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[Phill <1588035@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-bug-exists-upstream kernel-bug-exists-
upstream-4.7-rc2

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https://bugs.launchpad.net/bugs/1588035

Title:
  Error initialising accelerometer DUAL250E

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I'm fairly certain that the DUAL250E is the accelerometer on the
  Lenovo Yoga 300-11/BY.

  I suspect there are two, one in the lid and one in the base, and they
  are needed to trigger auto rotate and disable the keyboard and
  touchpad in tablet mode. Without them these functions may be
  impossible.

  Note that some people reported the lid giving off key codes for
  similar Lenovo tablets but that does not appear to be the case with
  this one running my current software. Not sure if this is relevant to
  the bug but I didn't want to dismiss the idea out of hand.

  The expected functionality would of course be to perform auto-rotate
  and disable the keyboard/touchpad, but at this stage I'd settle for
  the accelerometer being usable as I understand this is not yet
  unplemented.

  I trust ubuntu-bug attached the appropriate information, but here is
  the kern.log output just in case...

  Jun  1 01:12:47 yoga kernel: [   15.706616] WARNING: CPU: 0 PID: 431 at /build/linux-FvcHlK/linux-4.4.0/fs/sysfs/dir.c:31 sysfs_warn_dup+0x62/0x80()
  Jun  1 01:12:47 yoga kernel: [   15.706618] sysfs: cannot create duplicate filename '/bus/i2c/devices/i2c-DUAL250E:00'
  Jun  1 01:12:47 yoga kernel: [   15.706621] Modules linked in: soundcore snd_soc_sst_acpi rfkill_gpio intel_smartconnect i2c_designware_platform(+) i2c_designware_core 8250_dw spi_pxa2xx_platform pwm_lpss_platform pwm_lpss mac_hid parport_pc ppdev lp parport autofs4 drbg ansi_cprng xts gf128mul algif_skcipher af_alg dm_crypt rtsx_usb_sdmmc rtsx_usb mmc_block crct10dif_pclmul crc32_pclmul cryptd i915 psmouse i2c_algo_bit r8169 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops mii drm wmi video fjes i2c_hid sdhci_acpi hid sdhci
  Jun  1 01:12:47 yoga kernel: [   15.706662] CPU: 0 PID: 431 Comm: systemd-udevd Not tainted 4.4.0-22-generic #40-Ubuntu
  Jun  1 01:12:47 yoga kernel: [   15.706664] Hardware name: LENOVO 80M0/Mini, BIOS C0CN25WW 04/21/2015
  Jun  1 01:12:47 yoga kernel: [   15.706667]  0000000000000286 000000009354a6dc ffff88003e8ef720 ffffffff813e9c53
  Jun  1 01:12:47 yoga kernel: [   15.706672]  ffff88003e8ef768 ffffffff81cd8b10 ffff88003e8ef758 ffffffff81080fb2
  Jun  1 01:12:47 yoga kernel: [   15.706675]  ffff88003eaf4000 ffff88003fb04bc0 ffff880074e66d20 ffff880074e66d20
  Jun  1 01:12:47 yoga kernel: [   15.706679] Call Trace:
  Jun  1 01:12:47 yoga kernel: [   15.706687]  [<ffffffff813e9c53>] dump_stack+0x63/0x90
  Jun  1 01:12:47 yoga kernel: [   15.706692]  [<ffffffff81080fb2>] warn_slowpath_common+0x82/0xc0
  Jun  1 01:12:47 yoga kernel: [   15.706696]  [<ffffffff8108104c>] warn_slowpath_fmt+0x5c/0x80
  Jun  1 01:12:47 yoga kernel: [   15.706699]  [<ffffffff8128ce82>] sysfs_warn_dup+0x62/0x80
  Jun  1 01:12:47 yoga kernel: [   15.706703]  [<ffffffff8128d20e>] sysfs_do_create_link_sd.isra.2+0x9e/0xb0
  Jun  1 01:12:47 yoga kernel: [   15.706707]  [<ffffffff8128d245>] sysfs_create_link+0x25/0x40
  Jun  1 01:12:47 yoga kernel: [   15.706711]  [<ffffffff8154b4fd>] bus_add_device+0x10d/0x1f0
  Jun  1 01:12:47 yoga kernel: [   15.706715]  [<ffffffff8154915e>] device_add+0x39e/0x680
  Jun  1 01:12:47 yoga kernel: [   15.706718]  [<ffffffff8154945a>] device_register+0x1a/0x20
  Jun  1 01:12:47 yoga kernel: [   15.706722]  [<ffffffff8167d1ae>] i2c_new_device+0x18e/0x230
  Jun  1 01:12:47 yoga kernel: [   15.706725]  [<ffffffff8167d7f0>] acpi_i2c_add_device+0x1a0/0x210
  Jun  1 01:12:47 yoga kernel: [   15.706730]  [<ffffffff8149ff44>] acpi_ns_walk_namespace+0xe1/0x193
  Jun  1 01:12:47 yoga kernel: [   15.706734]  [<ffffffff8167d650>] ? i2c_sysfs_new_device+0x280/0x280
  Jun  1 01:12:47 yoga kernel: [   15.706737]  [<ffffffff8167d650>] ? i2c_sysfs_new_device+0x280/0x280
