[Bug 1538880] Re: Using DistUpgradeViewNonInteractive causes output to be garbled.

[Launchpad Bug Tracker]

This bug was fixed in the package ubuntu-release-upgrader - 1:16.04.4

---------------
ubuntu-release-upgrader (1:16.04.4) xenial; urgency=medium

  * DistUpgrade/DistUpgradeMain.py: check the apt cache to see what version of
    apt is installed rather than using the apt VERSION string. (LP: #1306065)
  * test/test_sources_list.py: resolve test failures.
  * DistUpgrade/DistUpgradeCache.py: log packages which will be downgraded.
  * DistUpgrade/DistUpgradeNonInteractive.py: Ensure output when using
    is not garbled as single bytestream escaped characters. Thanks to
    Christopher Lee for the patch. (LP: #1538880)

 -- Brian Murray <brian at ubuntu.com>  Thu, 28 Jan 2016 15:39:09 -0800

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1538880

Title:
  Using DistUpgradeViewNonInteractive causes output to be garbled.

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Released
Status in ubuntu-release-upgrader source package in Wily:
  Triaged

Bug description:
  When using the frontend DistUpgradeViewNonInteractive the stdout
  logging during the install/update is garbled as each character is
  shown as a single character bytestream, example:

  b'\r'b'E'b'x'b't'b'r'b'a'b'c'b't'b'i'b'n'b'g'b' 'b't'b'e'b'm'b'p'b'l'b'a'b't'b'e'b's'b' 'b'f'b'r'b'o'b'm'b' 'b'p'b'a'b'c'b'k'b'a'b'g'b'e'b's'b':'b' 'b'1'b'0'b'%'b'\r'b'E'b'x'b't'b'r'b'a'b'c'b't'b'i'b'n'b'g'b' 'b't'b'e'b'm'b'p'b'l'b'a'b't'b'e'b's'b' 'b'f'b'r'b'o'b'm'b' 'b'p'b'a'b'c'b'k'b'a'b'g'b'e'b's'b':'b' 'b'2'b'0'b'%'b'\r'b'E'b'x'b't'b'r'b'a'b'c'b't'b'i'b'n'b'g'b' 'b't'b'e'b'm'b'p'b'l'b'a'b't'b'e'b's'b' 'b'f'b'r'b'o'b'm'b' 'b'p'b'a'b'c'b'k'b'a'b'g'b'e'b's'b':'b' 'b'3'b'0'b'%'b'\r'b'E'b'x'b't'b'r'b'a'b'c'b't'b'i'b'n'b'g'b' 'b't'b'e'b'm'b'p'b'l'b'a'b't'b'e'b's'b' 'b'f'b'r'b'o'b'm'b' 'b'p'b'a'b'c'b'k'b'a'b'g'b'e'b's'b':'b' 'b'4'b'0'b'%'b'\r'b'E'b'x'b't'b'r'b'a'b'c'b't'b'i'b'n'b'g'b' 'b't'b'e'b'm'b'p'b'l'b'a'b't'b'e'b's'b'
   -- 8< -- snip  -- 8< --

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