Ubuntu
linux-lts-trusty package

[HP Pavilion dv6] Brightness control only work on the last two steps on 12.04.5

Bug #1416940 reported by Po-Hsu Lin on 2015-02-02

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	HWE Next	Fix Released	Medium	Alex Hung
	linux-lts-trusty (Ubuntu)	Fix Released	Medium	Alex Hung

Bug Description

CID: 201209-11641 HP Pavilion dv6 Notebook PC

Brightness control does not work on this system.
The brightness level indicator would change with hotkey events, but the brightness itself would only change with the last two steps.

Debugging information:
ubuntu@201209-11641:~$ ls /sys/class/backlight
acpi_video0 acpi_video1 intel_backlight

ubuntu@201209-11641:~$ grep -r . /proc/acpi
/proc/acpi/bbswitch:0000:01:00.0 ON
/proc/acpi/battery/BAT0/alarm:alarm: unsupported
/proc/acpi/battery/BAT0/state:present: yes
/proc/acpi/battery/BAT0/state:capacity state: ok
/proc/acpi/battery/BAT0/state:charging state: charged
/proc/acpi/battery/BAT0/state:present rate: 0 mA
/proc/acpi/battery/BAT0/state:remaining capacity: 4878 mAh
/proc/acpi/battery/BAT0/state:present voltage: 12642 mV
/proc/acpi/battery/BAT0/info:present: yes
/proc/acpi/battery/BAT0/info:design capacity: 4878 mAh
/proc/acpi/battery/BAT0/info:last full capacity: 4878 mAh
/proc/acpi/battery/BAT0/info:battery technology: rechargeable
/proc/acpi/battery/BAT0/info:design voltage: 11100 mV
/proc/acpi/battery/BAT0/info:design capacity warning: 672 mAh
/proc/acpi/battery/BAT0/info:design capacity low: 456 mAh
/proc/acpi/battery/BAT0/info:cycle count: 0
/proc/acpi/battery/BAT0/info:capacity granularity 1: 216 mAh
/proc/acpi/battery/BAT0/info:capacity granularity 2: 4206 mAh
/proc/acpi/battery/BAT0/info:model number: MO06062
/proc/acpi/battery/BAT0/info:serial number: 133
/proc/acpi/battery/BAT0/info:battery type: LION
/proc/acpi/battery/BAT0/info:OEM info: 12-32
/proc/acpi/button/lid/LID0/state:state: open
/proc/acpi/ac_adapter/ADP1/state:state: on-line
/proc/acpi/wakeup:Device S-state Status Sysfs node
/proc/acpi/wakeup:P0P1 S4 *disabled
/proc/acpi/wakeup:KBD0 S3 *enabled pnp:00:07
/proc/acpi/wakeup:PS2M S3 *disabled pnp:00:08
/proc/acpi/wakeup:EHC1 S3 *enabled pci:0000:00:1d.0
/proc/acpi/wakeup:EHC2 S3 *enabled pci:0000:00:1a.0
/proc/acpi/wakeup:XHC S3 *enabled pci:0000:00:14.0
/proc/acpi/wakeup:HDEF S0 *disabled pci:0000:00:1b.0
/proc/acpi/wakeup:RP01 S4 *disabled pci:0000:00:1c.0
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:RP02 S4 *disabled
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:RP03 S4 *disabled pci:0000:00:1c.2
/proc/acpi/wakeup:PXSX S4 *disabled pci:0000:08:00.0
/proc/acpi/wakeup:RP04 S4 *disabled pci:0000:00:1c.3
/proc/acpi/wakeup:PXSX S4 *disabled pci:0000:0a:00.0
/proc/acpi/wakeup:RP05 S4 *disabled
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:RP06 S5 *disabled pci:0000:00:1c.5
/proc/acpi/wakeup:PXSX S5 *enabled pci:0000:0b:00.0
/proc/acpi/wakeup:RP07 S4 *disabled
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:RP08 S4 *disabled
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:PEG0 S4 *disabled pci:0000:00:01.0
/proc/acpi/wakeup:PEGP S4 *disabled pci:0000:01:00.0
/proc/acpi/wakeup:PEG1 S4 *disabled
/proc/acpi/wakeup:PEG2 S4 *disabled
/proc/acpi/wakeup:PEG3 S4 *disabled
/proc/acpi/wakeup:LID0 S3 *enabled

ubuntu@201209-11641:~$ dmesg | grep 'ACPI: Video'
[ 8.457421] ACPI: Video Device [PEGP] (multi-head: yes rom: yes post: no)
[ 8.708920] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
ubuntu@201209-11641:~$

