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[Launchpad Bug Tracker <1163720@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.2.0-55.85

---------------
linux (3.2.0-55.85) precise; urgency=low

  [Steve Conklin]

  * Release Tracking Bug
    - LP: #1233349

  [ Upstream Kernel Changes ]

  * kernel-doc: bugfix - multi-line macros
    - LP: #1223920
  * Revert "ARM: 7810/1: perf: Fix array out of bounds access in
    armpmu_map_hw_event()"
  * Revert "PM / Domains: Fix handling of wakeup devices during system
    resume"
    - LP: #1233387
  * inetpeer: Invalidate the inetpeer tree along with the routing cache
    - LP: #1205741
  * inetpeer: fix a race in inetpeer_gc_worker()
    - LP: #1205741
  * mm/memory-hotplug: fix lowmem count overflow when offline pages
    - LP: #1233387
  * libata: make it clear that sata_inic162x is experimental
    - LP: #1233387
  * sched: Fix the broken sched_rr_get_interval()
    - LP: #1233387
  * drm/i915: quirk no PCH_PWM_ENABLE for Dell XPS13 backlight
    - LP: #1162026, #1163720, #1233387
  * perf: Fix event group context move
    - LP: #1233387
  * perf tools: Add anonymous huge page recognition
    - LP: #1233387
  * arcnet: cleanup sizeof parameter
    - LP: #1233387
  * sysctl net: Keep tcp_syn_retries inside the boundary
    - LP: #1233387
  * sctp: fully initialize sctp_outq in sctp_outq_init
    - LP: #1233387
  * ipv6: take rtnl_lock and mark mrt6 table as freed on namespace cleanup
    - LP: #1233387
  * usbnet: do not pretend to support SG/TSO
    - LP: #1233387
  * net_sched: Fix stack info leak in cbq_dump_wrr().
    - LP: #1233387
  * af_key: more info leaks in pfkey messages
    - LP: #1233387
  * net_sched: info leak in atm_tc_dump_class()
    - LP: #1233387
  * drm/i915/lvds: ditch ->prepare special case
    - LP: #1233387
  * af_key: initialize satype in key_notify_policy_flush()
    - LP: #1233387
  * ALSA: usb-audio: skip UAC2 EFFECT_UNIT
    - LP: #1233387
  * ALSA: usb: Parse UAC2 extension unit like for UAC1
    - LP: #1233387
  * ALSA: ak4xx-adda: info leak in ak4xxx_capture_source_info()
    - LP: #1233387
  * slab: introduce kmalloc_array()
    - LP: #1233387
  * NFSv4.1: integer overflow in decode_cb_sequence_args()
    - LP: #1233387
  * jfs: fix readdir cookie incompatibility with NFSv4
    - LP: #1233387
  * vm: add no-mmu vm_iomap_memory() stub
    - LP: #1233387
  * nl80211: fix mgmt tx status and testmode reporting for netns
    - LP: #1233387
  * mac80211: fix duplicate retransmission detection
    - LP: #1233387
  * iwlwifi: dvm: don't send BT_CONFIG on devices w/o Bluetooth
    - LP: #1233387
  * iwlwifi: add DELL SKU for 5150 HMC
    - LP: #1233387
  * ath9k_htc: do some initial hardware configuration
    - LP: #1233387
  * Bluetooth: Add support for Foxconn/Hon Hai [0489:e04d]
    - LP: #1233387
  * Bluetooth: Add support for Mediatek Bluetooth device [0e8d:763f]
    - LP: #1233387
  * Bluetooth: ath3k: Add support for Fujitsu Lifebook UH5x2 [04c5:1330]
    - LP: #1233387
  * Bluetooth: ath3k: Add support for ID 0x13d3/0x3402
    - LP: #1233387
  * Bluetooth: Add support for Atheros [0cf3:3121]
    - LP: #1233387
  * Bluetooth: Add support for Atheros [0cf3:e003]
    - LP: #1233387
  * ARM: 7791/1: a.out: remove partial a.out support
    - LP: #1233387
  * x86, fpu: correct the asm constraints for fxsave, unbreak mxcsr.daz
    - LP: #1233387
  * mwifiex: Add missing endian conversion.
    - LP: #1233387
  * USB: mos7840: fix race in register handling
    - LP: #1233387
  * serial/mxs-auart: fix race condition in interrupt handler
    - LP: #1233387
  * serial/mxs-auart: increase time to wait for transmitter to become idle
    - LP: #1233387
  * ixgbe: Fix Tx Hang issue with lldpad on 82598EB
    - LP: #1233387
  * virtio: console: fix race with port unplug and open/close
    - LP: #1233387
  * virtio: console: fix race in port_fops_open() and port unplug
    - LP: #1233387
  * virtio: console: clean up port data immediately at time of unplug
    - LP: #1233387
  * virtio: console: fix raising SIGIO after port unplug
    - LP: #1233387
  * virtio: console: return -ENODEV on all read operations after unplug
    - LP: #1233387
  * rt2x00: fix stop queue
    - LP: #1233387
  * USB: serial: ftdi_sio: add more RT Systems ftdi devices
    - LP: #1233387
  * ACPI / battery: Fix parsing _BIX return value
    - LP: #1233387
  * drm/radeon/atom: initialize more atom interpretor elements to 0
    - LP: #1233387
  * cifs: extend the buffer length enought for sprintf() using
    - LP: #1233387
  * iwlwifi: dvm: fix calling ieee80211_chswitch_done() with NULL
    - LP: #1233387
  * iwl4965: set power mode early
    - LP: #1233387
  * iwl4965: reset firmware after rfkill off
    - LP: #1233387
  * megaraid_sas: megaraid_sas driver init fails in kdump kernel
    - LP: #1233387