  Jun  1 01:12:47 yoga kernel: [   15.706740]  [<ffffffff814a0477>] acpi_walk_namespace+0x9c/0xd0
  Jun  1 01:12:47 yoga kernel: [   15.706743]  [<ffffffff8167dba0>] i2c_register_adapter+0x340/0x480
  Jun  1 01:12:47 yoga kernel: [   15.706746]  [<ffffffff8167dd3c>] i2c_add_adapter+0x5c/0x70
  Jun  1 01:12:47 yoga kernel: [   15.706750]  [<ffffffff8167ddc8>] i2c_add_numbered_adapter+0x78/0x80
  Jun  1 01:12:47 yoga kernel: [   15.706756]  [<ffffffffc0309657>] i2c_dw_probe+0x117/0x180 [i2c_designware_core]
  Jun  1 01:12:47 yoga kernel: [   15.706762]  [<ffffffffc031b494>] dw_i2c_plat_probe+0x1d4/0x410 [i2c_designware_platform]
  Jun  1 01:12:47 yoga kernel: [   15.706766]  [<ffffffff8154e8eb>] platform_drv_probe+0x3b/0xa0
  Jun  1 01:12:47 yoga kernel: [   15.706769]  [<ffffffff8154c6e2>] driver_probe_device+0x222/0x4a0
  Jun  1 01:12:47 yoga kernel: [   15.706772]  [<ffffffff8154c9e4>] __driver_attach+0x84/0x90
  Jun  1 01:12:47 yoga kernel: [   15.706776]  [<ffffffff8154c960>] ? driver_probe_device+0x4a0/0x4a0
  Jun  1 01:12:47 yoga kernel: [   15.706779]  [<ffffffff8154a30c>] bus_for_each_dev+0x6c/0xc0
  Jun  1 01:12:47 yoga kernel: [   15.706782]  [<ffffffff8154be9e>] driver_attach+0x1e/0x20
  Jun  1 01:12:47 yoga kernel: [   15.706785]  [<ffffffff8154b9db>] bus_add_driver+0x1eb/0x280
  Jun  1 01:12:47 yoga kernel: [   15.706788]  [<ffffffffc0320000>] ? 0xffffffffc0320000
  Jun  1 01:12:47 yoga kernel: [   15.706791]  [<ffffffff8154d2f0>] driver_register+0x60/0xe0
  Jun  1 01:12:47 yoga kernel: [   15.706795]  [<ffffffff8154e826>] __platform_driver_register+0x36/0x40
  Jun  1 01:12:47 yoga kernel: [   15.706799]  [<ffffffffc0320017>] dw_i2c_init_driver+0x17/0x1000 [i2c_designware_platform]
  Jun  1 01:12:47 yoga kernel: [   15.706803]  [<ffffffff81002123>] do_one_initcall+0xb3/0x200
  Jun  1 01:12:47 yoga kernel: [   15.706807]  [<ffffffff811cee51>] ? __vunmap+0x91/0xe0
  Jun  1 01:12:47 yoga kernel: [   15.706812]  [<ffffffff811eaf83>] ? kmem_cache_alloc_trace+0x183/0x1f0
  Jun  1 01:12:47 yoga kernel: [   15.706815]  [<ffffffff811ebd7a>] ? kfree+0x13a/0x150
  Jun  1 01:12:47 yoga kernel: [   15.706820]  [<ffffffff8118c233>] do_init_module+0x5f/0x1cf
  Jun  1 01:12:47 yoga kernel: [   15.706824]  [<ffffffff81109e67>] load_module+0x1667/0x1c00
  Jun  1 01:12:47 yoga kernel: [   15.706827]  [<ffffffff81106410>] ? __symbol_put+0x60/0x60
  Jun  1 01:12:47 yoga kernel: [   15.706832]  [<ffffffff81212820>] ? kernel_read+0x50/0x80
  Jun  1 01:12:47 yoga kernel: [   15.706835]  [<ffffffff8110a644>] SYSC_finit_module+0xb4/0xe0
  Jun  1 01:12:47 yoga kernel: [   15.706839]  [<ffffffff8110a68e>] SyS_finit_module+0xe/0x10
  Jun  1 01:12:47 yoga kernel: [   15.706844]  [<ffffffff818252f2>] entry_SYSCALL_64_fastpath+0x16/0x71
  Jun  1 01:12:47 yoga kernel: [   15.706847] ---[ end trace 4e628aef655cd072 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-22-generic 4.4.0-22.40
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  phill      2671 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Jun  1 19:51:44 2016
  HibernationDevice: RESUME=UUID=77cb8394-f284-41ec-969a-74ff33be71d5
  InstallationDate: Installed on 2016-05-30 (1 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  MachineType: LENOVO 80M0
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-22-generic N/A
   linux-backports-modules-4.4.0-22-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/21/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: C0CN25WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Mini
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J33995WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo YOGA 300-11IBY
  dmi.modalias: dmi:bvnLENOVO:bvrC0CN25WW:bd04/21/2015:svnLENOVO:pn80M0:pvrLenovoYOGA300-11IBY:rvnLENOVO:rnMini:rvrSDK0J33995WIN:cvnLENOVO:ct10:cvrLenovoYOGA300-11IBY:
  dmi.product.name: 80M0
  dmi.product.version: Lenovo YOGA 300-11IBY
  dmi.sys.vendor: LENOVO

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