Volume keys don't function - mapped to WMI events and requires driver support

[Colin Ian King]

Volume keys don't function, they are mapped to WMI GUID 02314822-307C-4F66-bf0E-48AEAEB26CC8. Also the _WED method does not return an integer with the scan code, instead it returns a buffer with the scancode in the 1st element in the buffer.

Two event should be bound to key presses:
  event ID: 0xc0 (key-up)
  event ID: 0xc1 (key-down).

[Colin Ian King (colin-king)]

SRU request:

Impact: Dell device is lacking volume up/down hotkeys which require
a WMI driver to handle the WMI hotkey events with the GUID
02314822-307C-4F66-bf0E-48AEAEB26CC8.

Fix: Update dell WMI driver to support GUID 02314822-307C-4F66-bf0E-48AEAEB26CC8.
and handle firmware bug in _WED method return value.

Testcase: With the driver, hotkeys work correctly. Without the driver,
hotkeys don't work.

[Martin Pitt (pitti)]

Accepted linux into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Colin Ian King (colin-king)]

@Martin, I believe this is in maverick-proposed rather than lucid. Will test tomorrow.

[Colin Ian King (colin-king)]

Verified for Maverick.

w/o the proposed kernel, keys don't work. With proposed kernel volume keys work.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.38-3.30

---------------
linux (2.6.38-3.30) natty; urgency=low

  [ Andy Whitcroft ]

  * rebase to v2.6.38-rc4
  * ppc64 -- add basic architecture
  * ubuntu: AUFS -- update to 65835da20b77c98fb538c9114fc31f5de1328230

  [ Colin Ian King ]

  * SAUCE: Add WMI hotkeys support for Dell All-In-One series
    - LP: #676997
  * SAUCE: Add WMI hotkeys support for another Dell All-In-One series
    - LP: #701530
  * SAUCE: Dell WMI: Use sparse keymaps and tidy up code.
    - LP: #701530

  [ Dan Rosenberg ]

  * SAUCE: (drop after 2.6.38) Convert net %p usage %pK

  [ Kees Cook ]

  * Revert "SAUCE: kernel: make /proc/kallsyms mode 400 to reduce ease of
    attacking"
  * SAUCE: (drop after 2.6.38) use %pK for /proc/kallsyms and /proc/modules

  [ Tim Gardner ]

  * [Config] CONFIG_BLK_CGROUP=y
    - LP: #706394
  * [Config] CONFIG_DELL_WMI_AIO=m

  [ Upstream Kernel Changes ]

  * drm/i915/lvds: Restore dithering on native modes for gen2/3
    - LP: #711568

  [ Upstream Kernel Changes ]

  * rebase from v2.6.38-rc3 to v2.6.38-rc4.
 -- Andy Whitcroft <email address hidden> Tue, 08 Feb 2011 02:07:18 +0000

[Martin Pitt (pitti)]

Accepted linux into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.35-27.48

---------------
linux (2.6.35-27.48) maverick-proposed; urgency=low

  [ Steve Conklin ]

  * Release Tracking Bug
    - LP: #723335

  [ Upstream Kernel Changes ]

  * thinkpad-acpi: avoid keymap pitfall
    - LP: #722747

linux (2.6.35-27.47) maverick-proposed; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #716532

  [ Upstream Kernel Changes ]

  * Revert "USB: gadget: Allow function access to device ID data during
    bind()"
    - LP: #714732
  * net: fix rds_iovec page count overflow, CVE-2010-3865
    - LP: #709153
    - CVE-2010-3865
  * Input: fix typo in keycode validation supporting large scancodes
    - LP: #658198
  * net: ax25: fix information leak to userland, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: ax25: fix information leak to userland harder, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: packet: fix information leak to userland, CVE-2010-3876
    - LP: #710714
    - CVE-2010-3876
  * net: tipc: fix information leak to userland, CVE-2010-3877
    - LP: #711291
    - CVE-2010-3877
  * posix-cpu-timers: workaround to suppress the problems with mt exec,
    CVE-2010-4248
    - LP: #712609
    - CVE-2010-4248
  * sys_semctl: fix kernel stack leakage, CVE-2010-4083
    - LP: #712749
    - CVE-2010-4083
  * thinkpad-acpi: lock down size of hotkey keymap
    - LP: #712174
  * thinkpad-acpi: add support for model-specific keymaps
    - LP: #712174
  * thinkpad-acpi: Add KEY_CAMERA (Fn-F6) for Lenovo keyboards
    - LP: #712174
  * x86, hotplug: Use mwait to offline a processor, fix the legacy case
    - LP: #714732
  * fuse: verify ioctl retries
    - LP: #714732
  * fuse: fix ioctl when server is 32bit
    - LP: #714732
  * ALSA: hda: Use position_fix=1 for Acer Aspire 5538 to enable capture on
    internal mic
    - LP: #685161, #714732
  * ALSA: hda: Use model=lg quirk for LG P1 Express to enable playback and
    capture
    - LP: #595482, #714732
  * drm/radeon/kms: don't apply 7xx HDP flush workaround on AGP
    - LP: #714732
  * drm/kms: remove spaces from connector names (v2)
    - LP: #714732
  * drm/radeon/kms: fix vram base calculation on rs780/rs880
    - LP: #714732
  * nohz: Fix printk_needs_cpu() return value on offline cpus
    - LP: #714732
  * nohz: Fix get_next_timer_interrupt() vs cpu hotplug
    - LP: #714732
  * nfsd: Fix possible BUG_ON firing in set_change_info
    - LP: #714732
  * NFS: Fix fcntl F_GETLK not reporting some conflicts
    - LP: #714732
  * sunrpc: prevent use-after-free on clearing XPT_BUSY
    - LP: #714732
  * hwmon: (adm1026) Allow 1 as a valid divider value
    - LP: #714732
  * hwmon: (adm1026) Fix setting fan_div
    - LP: #714732
  * EDAC: Fix workqueue-related crashes
    - LP: #714732
  * amd64_edac: Fix interleaving check
    - LP: #714732
  * ASoC: Fix swap of left and right channels for WM8993/4 speaker boost
    gain
    - LP: #714732
  * ASoC: Fix off by one error in WM8994 EQ register bank size
    - LP: #714732
  * ASoC: WM8580: Fix R8 initial value
    - LP: #714732
  * ASoC: fix deemphasis control in wm8904/55/60 codecs
    - LP: #714732
  * bootmem: Add alloc_bootmem_...