apport information

** Attachment added: "ProcEnviron.txt"
   
https://bugs.launchpad.net/bugs/2064483/+attachment/5773803/+files/ProcEnviron.txt

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https://bugs.launchpad.net/bugs/2064483

Title:
  Ubuntu 24.04 doesn't respect vm.swappiness

Status in linux package in Ubuntu:
  New
Status in linux source package in Noble:
  New

Bug description:
  My sysctl vm.swappiness returns vm.swappiness = 180.

  Swap kicked in when RAM is filled around 95%. I’m using zRAM as the
  swap.

  When this happened, my laptop is barely usable, as the system would
  have to do both the swap and compression at the same time. If
  `vm.swappiness = 180` worked as intended, the issue wouldn't have
  happened, as the swap would kick in early, which is good for zRAM
  system like mine, see kernel docs: https://docs.kernel.org/admin-
  guide/sysctl/vm.html#swappiness

  This is my main workstation (laptop). I used to run openSUSE
  Tumbleweed on it (~2 years). The experience with `vm.swappiness` is
  totally different.

  ---

  Here's my zRAM script:

  ```
  #!/bin/bash

  mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching 
'[[:digit:]]+')
  mem_total=$((mem_total_kb * 1536))

  modprobe zram

  echo zstd > /sys/block/zram0/comp_algorithm;
  echo $mem_total > /sys/block/zram0/disksize

  mkswap /dev/zram0

  swapon -p 100 /dev/zram0

  ```

  Here's the content of my /etc/sysctl.conf

  ```
  vm.swappiness=180
  vm.page-cluster=0
  vm.watermark_scaling_factor=125
  vm.watermark_boost_factor=0
  ```

  I make a fresh install, not upgrading from the previous release.

  I also upload the screen recording of this issue on my personal Proton
  drive here:

  https://drive.proton.me/urls/5KTCS1DF58#qZTscuv5XE0M

  I mount ~/ramtest in the RAM, then copy the system's usr folder to ~/ramtest. 
Since most contents in usr are compressible, it should be perfect to show this 
issue.
  --- 
  ProblemType: Bug
  ApportVersion: 2.28.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/seq:        archerallstars   4444 F.... pipewire
   /dev/snd/controlC0:  archerallstars   4448 F.... wireplumber
  CRDA: N/A
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 24.04
  InstallationDate: Installed on 2024-04-27 (5 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  MachineType: Acer Swift SF514-52T
  NonfreeKernelModules: zfs
  Package: linux (not installed)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_o799y4@/vmlinuz-6.8.0-31-generic 
root=ZFS=rpool/ROOT/ubuntu_o799y4 ro quiet splash vt.handoff=1
  ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-6.8.0-31-generic N/A
   linux-backports-modules-6.8.0-31-generic  N/A
   linux-firmware                            20240318.git3b128b60-0ubuntu2
  Tags: noble wayland-session
  Uname: Linux 6.8.0-31-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip libvirt lpadmin plugdev sudo users
  _MarkForUpload: True
  dmi.bios.date: 11/26/2018
  dmi.bios.release: 1.11
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.11
  dmi.board.name: Carlsberg_KL
  dmi.board.vendor: KBL
  dmi.board.version: V1.11
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V1.11
  dmi.ec.firmware.release: 1.5
  dmi.modalias: 
dmi:bvnInsydeCorp.:bvrV1.11:bd11/26/2018:br1.11:efr1.5:svnAcer:pnSwiftSF514-52T:pvrV1.11:rvnKBL:rnCarlsberg_KL:rvrV1.11:cvnAcer:ct10:cvrV1.11:sku0000000000000000:
  dmi.product.family: Swift 5
  dmi.product.name: Swift SF514-52T
  dmi.product.sku: 0000000000000000
  dmi.product.version: V1.11
  dmi.sys.vendor: Acer
  modified.conffile..etc.default.apport:
   # set this to 0 to disable apport, or to 1 to enable it
   # you can temporarily override this with
   # sudo service apport start force_start=1
   enabled=0
  mtime.conffile..etc.default.apport: 2024-04-27T05:52:33.862578

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