  * tracing: Fix fields of struct trace_iterator that are zeroed by mistake
    - LP: #1233387
  * ALSA: 6fire: fix DMA issues with URB transfer_buffer usage
    - LP: #1233387
  * drm/radeon: always program the MC on startup
    - LP: #1233387
  * hwmon: (adt7470) Fix incorrect return code check
    - LP: #1233387
  * ext4: fix mount/remount error messages for incompatible mount options
    - LP: #1233387
  * zd1201: do not use stack as URB transfer_buffer
    - LP: #1233387
  * Hostap: copying wrong data prism2_ioctl_giwaplist()
    - LP: #1233387
  * ALSA: 6fire: make buffers DMA-able (pcm)
    - LP: #1233387
  * ALSA: 6fire: make buffers DMA-able (midi)
    - LP: #1233387
  * jbd2: Fix use after free after error in jbd2_journal_dirty_metadata()
    - LP: #1233387
  * USB: adutux: fix big-endian device-type reporting
    - LP: #1233387
  * USB: ti_usb_3410_5052: fix big-endian firmware handling
    - LP: #1233387
  * perf/arm: Fix armpmu_map_hw_event()
    - LP: #1233387
  * fs/proc/task_mmu.c: fix buffer overflow in add_page_map()
    - LP: #1233387
  * m68k/atari: ARAnyM - Fix NatFeat module support
    - LP: #1233387
  * m68k: Truncate base in do_div()
    - LP: #1233387
  * usb: add two quirky touchscreen
    - LP: #1233387
  * USB: mos7720: fix broken control requests
    - LP: #1233387
  * USB: keyspan: fix null-deref at disconnect and release
    - LP: #1233387
  * drm/i915: Invalidate TLBs for the rings after a reset
    - LP: #1233387
  * libata: apply behavioral quirks to sil3826 PMP
    - LP: #1233387
  * xen/events: initialize local per-cpu mask for all possible events
    - LP: #1233387
  * xen/events: mask events when changing their VCPU binding
    - LP: #1233387
  * block: Add bio_for_each_segment_all()
    - LP: #1233387
  * sg: Fix user memory corruption when SG_IO is interrupted by a signal
    - LP: #1233387
  * of: fdt: fix memory initialization for expanded DT
    - LP: #1233387
  * zfcp: fix lock imbalance by reworking request queue locking
    - LP: #1233387
  * zfcp: fix schedule-inside-lock in scsi_device list loops
    - LP: #1233387
  * nilfs2: remove double bio_put() in nilfs_end_bio_write() for
    BIO_EOPNOTSUPP error
    - LP: #1233387
  * nilfs2: fix issue with counting number of bio requests for
    BIO_EOPNOTSUPP error detection
    - LP: #1233387
  * SCSI: nsp32: use mdelay instead of large udelay constants
    - LP: #1233387
  * microblaze: Update microblaze defconfigs
    - LP: #1233387
  * sound: Fix make allmodconfig on MIPS
    - LP: #1233387
  * sound: Fix make allmodconfig on MIPS correctly
    - LP: #1233387
  * CRIS: Add _sdata to vmlinux.lds.S
    - LP: #1233387
  * alpha: makefile: don't enforce small data model for kernel builds
    - LP: #1233387
  * include <linux/prefetch.h> in drivers/parisc/iommu-helpers.h
    - LP: #1233387
  * sparc32: support atomic64_t
    - LP: #1233387
  * Hexagon: misc compile warning/error cleanup due to missing headers
    - LP: #1233387
  * iwl4965: fix rfkill set state regression
    - LP: #1233387
  * ath9k_htc: Restore skb headroom when returning skb to mac80211
    - LP: #1233387
  * powerpc: Don't Oops when accessing /proc/powerpc/lparcfg without
    hypervisor
    - LP: #1233387
  * powerpc: Work around gcc miscompilation of __pa() on 64-bit
    - LP: #1233387
  * powerpc/hvsi: Increase handshake timeout from 200ms to 400ms.
    - LP: #1233387
  * sunrpc: remove the second argument of k[un]map_atomic()
    - LP: #1233387
  * SUNRPC: Fix memory corruption issue on 32-bit highmem systems
    - LP: #1233387
  * drivers/base/memory.c: fix show_mem_removable() to handle missing
    sections
    - LP: #1233387
  * workqueue: cond_resched() after processing each work item
    - LP: #1233387
  * drm/i915: ivb: fix edp voltage swing reg val
    - LP: #1233387
  * drm/vmwgfx: Split GMR2_REMAP commands if they are to large
    - LP: #1233387
  * x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member
    - LP: #1233387
  * pci: frv architecture needs generic setup-bus infrastructure
    - LP: #1233387
  * m32r: consistently use "suffix-$(...)"
    - LP: #1233387
  * m32r: add memcpy() for CONFIG_KERNEL_GZIP=y
    - LP: #1233387
  * m32r: make memset() global for CONFIG_KERNEL_BZIP2=y
    - LP: #1233387
  * microblaze: Fix __futex_atomic_op macro register usage
    - LP: #1233387
  * sparc32: add ucmpdi2
    - LP: #1233387
  * sparc32: Add ucmpdi2.o to obj-y instead of lib-y.
    - LP: #1233387
  * ALSA: opti9xx: Fix conflicting driver object name
    - LP: #1233387
  * target: Fix trailing ASCII space usage in INQUIRY vendor+model
    - LP: #1233387
  * KVM: s390: move kvm_guest_enter,exit closer to sie
    - LP: #1233387
  * x86/xen: do not identity map UNUSABLE regions in the machine E820
    - LP: #1233387
  * Linux 3.2.51
    - LP: #1233387
 -- Luis Henriques <luis.henriques@xxxxxxxxxxxxx>   Wed, 02 Oct 2013 12:11:43 +0100

