8.6M Dec 12 18:43 temp/linux-image-unsigned-5.5.0-050500rc1-generic_5.5.0-050500rc1.201912081930_amd64.deb
-rw-r--r-- 1 mightyiam mightyiam 50M Dec 12 18:48 temp/linux-modules-5.5.0-050500rc1-generic_5.5.0-050500rc1.201912081930_amd64.deb
```

And installed via `dpkg -i <files...>`.

Then rebooted and made sure to select this 5.5 kernel in the GRUB boot menu.

Suspend failed with the same symptoms 2 out of 5 times I tried.

[Kai-Heng Feng (kaihengfeng)]

Can you please remove the mainline kernel, install Nvidia proprietary driver and retest?
nouveau.ko doesn't have best support to nvidia cards.

[Shahar Or (mightyiam)]

Thank you for the suggestion, Kai-Heng.

Tried with the nvidia-driver-435 installed, after reboot, and 2 out of 2 failures. I also made sure that `lsmod | grep nvidia` prints some modules. Not sure which modules exactly I'm looking for. Perhaps looking at some logs would be better, but I have a feeling that's sufficient.

What did we learn, please?

[Kai-Heng Feng (kaihengfeng)]

Yes, please attach dmesg.

[Shahar Or (mightyiam)]

Thank you for responding, Kai-Heng. Attached.

[Kai-Heng Feng (kaihengfeng)]

Suspend/resume bugs are hard to debug without physical access.
If lastest kernel and lastest Nvidia driver don't help, we are out of luck.

[Shahar Or (mightyiam)]

Alrighty. Thank you for you attempts, Kai-Heng.