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[Launchpad Bug Tracker <1259237@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package nvidia-settings - 331.20-0ubuntu0.0.1

---------------
nvidia-settings (331.20-0ubuntu0.0.1) precise-proposed; urgency=low

  * debian/patches/series:
    - Do not apply 01_allow_dark_themes.dpatch.
  * debian/patches/07_remove_features_for_legacy.patch:
    - Do not expose features that are not available in the legacy
      drivers.
  * debian/patches/08_add_prime_support.patch:
    - Add support for PRIME switching. An additional
      tab provides support for switching between GPUs.
      This is only visible if nvidia-prime (>= 0.5) is
      installed and reports that the system supports
      hybrid graphics. No hard dependency on nvidia-prime
      is therefore required (LP: #1259237).
  * debian/patches/09_do_not_complain_if_nvidia_is_missing.patch:
    - Disable the warning dialog since it suggests to run
      nvidia-xconfig, which we don't need. This would also break
      PRIME.
  * debian/control.in, debian/postinst.in, debian/postrm.in,
    debian/prerm.in, debian/rules:
    - Drop alternatives and remove templates, as we only have
      one nvidia-settings for all the driver flavours.
  * debian/dirs, debian/install,
    debian/nvidia-settings-autostart.desktop,
    debian/nvidia-settings.desktop:
    - Install the icon and the desktop files.
  * debian/control:
    - Add ${misc:Depends}.
    - Build depend on libvdpau-dev and depend on libvdpau1.
    - Create transitional packages for 319, 319-updates, 313-updates,
      310, 310-updates, 304, 304-updates, experimental-304, updates.
    - Remove lpia.
    - Depend on screen-resolution-extra (>= 0.14ubuntu2.1).
  * debian/rules:
    - Pass the destdir argument in uppercase to match the variable.
    - Add download-sources target.
    - Clean action in rules to target "clean" instead of "distclean".
    - Do not compress .c and .mk files.
 -- Alberto Milone <alberto.milone@xxxxxxxxxxxxx>   Wed, 11 Dec 2013 15:23:40 +0100

** Changed in: nvidia-graphics-drivers-304-updates (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1259237

Title:
  Hybrid graphics enablement in 12.04.4

Status in “bbswitch” package in Ubuntu:
  Invalid
Status in “jockey” package in Ubuntu:
  In Progress
Status in “lightdm” package in Ubuntu:
  In Progress
Status in “nvidia-graphics-drivers-173” package in Ubuntu:
  In Progress
Status in “nvidia-graphics-drivers-304” package in Ubuntu:
  Fix Released
Status in “nvidia-graphics-drivers-304-updates” package in Ubuntu:
  Fix Released
Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  Fix Released
Status in “nvidia-graphics-drivers-331-updates” package in Ubuntu:
  Fix Released
Status in “nvidia-prime” package in Ubuntu:
  Invalid
Status in “nvidia-settings” package in Ubuntu:
  Fix Released
Status in “screen-resolution-extra” package in Ubuntu:
  Invalid
Status in “bbswitch” source package in Precise:
  Fix Released
Status in “nvidia-prime” source package in Precise:
  Fix Committed
Status in “screen-resolution-extra” source package in Precise:
  Fix Released

Bug description:
  SRU request:

  Please accept the following packages in precise-proposed.

  lightdm
  nvidia-prime
  nvidia-graphics-drivers-331
  nvidia-graphics-drivers-331-updates
  nvidia-graphics-drivers-304
  nvidia-graphics-drivers-304-updates
  nvidia-graphics-drivers-173
  nvidia-settings
  screen-resolution-extra
  bbswitch

  
  [Rationale]
  This is the result of the HWE effort to bring power management to systems with NVIDIA Optimus.

  [Impact]
  Without this work, we keep both GPUs on all the time, thus heavily impacting on battery life. Thanks to this work, it is now possible to easily disable the discrete card when raw power is not needed.

  Furthermore nvidia-prime has better hardware detection now, and won't
  try to enable hybrid graphics on desktop systems any more.

  As for the technical details:
  * bbswitch is a backport of the package that now lives in main in 14.04.
  * The actual work happened in lightdm, nvidia-331, nvidia-331-updates, nvidia-prime, screen-resolution-extra, and nvidia-settings.
  * nvidia-settings now replaces all the different nvidia-settings flavours, so as to reduce the maintainance effort. I patched the app so that it checks the driver version (at runtime) and doesn't expose features that older driver releases do not support.
  * nvidia-331 and nvidia-331-updates replace 319 and 319-updates. These are the new LTS releases by NVIDIA.
  * nvidia-304 and nvidia-304-updates recommend the new nvidia-settings, include a security update, and build against the upcoming Linux 3.11 (lts-saucy).
  * nvidia-173, in addition to being compatible with Linux 3.11 (lts-saucy), also introduces transitional packages for 173-updates, as it doesn't make sense to maintain a separate -updates flavour any more. 

  
  [Test Case]
  After installing the update, users should be able to boot the system as usual, with no regressions of any kind.

  * Systems with a single NVIDIA card: nvidia-prime will detect the
  hardware and do nothing at all on unsupported systems (such as the one
  card use case, or the desktop use case)

  * Systems with NVIDIA Optimus: nvidia-prime will preserve its previous
  behaviour by leaving both GPUs on. Users can launch nvidia-settings
  and switch to the power profile that they need.

  [Regression Potential]
  Low. The new features are enabled only if the user manually selects them.

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