Sandy Bridge DRI is non functional and should be disabled for 10.10.

[Robert Hooker]

Binary package hint: xserver-xorg-video-intel

In mesa 7.9 that is currently in maverick Sandy Bridge DRI is non functional and leading to hangs any time a GL app is started. Given that these machines may potentially be released before 11.04 is, we should disable DRI in 10.10 so a 2D desktop experience is functional and revert the change for natty where it will be supported. This can be accomplished with a patch to xserver-xorg-video-intel so i965_dri.so does not load for the Sandy Bridge pci id's.

[Robert Hooker (sarvatt)]

xserver-xorg-video-intel (2:2.12.0-1ubuntu5) maverick; urgency=low

  [ Robert Hooker ]
  * Disable DRI on Sandybridge chipsets. Support for them will not be released
    until the Q42010 Intel releases, which will not be pulled into maverick.
    Without this change, all 3D apps on these devices cause hangs.
    (LP: #639667)
  * Add 102_b43_pciid_update.patch. Fixes detection of a new b43
    chipset revision that is being shipped. Without this the drivers
    will not attempt to load even though this chipset is the same as
    the previous b43 ones. Backport of upstream commit 55b5fe8880.
    (LP: #640214)

  [ Christopher James Halse Rogers ]
  * debian/patches/101_copy-fb.patch: Move scratch pixmap creation to the
    drmmode_copy_fb function, and clean up after we've used it. Fixes the
    SIGSEGV in FreeClientResources when logging out of KDE (LP: #628077)
  * debian/patches/106_backport_vblank_on_server_regenerate_fix.patch:
    Backport fix for SwapBuffers hang after server regenerate. LP 628077
    was hiding this by crashing the server. Fixes kwin desktop effects hanging
    on second and subsequent logins.
  * Cherry-pick e30f0338 to free the Screen pixmap on close. Fixes a memory
    leak on server regeneration, and another crash on KDE log out hidden by
    LP 628077.

Date: Mon, 27 Sep 2010 14:34:27 +1000
Changed-By: Christopher James Halse Rogers <raof at ubuntu.com>
Maintainer: Ubuntu Developers <ubuntu-devel-discuss at lists.ubuntu.com>
Signed-By: Michael Vogt <michael.vogt at ubuntu.com>
https://edge.launchpad.net/ubuntu/maverick/+source/xserver-xorg-video-intel/2:2.12.0-1ubuntu5