ubuntu-multiseat team mailing list archive

[dino99 <997483@xxxxxxxxxxxxxxxxxx>]

Possibly fixed, and may need an SRU for older releases

lightdm (1.21.4-0ubuntu1) zesty; urgency=medium

  * New upstream release:
    - Use power management functions from ConsoleKit2 if available.
    - Correctly pass return value from sessions to LightDM.
    - Retry VT_WAITACTIVE if we get EINTR.
    - Ignore SIGHUP by default.
    - Use SA_RESTART with SIGPIPE.
    - liblightdm-qt: Use liblightdm-gobject power methods instead of
      re-implementing in Qt.
  * debian/liblightdm-qt-3-0.symbols:
  * debian/liblightdm-qt5-3-0.symbols:
    - Add symbols files for C++ libraries

 -- Robert Ancell <robert.ancell@xxxxxxxxxxxxx>  Mon, 13 Feb 2017
16:31:48 +1300


** Changed in: lightdm (Ubuntu)
       Status: Confirmed => Incomplete

** Changed in: lightdm
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/997483

Title:
  VT_WAITACTIVE does not work well with a multiseat setup

Status in Light Display Manager:
  Incomplete
Status in lightdm package in Ubuntu:
  Incomplete

Bug description:
  Related to the fix introduced in bug #851612 .

  Saw this in lightdm.log (system call interrupted because of ctrl-alt-del pressed):
  [+2.97s] DEBUG: New display ready, switching to it
  [+2.97s] DEBUG: Activating VT 8
  [+77.56s] WARNING: Error using VT_WAITACTIVE 8 on /dev/console: Interrupted system call
  [+77.56s] DEBUG: Got signal 15 from process 1
  [+77.56s] DEBUG: Caught Terminated signal, shutting down

  And in x-1-greeter.log:
  [+0.48s] DEBUG: Loading users from org.freedesktop.Accounts
  [+0.48s] DEBUG: Loading user /org/freedesktop/Accounts/User1001
  [+0.50s] DEBUG: Loading user /org/freedesktop/Accounts/User1000
  [+50.56s] WARNING: Error getting session list from org.freedesktop.DisplayManager: Timeout was reached

  On vt7, unity-greeter would get stuck after password input.
  On vt8, unity-greeter appears after that "getting session list timeout", which is about a minute later than vt7, and does not have a password input field.

  lightdm blocked by VT_WAITACTIVE may be the cause...

  Tested with lightdm 1.2.0-0ubuntu2 in precise.

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