[Bug 1767896] Re: Live 18.04 with broken seed causes snapd high CPU usage

[Daniel van Vugt]

Sorry, my local file name must be a mistake. No image with that date
exists.

** Changed in: ubuntu-meta (Ubuntu)
   Importance: Undecided => High

** Changed in: snapd (Ubuntu)
   Importance: Undecided => High

** Summary changed:

- Live 18.04 with broken seed causes snapd high CPU usage
+ Live 18.04 with broken seed causes snapd high CPU usage and periodic short GUI freezes

** Description changed:

  ThinkPad 25, UEFI mode, Ubuntu 18.04 installed as a _live_ distro in
  FAT32 partition on SATA SSD in WWAN slot.
  
  Grub options allow booting without persistence or with a 256MB
  persistence file.  Only thing "persisted" is TERM in favorites.
  
  Without persistence all is well. With persistence snapd uses up to 90%
  CPU - perhaps more - and cripples the system. Fan runs nearly full speed
  constantly.
  
  I can eliminate the problem by removing snapd - and that persists.
  Can't kill snapd.  PID is constantly changing.
  
  0% fan  and low CPU use at idle w/out snapd with persistence, or booted
  w/out persistence.
+ 
+ WORKAROUND:
+ sudo systemctl stop snapd

** Summary changed:

- Live 18.04 with broken seed causes snapd high CPU usage and periodic short GUI freezes
+ Live images with broken seed causes snapd high CPU usage and periodic short GUI freezes

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https://bugs.launchpad.net/bugs/1767896

Title:
  Live images with broken seed causes snapd high CPU usage and periodic
  short GUI freezes

Status in OEM Priority Project:
  Fix Released
Status in snapd package in Ubuntu:
  Won't Fix
Status in ubuntu-meta package in Ubuntu:
  Fix Released

Bug description:
  ThinkPad 25, UEFI mode, Ubuntu 18.04 installed as a _live_ distro in
  FAT32 partition on SATA SSD in WWAN slot.

  Grub options allow booting without persistence or with a 256MB
  persistence file.  Only thing "persisted" is TERM in favorites.

  Without persistence all is well. With persistence snapd uses up to 90%
  CPU - perhaps more - and cripples the system. Fan runs nearly full
  speed constantly.

  I can eliminate the problem by removing snapd - and that persists.
  Can't kill snapd.  PID is constantly changing.

  0% fan  and low CPU use at idle w/out snapd with persistence, or
  booted w/out persistence.

  WORKAROUND:
  sudo systemctl stop snapd

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