Dell laptops' ST Microelectronics Free Fall Sensor (accelerometer) [pnp:8810] cannot be detected at all

[Po-Hsu Lin]

CID: 201201-10339 Dell Latitude E6530 [1]
CID: 201307-13941 Dell Latitude E5440 [2]

According to the information provided by Dell, these systems should have an accelerometer on the motherboard (Free-Fall sensor), but it cannot be detected at all
(cannot be found in /proc/bus/input/devices)

If using windows, it shows ACPI/SMO8810 in device manager
If you run "lspnp", you can see:
00:0c SMO8810 (unknown)

[1] http://www.dell.com/downloads/global/products/latit/dell_latitude_e6530_spec_sheet.pdf
[2] http://www.dell.com/us/business/p/latitude-e5440-laptop/pd

This issue has also been verified with 12.04.4, see bug 1310879

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-23-generic 3.5.0-23.35~precise1
ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 1635 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e30000 irq 49'
   Mixer name : 'IDT 92HD93BXX'
   Components : 'HDA:111d76df,10280535,00100203 HDA:14f12c06,14f1000f,00100000'
   Controls : 20
   Simple ctrls : 10
Date: Tue Jul 9 11:09:52 2013
HibernationDevice: RESUME=UUID=8ee31955-e727-4041-b013-ddde9c2533a6
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MachineType: Dell Inc. Latitude E6530
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:
 0 inteldrmfb
 1 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=81b802b0-1e06-43e7-8c92-b241adf7768c ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-23-generic N/A
 linux-backports-modules-3.5.0-23-generic N/A
 linux-firmware 1.79.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/19/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 07Y85M
dmi.board.vendor: Dell Inc.
dmi.board.version: X03
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd09/19/2012:svnDellInc.:pnLatitudeE6530:pvr01:rvnDellInc.:rn07Y85M:rvrX03:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E6530
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.10 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy/

[Po-Hsu Lin (cypressyew)]

Verified with v3.10-saucy kernel, the problem still exist.
Output from checkbox:
Accelerometer hardware not found
Dell Inc.
No supported module

[Po-Hsu Lin (cypressyew)]

Rephrased the description with more information

[Pali (pali)]

Hello, today I sent dell-smo8800 kernel driver (ACPI SMO8800 and SMO8810) to LKML: https://lkml.org/lkml/2014/5/3/33

[Po-Hsu Lin (cypressyew)]

Still affecting Trusty

[Joseph Salisbury (jsalisbury)]

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.

  With the recent release of this Ubuntu release, would like to confirm if this bug is still present. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the following commands in a terminal window:

    sudo apt-get update
    sudo apt-get dist-upgrade

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: bot-stop-nagging.

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

[Pali (pali)]

@Joseph Salisbury (jsalisbury): Driver which I sent to LKML was only now pulled by Linus to his tree. So it will be in 3.16 kernel. If you do not backport it back to trusty kernel, than it will never hit older (<< 3.16) kernels...

[Pali (pali)]

See also: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1330832

[Jesse Sung (wenchien)]

Kernel module works if there's an SMO8800 or SMO8810 in /sys/bus/acpi/devices/. The dell-smo8800 is already merged in kernel 3.16, so you'll need an utopic kernel to use it at least for now.

Userspace daemon can be found at
https://launchpad.net/~wenchien/+archive/ubuntu/freefall
If there's any issue with this package, please let me know, thanks.

[Pali (pali)]

Userspace daemon hdapsd starting from version 20141024 has also support
for Dell SMO88xx accelerometers. Package hdapsd version 1:20141203-1 is
already packaged in Ubuntu Vivid release. Older ubuntu versions have
older version of hdapsd which do not have SMO88xx support.

[Rehan Shakeel (rehanshakeel44)]

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