** Changed in: linux (Ubuntu Precise)
       Status: In Progress => Fix Released

** Changed in: linux (Ubuntu Precise)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1163720

Title:
  Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22

Status in The Linux Kernel:
  Incomplete
Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Precise:
  Fix Released
Status in “linux” source package in Raring:
  In Progress

Bug description:
  Since 3.8.0-16, the brightness control doesn’t work anymore.
  The popup is displayed, so the shortcut keys do work correctly, but it has no effect on the actual brightness of the screen.

  Switching back to 3.8.0-15 solves the issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-16-generic 3.8.0-16.26
  ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
  Uname: Linux 3.8.0-16-generic x86_64
  ApportVersion: 2.9.2-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  coucouf    1837 F.... pulseaudio
  Date: Wed Apr  3 08:29:58 2013
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-somerville-precise-amd64-20120703-2
  HibernationDevice: RESUME=UUID=e49e9eae-f16f-45bb-ad2c-b6da5c0c6f6d
  InstallationDate: Installed on 2013-03-23 (10 days ago)
  InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120703-15:08
  MachineType: Dell Inc. Dell System XPS L322X
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-16-generic root=UUID=3f6858e1-d8f5-44c4-b8e9-5ab8b9639ba7 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-16-generic N/A
   linux-backports-modules-3.8.0-16-generic  N/A
   linux-firmware                            1.104
  SourcePackage: linux
  UpgradeStatus: Upgraded to raring on 2013-04-02 (0 days ago)
  dmi.bios.date: 01/22/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/22/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.

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