[Bug 1809556] Re: zram freezes computer

[Elvis de Freitas Souza]

ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: typer 2994 F.... pulseaudio
 /dev/snd/pcmC0D0p: typer 2994 F...m pulseaudio
CurrentDesktop: LXQt
DistroRelease: Ubuntu 18.10
InstallationDate: Installed on 2018-12-20 (2 days ago)
InstallationMedia: Lubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
 Bus 001 Device 002: ID 046d:c083 Logitech, Inc.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Gigabyte Technology Co., Ltd. B360M-D3H
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-12-generic root=UUID=ba2e86e4-48ce-47f3-a413-98536fe6febd ro quiet splash resume=UUID=5b571422-2d63-4044-88be-ecd5e66732d8 vt.handoff=1
ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17
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
RfKill:

Tags: cosmic
Uname: Linux 4.18.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sudo
_MarkForUpload: True
dmi.bios.date: 04/19/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F4
dmi.board.asset.tag: Default string
dmi.board.name: B360M D3H-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF4:bd04/19/2018:svnGigabyteTechnologyCo.,Ltd.:pnB360M-D3H:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnB360MD3H-CF:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: B360M-D3H
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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https://bugs.launchpad.net/bugs/1809556

Title:
  zram freezes computer

Status in zram-config package in Ubuntu:
  New

Bug description:
  I bought a new setup and since then my computer is having random
  freezes, it stop respond until you make a hard reset (pressing reset
  button)

  * I noticed that this issue is more common when running java programs, i.e. Intellij, Spring Boot applications (I'm a java developer) and using chrome.
  * I also noticed issue is not related to high CPU usage

  Steps I did to reproduce the issues

  * Turned computer on
  * Started Intellij
  * Opened chrome and let a video playing
  * Started a java application with a considerable consume of memory (500MB)
  * Keep starting and stopping that application

  I did the following tests and had the same results

  * Tested on ubuntu 16.04, 18.04, 18.10 with it's original kernels, also tested on kernel 4.19
  * Tested with nouveau (With and without GPU installed)
  * Tested with Nvidia proprietary drivers
  * Tested with Nvidia ubuntu repository drivers
  * Installed latest BIOs
  * Removed one of my two memories

  Steps I did to stress my computer and got no issues

  * Ran memtest (got no issues)
  * Stressed my computer and RAM with stress tool (got not issues)

  Steps to fix the problem

  * apt purge -y zram-config
  * Restart the computer

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