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[Launchpad Bug Tracker <1274987@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.13.0-16.36

---------------
linux (3.13.0-16.36) trusty; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1287903

  [ Andy Whitcroft ]

  * Revert "[Config] lowlatency -- turn CONFIG_IRQ_FORCED_THREADING_DEFAULT
    off temporarily"

  [ Chris Bainbridge ]

  * SAUCE: x86: set Pentium M as PAE capable
    - LP: #930447

  [ Dave Jones ]

  * SAUCE: taint: repurpose TAINT_UNSAFE_SMP to TAINT_CPU_OUT_OF_SPEC
    - LP: #930447

  [ Paolo Pisati ]

  * [Config] SND_DAVINCI_SOC && SND_AM33XX_SOC_EVM =m
  * [Config] armhf: DRM_TILCDC=m

  [ Philippe Bergheaud ]

  * SAUCE: powerpc: fix xmon disassembler for little-endian
    - LP: #1286255

  [ Tim Gardner ]

  * [Config] CONFIG_MICROCODE_EARLY=y
  * [Config] CONFIG_R8821AE=m
  * [Config] Add some virtio drivers to -virtual
    - LP: #1287401
  * [Config] inclusion-list: vesafb and virtio_balloon are built-in
  * SAUCE: vmwgfx: Expose U32_MAX

  [ Upstream Kernel Changes ]

  * Revert "drm/vmwgfx: Fix regression caused by "drm/ttm: make ttm
    reservation calls behave like reservation calls""
  * Revert "drm/vmwgfx: Fix the driver for large dma addresses"
  * usb: ehci: fix deadlock when threadirqs option is used
    - LP: #1274987, #1279081
  * Staging: rtl8812ae: Add Realtek 8821 PCI WIFI driver
    - LP: #1287298
  * intel_pstate: Remove periodic P state boost
  * intel_pstate: Add trace point to report internal state.
  * intel_pstate: Take core C0 time into account for core busy calculation
  * intel_pstate: Use LFM bus ratio as min ratio/P state
  * intel_pstate: Add support for Baytrail turbo P states
  * intel_pstate: Change busy calculation to use fixed point math.
  * PM / hibernate: Fix restore hang in freeze_processes()
  * ipmi: remove deprecated IRQF_DISABLED
  * ipmi: use USEC_PER_SEC instead of 1000000 for more meaningful
  * ipmi: fix timeout calculation when bmc is disconnected
  * ipmi: Cleanup error return
  * ipmi: Add missing rv in ipmi_parisc_probe()
  * drm/ttm: ttm object security fixes for render nodes
  * drivers: gpu: Mark functions as static in vmwgfx_kms.c
  * drivers: gpu: Mark functions as static in vmwgfx_buffer.c
  * drivers: gpu: Mark functions as static in vmwgfx_fence.c
  * drm/vmwgfx: Fix the driver for large dma addresses
  * drm/vmwgfx: Update the svga3d register header file for new device
    version
  * drm/vmwgfx: Update the driver user-space interface for guest-backed
    objects
  * drm/vmwgfx: Replace vram_size with prim_bb_mem for calculation of max
    resolution
  * drm/vmwgfx: Update the svga register definition
  * drm/vmwgfx: Adapt capability reporting to new hardware version
  * drm/vmwgfx: Add MOB management
  * drm/vmwgfx: Hook up MOBs to TTM as a separate memory type
  * drm/vmwgfx: Read bounding box memory from the appropriate register
  * drm/vmwgfx: Add the possibility to validate a buffer as a MOB
  * drm/vmwgfx: Hook up guest-backed queries
  * drm/vmwgfx: Detach backing store from its resources when it is evicted
  * drm/vmwgfx: Hook up guest-backed contexts
  * drm/vmwgfx: Hook up guest-backed surfaces
  * drm/vmwgfx: Add guest-backed shaders
  * drm/vmwgfx: Validate guest-backed shader const commands
  * drm/vmwgfx: Add new unused (by user-space) commands to the verifier
  * drm/vmwgfx: Enable 3D for new hardware version
  * drm/vmwgfx: Fix up the vmwgfx_drv.h header for new files
  * drm/vmwgfx: Extend the command verifier to handle guest-backed on / off
  * drm/vmwgfx: Make sure that the multisampling is off
  * drm/vmwgfx: Implement a buffer object synccpu ioctl.
  * drm/vmwgfx: Add a parameter to get max MOB memory size
  * drm/vmwgfx: Block the BIND_SHADERCONSTS command
  * drm/vmwgfx: Track context bindings and scrub them upon exiting execbuf
  * drm/vmwgfx: Persistent tracking of context bindings
  * drm/vmwgfx: Ditch the vmw_dummy_query_bo_prepare function
  * drm/vmwgfx: Use the linux DMA api also for MOBs
  * drm/vmwgfx: Update otable definitions
  * drm/vmwgfx: Fix surface framebuffer check for guest-backed surfaces
  * drm/vmwgfx: Implement 64-bit Otable- and MOB binding v2
  * drm/vmwgfx: Silence the device command verifier
  * drm/vmwgfx: Invalidate surface on non-readback unbind
  * drm/vmwgfx: Fix recently introduced sparse / smatch warnings and errors
  * drm/vmwgfx: Don't commit staged bindings if execbuf fails
  * drm/vmwgfx: Fix regression caused by "drm/ttm: make ttm reservation
    calls behave like reservation calls"
  * drm/vmwgfx: Fix SET_SHADER_CONST emulation on guest-backed devices
  * drm/vmwgfx: Fix legacy surface reference size copyback
  * drm/vmwgfx: Emulate legacy shaders on guest-backed devices v2
  * drm/vmwgfx: Detect old user-space drivers and set up legacy emulation
    v2
  * drm/vmwgfx: Reemit context bindings when necessary v2
  * vmwgfx: Fix unitialized stack read in vmw_setup_otable_base
  * drm/vmwgfx: Fix a couple of sparse warnings and errors
  * drm/vmwgfx: Get maximum mob size from register SVGA_REG_MOB_MAX_SIZE
  * drm/vmwgfx: unlock on error path in vmw_execbuf_process()
  * drm/vmwgfx: Remove stray const
  * drm/vmwgfx: Fix possible integer overflow
  * drm/vmwgfx: Fix command defines and checks
  * drm/vmwgfx: Remove some unused surface formats
  * drm/vmwgfx: Make sure backing mobs are cleared when allocated. Update
    driver date.
  * drm/vmwgfx: avoid null pointer dereference at failure paths
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Mon, 03 Mar 2014 13:04:10 -0700

