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[Bug 1752362] Re: garbled recovery mode in Simplified Chinese language OS install

 

Example of the recovery mode with zh_CN.UTF-8 (which is 1 of the
blacklisted language)

** Attachment added: "recovery-mode-output"
   https://bugs.launchpad.net/ubuntu/+source/friendly-recovery/+bug/1752362/+attachment/5065332/+files/LANG.png

** Description changed:

  [Impact]
  
  The menu is garbled in recovery mode when using CJK font in Linux
  console.
  
  [Test Case]
  
  1. Install Ubuntu with selected Simplified Chinese language.
  2. Boot to recovery mode.
- 3. Most character won't be seen and appear in a square shape.
+ 3. Most character won't be seen and appear in a square shape. 
+ (See "Bug attachment" for a screenshot)
  
  [Regression Potential]
  
  Regression risk is low. The fix simply default the system variables to
  something the console can output when detecting a blacklisted LANG in
  lib/recovery-mode/l10n.sh.
  
  +           export LANG=C.UTF-8
  +           export LANGUAGE=en
  
  [Other Info]
  
  Old LP reference :
  https://bugs.launchpad.net/bugs/573502

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https://bugs.launchpad.net/bugs/1752362

Title:
  garbled recovery mode in Simplified Chinese language OS install

Status in friendly-recovery package in Ubuntu:
  In Progress
Status in friendly-recovery source package in Trusty:
  New
Status in friendly-recovery source package in Xenial:
  Confirmed
Status in friendly-recovery source package in Artful:
  Confirmed
Status in friendly-recovery source package in Bionic:
  In Progress

Bug description:
  [Impact]

  The menu is garbled in recovery mode when using CJK font in Linux
  console.

  [Test Case]

  1. Install Ubuntu with selected Simplified Chinese language.
  2. Boot to recovery mode.
  3. Most character won't be seen and appear in a square shape. 
  (See "Bug attachment" for a screenshot)

  [Regression Potential]

  Regression risk is low. The fix simply default the system variables to
  something the console can output when detecting a blacklisted LANG in
  lib/recovery-mode/l10n.sh.

  +           export LANG=C.UTF-8
  +           export LANGUAGE=en

  [Other Info]

  Old LP reference :
  https://bugs.launchpad.net/bugs/573502

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