Oneiric kernel doesn't boot on Ivybridge.

[Robert Hooker]

== Oneiric SRU Justification ==

[Impact]
 This wil affect all users of Ivybridge on Oneiric when it releases.

[Justification]
 This patch fixes Ivy Bridge bringup on Oneiric after recent bios
 updates where gpu frequency scaling was enabled. It does not affect
 anything besides Ivy Bridge (covered by IS_GEN7, IS_GEN6 is sandybridge
 generation) in the code and has no way to regress other systems.
 Without this patch, i915 will fail to load like this

 [drm:init_status_page], render ring hws offset: 0x00000000
 [drm:init_ring_common] *ERROR* render ring initialization failed ctl 00000000 head 00000000 tail 00000000 start 00000000
 [drm:i915_driver_load] *ERROR* failed to init modeset

 vesafb will then load, and X will use the vesa driver with all kinds
 of corruption problems due to the partially initialized GPU. No public
 bug has been filed because it is unreleased hardware but it has been
 tested internally.

[Test Case]
 Boot to X on an Ivy Bridge system, which is not possible without this
 patch.

[Regression Potential]
 None, this only affects generation 7 GPU's which are unreleased and
 covered by IS_GEN7 in the patch. No new code is added, only the
 enabling of already existing code used for Sandy Bridge on the newer
 processors.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 888154

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Robert Hooker (sarvatt)]

This are unreleased machines and I can't attach logs.

[Brad Figg (brad-figg)]

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add a tag named: kernel-bot-stop-nagging.

 Thank you for your help, we really do appreciate it.

[Robert Hooker (sarvatt)]

This is fixed in precise.

[Herton R. Krzesinski (herton)]

This is an early application of a commit that will be coming in via upstream stable (3.0.10). As such it is not subject to the standard bug verification process.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.0.0-14.23

---------------
linux (3.0.0-14.23) oneiric-proposed; urgency=low

  [Herton R. Krzesinski]

  * Release Tracking Bug
    - LP: #893213

  [ Andy Whitcroft ]

  * debian: add locking to protect debian/files from parallel update

  [ Konrad Rzeszutek Wilk ]

  * SAUCE: x86/paravirt: Partially revert "remove lazy mode in interrupts"
    - LP: #854050

  [ Leann Ogasawara ]

  * Revert "ubuntu: fsam7400 disable driver"
    - LP: #876030

  [ Seth Forshee ]

  * [Config] Enable EVENT_POWER_TRACING_DEPRECATED=y for powertop

  [ Tim Gardner ]

  * Add postinit and postrm scripts to the extras package
    - LP: #882120
  * [Config] CONFIG_R6040=m
    - LP: #650899
  * [Config] CONFIG_MEMSTICK_R592=m
    - LP: #238208
  * [Config] CONFIG_HID_ACRUX_FF=y
    - LP: #890952

  [ Upstream Kernel Changes ]

  * Revert "NFS: Ensure that writeback_single_inode() calls write_inode()
    when syncing"
    - LP: #890952
  * sparc64: Force the execute bit in OpenFirmware's translation entries.
    - LP: #881420
  * sched/rt: Migrate equal priority tasks to available CPUs
    - LP: #881420
  * sched: Fix up wchan borkage
    - LP: #881420
  * ide-disk: Fix request requeuing
    - LP: #881420
  * posix-cpu-timers: Cure SMP wobbles
    - LP: #881420
  * lis3: fix regression of HP DriveGuard with 8bit chip
    - LP: #881420
  * ASoC: use a valid device for dev_err() in Zylonite
    - LP: #881420
  * ASoC: Fix setting update bits for WM8753_LADC and WM8753_RADC
    - LP: #881420
  * drm/radeon: Update AVIVO cursor coordinate origin before x/yorigin
    calculation.
    - LP: #881420
  * drm/radeon/kms: fix regression in DP aux defer handling
    - LP: #881420
  * drm/radeon/kms: add retry limits for native DP aux defer
    - LP: #881420
  * drm/radeon/kms: fix channel_remap setup (v2)
    - LP: #881420
  * ptp: fix L2 event message recognition
    - LP: #881420
  * x86/PCI: use host bridge _CRS info on ASUS M2V-MX SE
    - LP: #881420
  * qla2xxx: Fix crash in qla2x00_abort_all_cmds() on unload
    - LP: #881420
  * libsas: fix panic when single phy is disabled on a wide port
    - LP: #881420
  * md: Avoid waking up a thread after it has been freed.
    - LP: #881420
  * dm table: avoid crash if integrity profile changes
    - LP: #881420
  * mmc: mxs-mmc: fix clock rate setting
    - LP: #881420
  * exec: do not call request_module() twice from search_binary_handler()
    - LP: #881420
  * ARM: mach-ux500: enable fix for ARM errata 754322
    - LP: #881420
  * drm/radeon/kms: retry aux transactions if there are status flags
    - LP: #881420
  * drm/radeon/kms: use hardcoded dig encoder to transmitter mapping for
    DCE4.1
    - LP: #881420
  * ipv6: fix NULL dereference in udp6_ufo_fragment()
    - LP: #881420
  * ahci: Enable SB600 64bit DMA on Asus M3A
    - LP: #881420
  * MIPS: PM: Use struct syscore_ops instead of sysdevs for PM (v2)
    - LP: #881420
  * ftrace: Fix regression of :mod:module function enabling
    - LP: #881420
  * ftrace: Fix regression where ftrace breaks when modules are loaded
    - LP: #881420
  * ftrace: Fix warning when CONFIG_FUNCTION_TRACER is not defined
    - LP: #881420
  * ...