** Changed in: linux (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1274987

Title:
  can't boot with new lowlatency kernel

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
  Fix Released

Bug description:
  with the new 3.13.0-6-lowlatency i cant boot. it choose and shows up plymouth (or some text, if i disable plymout)
  next the computer hungs up completely. no SysRq. only a hard turn off.
  the same generic kernel works without problems

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-6-lowlatency 3.13.0-6.23
  ProcVersionSignature: Ubuntu 3.13.0-6.23-generic 3.13.0
  Uname: Linux 3.13.0-6-generic x86_64
  ApportVersion: 2.13.2-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  fabi       2400 F.... pulseaudio
   /dev/snd/controlC1:  fabi       2400 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Fri Jan 31 16:59:44 2014
  HibernationDevice: RESUME=UUID=1db62c66-60db-4cfe-bde9-72d501cc14cc
  InstallationDate: Installed on 2013-12-12 (50 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: Dell Inc. OptiPlex 760
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-6-generic root=UUID=5293cdc9-6817-4800-8809-b1d291d3a7e0 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-6-generic N/A
   linux-backports-modules-3.13.0-6-generic  N/A
   linux-firmware                            1.123
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/21/2012
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A15
  dmi.board.name: 0F373D
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA15:bd08/21/2012:svnDellInc.:pnOptiPlex760:pvr:rvnDellInc.:rn0F373D:rvrA00:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex 760
  dmi.sys.vendor: Dell Inc.

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