WORKAROUND:
Adding acpi_osi='!Windows 2012' could make it work.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-44-generic 3.13.0-44.73~precise1
ProcVersionSignature: Ubuntu 3.13.0-44.73~precise1-generic 3.13.11-ckt12
Uname: Linux 3.13.0-44-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-44-generic.
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: 92HD91BXX Analog [92HD91BXX Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 2121 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0x74610000 irq 47'
   Mixer name : 'Intel PantherPoint HDMI'
   Components : 'HDA:111d76e0,103c181b,00100102 HDA:80862806,103c1818,00100000'
   Controls : 30
   Simple ctrls : 12
Date: Sun Feb 1 21:21:57 2015
HibernationDevice: RESUME=UUID=44133aff-4b56-4bb1-bd96-812df1f33e5c
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
MachineType: Hewlett-Packard HP Pavilion dv6 Notebook PC
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-44-generic root=UUID=a8ad3f48-e182-468f-b168-3a16c8cc9536 ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-3.13.0-44-generic N/A
linux-backports-modules-3.13.0-44-generic N/A
linux-firmware 1.79.18
RfKill:
0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/02/2012
dmi.bios.vendor: Insyde
dmi.bios.version: F.22
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 181B
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 52.24
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.22:bd11/02/2012:svnHewlett-Packard:pnHPPaviliondv6NotebookPC:pvr0791100200004710000620100:rvnHewlett-Packard:rn181B:rvr52.24:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Pavilion dv6 Notebook PC
dmi.product.version: 0791100200004710000620100
dmi.sys.vendor: Hewlett-Packard

Tags:

CVE References

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2015-02-02:

DSDT.dsl Edit (587.7 KiB, text/plain)
AcpiTables.txt Edit (477.4 KiB, text/plain; charset="utf-8")
AlsaDevices.txt Edit (490 bytes, text/plain; charset="utf-8")
AplayDevices.txt Edit (267 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (57.6 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (2.3 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (9.5 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.3.txt Edit (3.2 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (2.7 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.0 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (508 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (12.9 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (622 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (637 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.6 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.3 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.5 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (16.5 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (130.4 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (313.0 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (941.7 KiB, text/plain; charset="utf-8")

Revision history for this message

Po-Hsu Lin (cypressyew) wrote on 2015-02-02:

dmidecode.log Edit (16.2 KiB, text/plain)

Revision history for this message

Anthony Wong (anthonywong) wrote on 2015-02-03:

Alex, please check if the bios is incompatible with 3.13 wrt brightness.

Please note that either 12.04.2 or acpi_osi='!Windows 2012' are working fine.

Changed in linux-lts-trusty (Ubuntu):
assignee:	Anthony Wong (anthonywong) → Alex Hung (alexhung)
Changed in hwe-next:
assignee:	nobody → Alex Hung (alexhung)
importance:	Undecided → Medium

Alex Hung (alexhung) on 2015-03-02

Changed in hwe-next:
status:	New → In Progress
Changed in linux-lts-trusty (Ubuntu):
status:	New → In Progress

Revision history for this message

Alex Hung (alexhung) wrote on 2015-03-02:

This is related to the OS detection in _BCM control method in DSDT; however, this is a system from 2012 and it is not likely have any BIOS update from this.

There are two possible solutions -

1. add a quirk in drivers/acpi/blacklist.c such as below:

+ {
+ .callback = dmi_disable_osi_win8,
+ .ident = "HP Pavilion dv6",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6 Notebook PC"),
+ },
+ },

This is tested and it works well.

2. newer version of linux kernel enable "use_native_backlight" by default. This remove ACPI video brightness out of picture and therefore _BCM will not be used.

This is tested with mainline kernel @ http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-vivid/

Changed in hwe-next:
status:	In Progress → Incomplete
status:	Incomplete → In Progress

Anthony Wong (anthonywong) on 2015-03-02

Changed in hwe-next:
status:	In Progress → Confirmed
Changed in linux-lts-trusty (Ubuntu):
status:	In Progress → Confirmed

Revision history for this message

Alex Hung (alexhung) wrote on 2015-03-03:

0001-ACPI-blacklist-blacklist-Win8-OSI-for-HP-Pavilion-dv.patch Edit (1.2 KiB, text/plain)

A patch was submitted to workaround it. Let's see what upstream says

Ubuntu Foundations Team Bug Bot (crichton) on 2015-03-03

tags:

added: patch

Revision history for this message

Alex Hung (alexhung) wrote on 2015-03-17:

Upstream suggested not to add to blacklist but to modify drivers/acpi/video.c so the native backlight will be used instead. I will test and submit another patch.

