[Bug 1853343] Re: [SRU] Please detect sound and X server in WSL2, too

[Balint Reczey]

** Attachment added: "wslu-detection-no-pa-servers-not-running-wsl2.png"
   https://bugs.launchpad.net/ubuntu/+source/wslu/+bug/1853343/+attachment/5314036/+files/wslu-detection-no-pa-servers-not-running-wsl2.png

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to wslu in Ubuntu.
https://bugs.launchpad.net/bugs/1853343

Title:
  [SRU] Please detect sound and X server in WSL2, too

Status in wslu package in Ubuntu:
  Fix Released
Status in wslu source package in Xenial:
  Fix Committed
Status in wslu source package in Bionic:
  Fix Committed
Status in wslu source package in Disco:
  Fix Committed
Status in wslu source package in Eoan:
  Fix Committed

Bug description:
  [Impact]

   * Ubuntu in WSL2 does not detect the PulseAudio or X11 server running on Windows. Detecting them is easy and doing so improves the setup experience.
   * The additional detection logic slowed down the login further, thus a minor speed optimization is also part of the change.

  [Test Case] (Run once in WSL1 and once in WSL2)

   * Install and start PulseAudio for Windows ( https://wiki.ubuntu.com/WSL#Enabling_Sound )
   * Install and start an X11 server for Windows ( https://wiki.ubuntu.com/WSL#Running_Graphical_Applications )
   * Start the Ubuntu WSL terminal
   * Make sure pulseaudio is not installed:
     $ pulseaudio

     Command 'pulseaudio' not found, but can be installed with:

     apt install pulseaudio

   * Observe environment variables properly set:
     $ echo DISPLAY=$DISPLAY PULSE_SERVER=$PULSE_SERVER

   * Install pulseaudio
     $ sudo apt install pulseaudio
   * Close all Ubuntu WSL sessions
   * Start the Ubuntu WSL terminal again
   * Observe environment variables properly set:
     $ echo DISPLAY=$DISPLAY PULSE_SERVER=$PULSE_SERVER

  (Opening and closing the terminal can be replaced by clearing the
  environment variables and the cache implemented in LP: #1855898)

  [Regression Potential]

   * Since the detection takes place in setting the profile mistakes in
  the implementation may trigger errors show to the users on login.
  Detecting X and PulseAudio may also break in WSL1 with  the changed
  detection logic, but tests include verifying that this still works.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/wslu/+bug/1853343/+subscriptions