[Bug 1607779] Re: Failed to create sharedmemoryfile /WK2SharedMemory.XXXXXXXX: Permission denied

[Simon Quigley]

** Changed in: ubiquity (Ubuntu)
       Status: Confirmed => Won't Fix

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Title:
  Failed to create sharedmemoryfile /WK2SharedMemory.XXXXXXXX:
  Permission denied

Status in ubiquity package in Ubuntu:
  Won't Fix

Bug description:
  Observed behaviour: the Ubuntu installer slows down to a crawl at the
  stage of restoring previously installed packages.

  The following message is displayed in the installers terminal view:
  Failed to create sharedmemoryfile /WK2SharedMemory.XXXXXXXX:
  Permission denied

  Steps to reproduce:

  1. Have an already installed version of 14.04 or 16.04
  2. Start the Ubuntu 16.04(.1) installer from desktop installation media
  3. Choose to do "something else" instead of installing over or alongside and choose the previous root partition for the new root partition but _don't_ format it.
  4. Continue with the installation as usual.
  5. Open a terminal and run `top` to monitor the CPU load, at the stage of "restoring previously installed packages" a WebKitWebProcess shows up consuming almost 100% of CPU resources. After Killing it with `killall WebKitWebProcess` the installation continues.

  This has been reproducible on al laptop for 14.04 and 16.04 as well as
  VirtualBox VMs with 14.04 and 16.04 preinstalled. Installing a package
  like lyx (pulls in tex dependencies and many megabytes of data) might
  help triggering this bug but I also encountered it without lyx
  preinstalled during tests.

  Bugs found with related error messages:
  https://bugs.webkit.org/show_bug.cgi?id=134892

  Users on AskUbuntu reporting this issue:
  http://askubuntu.com/q/761930/40581

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