Revision history for this message

Alex Hung (alexhung) wrote on 2015-03-17:

new version of drivers/acpi/video.c has a feature to disable native backlight, but we wanna to 1) use native backlight or 2) make _OSI(Windows 2012) disable. Either is possible with current 12.04.05:

1) use_native_backlight backport was rejected by kernel team. The only solution is to use kernel parameter acpi_video=vendor
2) patch #5 was rejected.

Luis Henriques (henrix) on 2015-03-23

Changed in linux-lts-trusty (Ubuntu):
status:	Confirmed → Fix Committed

Alex Hung (alexhung) on 2015-03-24

Changed in hwe-next:
status:	Confirmed → Fix Committed

Revision history for this message

Brad Figg (brad-figg) wrote on 2015-03-26:

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-trusty' to 'verification-done-trusty'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags:

added: verification-needed-trusty

Alex Hung (alexhung) on 2015-03-30

tags:

added: verification-done-trusty
removed: verification-needed-trusty

Revision history for this message

Launchpad Janitor (janitor) wrote on 2015-04-08:

Download full text (5.9 KiB)

This bug was fixed in the package linux-lts-trusty - 3.13.0-49.81~precise1

---------------
linux-lts-trusty (3.13.0-49.81~precise1) precise; urgency=low

[ Kamal Mostafa ]

* Release Tracking Bug
- LP: #1436132

[ Alex Hung ]

* SAUCE: ACPI / blacklist: blacklist Win8 OSI for HP Pavilion dv6
- LP: #1416940

[ Andy Whitcroft ]

* [Packaging] generate live watchdog blacklists
- LP: #1432837

[ Ben Widawsky ]

* SAUCE: i915_bdw: drm/i915/bdw: enable eDRAM.
- LP: #1430855

[ Chris J Arges ]

* [Config] Add ibmvfc to d-i
- LP: #1416001

[ Seth Forshee ]

* [Config] updateconfigs - enable X86_UP_APIC_MSI

[ Upstream Kernel Changes ]

This bug was fixed in the package linux-lts-trusty - 3.13.0-49.81~precise1

---------------
linux-lts-trusty (3.13.0-49.81~precise1) precise; urgency=low

[ Kamal Mostafa ]

* Release Tracking Bug
    - LP: #1436132

[ Alex Hung ]

* SAUCE: ACPI / blacklist: blacklist Win8 OSI for HP Pavilion dv6
    - LP: #1416940

[ Andy Whitcroft ]

* [Packaging] generate live watchdog blacklists
    - LP: #1432837

[ Ben Widawsky ]

* SAUCE: i915_bdw: drm/i915/bdw: enable eDRAM.
    - LP: #1430855

[ Chris J Arges ]

* [Config] Add ibmvfc to d-i
    - LP: #1416001

[ Seth Forshee ]

* [Config] updateconfigs - enable X86_UP_APIC_MSI

[ Upstream Kernel Changes ]

