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https://bugs.launchpad.net/bugs/1884396

Title:
  Ubuntu freezing intermittently when the mega.nz appindicator is loaded

Status in Ubuntu AppIndicators:
  Unknown
Status in gnome-shell-extension-appindicator package in Ubuntu:
  Fix Released
Status in gnome-shell-extension-appindicator source package in Focal:
  Fix Committed

Bug description:
  [ Impact ]

  Indicators using (big) pixmap icons cause the shell to use a lot of
  CPU computation, which interfere with user experience

  [ Test case ]

  - Install mega client from https://mega.nz/sync
  - Run it in ubuntu and ensure it doesn't block the UI while syncing
    (but even opening/closing the app should be enough to trigger

  Alternatively use this test tool:
   
https://github.com/ubuntu/gnome-shell-extension-appindicator/blob/master/indicator-test-tool/testTool.js

  Launch it with `gjs` and select the 'Crazy icons updates' menu item:
   - The shell should not hang

  [ Regression potential ]

  Icon updates may be late or not apply immediately (or at all).

  In general there has been a refactor of the iconCache, so internally
  it may happen that we load an icon more times, or that there could be
  an increase in RAM usage as per missing garbage collecting of it.

  ----

  I had similar issues when 20.04 was released, then it disappeared with
  an upgrade - but sadly it's back. I have short intermittent freezings
  of the OS. About every 15-30 seconds Ubunut freezes for a second or
  two. Eg when writing this description, the OS freezes every second
  word. When the freeze goes away the OS is snappy. I have tried
  switching between Wayland and Xorg - but the problem persists. If I
  write something when it freezes up the last
  chhhhhhhhhhhhhhhhhhhhhhhhhhhhharacter will be replicated many times -
  like what happened jusssssssssssssssssssssssssssssssst now. This
  problem did not show up in ubuntu 18.04 through 19.10. Hope U can
  fix this soon - using my laptop in unbearable.

  ProblemType: BugDistroRelease: Ubuntu 20.04
  Package: xorg 1:7.7+19ubuntu14
  ProcVersionSignature: Ubuntu 5.4.0-37.41-generic 5.4.41
  Uname: Linux 5.4.0-37-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.3
  Architecture: amd64
  BootLog: Error: [Errno 13] Åtkomst nekas: '/var/log/boot.log'
  CasperMD5CheckResult: skip
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Jun 20 23:54:52 2020
  DistUpgraded: Fresh install
  DistroCodename: focal
  DistroVariant: ubuntu
  DkmsStatus: evdi, 1.7.0, 5.4.0-33-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA 
controller])
     Subsystem: Huawei Technologies Co., Ltd. UHD Graphics 620 [19e5:3e04]
  InstallationDate: Installed on 2020-05-12 (38 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 05c8:03c0 Cheng Uei Precision Industry Co., Ltd 
(Foxlink) HD Camera
   Bus 001 Device 002: ID 8087:0a2b Intel Corp.
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: HUAWEI MACH-WX9
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=sv_SE.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-37-generic 
root=UUID=a2cbbb7f-c619-418a-a98f-9a9cc31b42fa ro quiet splash 
vt.handoff=7SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/15/2019
  dmi.bios.vendor: HUAWEI
  dmi.bios.version: 1.28
  dmi.board.name: MACH-WX9-PCB
  dmi.board.vendor: HUAWEI
  dmi.board.version: M13
  dmi.chassis.type: 10
  dmi.chassis.vendor: HUAWEI
  dmi.chassis.version: M13
  dmi.modalias: 
dmi:bvnHUAWEI:bvr1.28:bd03/15/2019:svnHUAWEI:pnMACH-WX9:pvrM13:rvnHUAWEI:rnMACH-WX9-PCB:rvrM13:cvnHUAWEI:ct10:cvrM13:
  dmi.product.family: MateBook X
  dmi.product.name: MACH-WX9
  dmi.product.sku: C189
  dmi.product.version: M13
  dmi.sys.vendor: HUAWEI
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.101-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
  version.libgl1-mesa-glx: libgl1-mesa-glx N/A
  version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.1
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20200226-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

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