[Bug 933626] Re: acpi-support should use ck-list-sessions to determine active X display and X user

[Ayan George]

Debdiff from acpi-support .138 to .138-ubuntu1

** Description changed:

+ SRU Justificaiton
+ -----------------
  
- The acpi-support scripts use 'ps' and 'who' output to determine the current active X display and X user (in getXconsole and getXuser).  Currently, LightDM does not write to utmp so 'who' does not output the correct information breaking getXconsole and getXuser.  
+ Impact:
+ 
+ This bug impacts all Oneiric systems which use LightDM and are affected
+ by lp870297 (Lightdm logins not being logged in wtmp).
+ 
+ In Oneiric, acpi-support depends on wtmp entries to determine the active
+ console with getXconsole and getXuser.  Since LightDM doesn't write to
+ wtmp, this affects all systems that use acpi-support scripts to handle
+ ACPI hotkey events -- including yet to be released hardware in the
+ enablement/certification queue.
+ 
+ Fix:
+ 
+ The fix is to backport the changes made in Precise to Oneiric.  This
+ includes implementing getXuser and getXconsole with ConsoleKit (ck-list-
+ sessions).
+ 
+ Patch:
+ 
+ This change is already in acpi-support .139:
+ 
+   http://launchpadlibrarian.net/95198647/acpi-
+ support_0.138_0.139.diff.gz
+ 
+ I've attached a debdiff that backports that change to acpi-support .139
+ in Oneiric.
+ 
+ Regression Potential:
+ 
+ There should be very little potential for regression.  In fact, this
+ should fix machines affected by lp87029, including OEM systems.
+ 
+ ------------------------
+ 
+ The acpi-support scripts use 'ps' and 'who' output to determine the
+ current active X display and X user (in getXconsole and getXuser).
+ Currently, LightDM does not write to utmp so 'who' does not output the
+ correct information breaking getXconsole and getXuser.
  
  ConsoleKit properly maintains the state of the console and probably
  should be used instead.
  
  I've attached a patch that re-implements getXconsole and getXuser by
  calling ck-list-sessions.

** Patch added: "acpi-support.diff"
   https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/933626/+attachment/2997934/+files/acpi-support.diff

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https://bugs.launchpad.net/bugs/933626

Title:
  acpi-support should use ck-list-sessions to determine active X display
  and X user

Status in “acpi-support” package in Ubuntu:
  Fix Released

Bug description:
  SRU Justificaiton
  -----------------

  Impact:

  This bug impacts all Oneiric systems which use LightDM and are
  affected by lp870297 (Lightdm logins not being logged in wtmp).

  In Oneiric, acpi-support depends on wtmp entries to determine the
  active console with getXconsole and getXuser.  Since LightDM doesn't
  write to wtmp, this affects all systems that use acpi-support scripts
  to handle ACPI hotkey events -- including yet to be released hardware
  in the enablement/certification queue.

  Fix:

  The fix is to backport the changes made in Precise to Oneiric.  This
  includes implementing getXuser and getXconsole with ConsoleKit (ck-
  list-sessions).

  Patch:

  This change is already in acpi-support .139:

    http://launchpadlibrarian.net/95198647/acpi-
  support_0.138_0.139.diff.gz

  I've attached a debdiff that backports that change to acpi-support
  .139 in Oneiric.

  Regression Potential:

  There should be very little potential for regression.  In fact, this
  should fix machines affected by lp87029, including OEM systems.

  ------------------------

  The acpi-support scripts use 'ps' and 'who' output to determine the
  current active X display and X user (in getXconsole and getXuser).
  Currently, LightDM does not write to utmp so 'who' does not output the
  correct information breaking getXconsole and getXuser.

  ConsoleKit properly maintains the state of the console and probably
  should be used instead.

  I've attached a patch that re-implements getXconsole and getXuser by
  calling ck-list-sessions.

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