* net: add sysfs helpers for netdev_adjacent logic
    - LP: #1410852
  * net: Mark functions as static in core/dev.c
    - LP: #1410852
  * net: rename sysfs symlinks on device name change
    - LP: #1410852
  * btrfs: fix null pointer dereference in clone_fs_devices when name is
    null
    - LP: #1429804
  * cdc-acm: add sanity checks
    - LP: #1413992
  * x86: thinkpad_acpi.c: fixed spacing coding style issue
    - LP: #1417915
  * thinkpad_acpi: support new BIOS version string pattern
    - LP: #1417915
  * net: sctp: fix slab corruption from use after free on INIT collisions
    - LP: #1416506
    - CVE-2015-1421
  * ipv4: try to cache dst_entries which would cause a redirect
    - LP: #1420027
    - CVE-2015-1465
  * x86, mm/ASLR: Fix stack randomization on 64-bit systems
    - LP: #1423757
    - CVE-2015-1593
  * net: llc: use correct size for sysctl timeout entries
    - LP: #1425271
    - CVE-2015-2041
  * net: rds: use correct size for max unacked packets and bytes
    - LP: #1425274
    - CVE-2015-2042
  * Btrfs: clear compress-force when remounting with compress option
    - LP: #1434183
  * ext4: merge uninitialized extents
    - LP: #1430184
  * btrfs: filter invalid arg for btrfs resize
    - LP: #1435441
  * Bluetooth: Add firmware update for Atheros 0cf3:311f
  * Bluetooth: btusb: Add IMC Networks (Broadcom based)
  * Bluetooth: sort the list of IDs in the source code
  * Bluetooth: append new supported device to the list [0b05:17d0]
  * Bluetooth: Add support for Intel bootloader devices
  * Bluetooth: Ignore isochronous endpoints for Intel USB bootloader
  * Bluetooth: Add support for Acer [13D3:3432]
  * Bluetooth: Add support for Broadcom device of Asus Z97-DELUXE
    motherboard
  * Add a new PID/VID 0227/0930 for AR3012.
  * Bluetooth: Add support for Acer [0489:e078]
  * Bluetooth: Add USB device 04ca:3010 as Atheros AR3012
  * x86: mm: move mmap_sem unlock from mm_fault_error() to caller
  * vm: add VM_FAULT_SIGSEGV handling support
  * vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than
    SIGBUS
  * spi/pxa2xx: Clear cur_chip pointer before starting next message
  * spi: dw: Fix detecting FIFO depth
  * spi: dw-mid: fix FIFO size
  * ASoC: wm8960: Fix capture sample rate from 11250 to 11025
  * regulator: core: fix race condition in regulator_put()
  * ASoC: omap-mcbsp: Correct CBM_CFS dai format configuration
  * can: c_can: end pending transmission on network stop (ifdown)
  * nfs: fix dio deadlock when O_DIRECT flag is flipped
  * NFSv4.1: Fix an Oops in nfs41_walk_client_list
  * Input: i8042 - add noloop quirk for Medion Akoya E7225 (MD98857)
  * mac80211: properly set CCK flag in radiotap
  * nl80211: fix per-station group key get/del and memory leak
  * i2c: s3c2410: fix ABBA deadlock by keeping clock prepared
  * usb-storage/SCSI: blacklist FUA on JMicron 152d:2566 USB-SATA
    controller
  * drm/i915: Only fence tiled region of object.
  * drm/i915: Fix and clean BDW PCH identification
  * drm/i915: BDW Fix Halo PCI IDs marked as ULT.
  * ALSA: seq-dummy: remove deadlock-causing events on close
  * drivers/rtc/rtc-s5m.c: terminate s5m_rtc_id array with empty element
  * drivers: net: cpsw: discard dual emac default vlan configuration
  * can: kvaser_usb: Do not sleep in atomic context
  * can: kvaser_usb: Send correct context to URB completion
  * can: kvaser_usb: Retry the first bulk transfer on -ETIMEDOUT
  * can: kvaser_usb: Fix state handling upon BUS_ERROR events
  * quota: Switch ->get_dqblk() and ->set_dqblk() to use bytes as space
    units
  * rbd: fix rbd_dev_parent_get() when parent_overlap == 0
  * rbd: drop parent_ref in rbd_dev_unprobe() unconditionally
  * dm cache: fix missing ERR_PTR returns and handling
  * dm thin: don't allow messages to be sent to a pool target in READ_ONLY
    or FAIL mode
  * net: cls_bpf: fix size mismatch on filter preparation
  * net: cls_bpf: fix auto generation of per list handles
  * ipv6: replacing a rt6_info needs to purge possible propagated rt6_infos
    too
  * perf: Tighten (and fix) the grouping condition
  * arc: mm: Fix build failure
  * MIPS: IRQ: Fix disable_irq on CPU IRQs
  * Complete oplock break jobs before closing file handle
  * smpboot: Add missing get_online_cpus() in
    smpboot_register_percpu_thread()
  * ASoC: atmel_ssc_dai: fix start event for I2S mode
  * spi: fsl-dspi: Fix memory leak
  * spi: spi-fsl-dspi: Remove usage of devm_kzalloc
  * ALSA: ak411x: Fix stall in work callback
  * lib/checksum.c: fix carry in csum_tcpudp_nofold
  * MIPS: Fix kernel lockup or crash after CPU offline/online
  * gpio: sysfs: fix memory leak in gpiod_export_link
  * gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low
  * PCI: Add NEC variants to Stratus ftServer PCIe DMI check
  * ASoC: sgtl5000: add delay before first I2C access
  * PCI: Handle read-only BARs on AMD CS553x devices
  * mm: pagewalk: call pte_hole() for VM_PFNMAP during walk_page_range
  * nilfs2: fix deadlock of segment constructor over I_SYNC flag
  * tcp: ipv4: initialize unicast_sock sk_pacing_rate
  * caif: remove wrong dev_net_set() call
  * qlge: Fix qlge_update_hw_vlan_features to handle if interface is down
  * ip6_gre: fix endianness errors in ip6gre_err
  * spi: dw: revisit FIFO size detection again
  * Linux 3.13.11-ckt17
 -- Kamal Mostafa <kamal@canonical.com>   Wed, 25 Mar 2015 09:05:40 -0700

Changed in linux-lts-trusty (Ubuntu):
status:	Fix Committed → Fix Released

Alex Hung (alexhung) on 2015-04-09

Changed in hwe-next:
status:	Fix Committed → Fix Released

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[HP Pavilion dv6] Brightness control only work on the last two steps on 12.04.5

Bug Description

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