https://bugzilla.kernel.org/show_bug.cgi?id=100411

            Bug ID: 100411
           Summary: No Power Related Items: AC/Battery/Power Button
           Product: ACPI
           Version: 2.5
    Kernel Version: Linux NotionInk-Sonic 4.1.0-cain #1 SMP Tue Jun 23
                    23:11:38 IST 2015 x86_64 x86_64 x86_64 GNU/Linux
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Battery
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

Created attachment 180681
  --> https://bugzilla.kernel.org/attachment.cgi?id=180681&action=edit
dmesg output of 4.1 Kernel

Running on Ubuntu 15.04 with latest updates.Also compiled new 4.1 kernel with
ubuntu patches.

The system has no power information. 
No AC adapter presence 
No Battery Information 
No Power Button

The system is a Notion Ink Cain 10 inch 2 in 1 Tablet. This is a baytrail
tablet. 
The Chip is _most likely_ X-Powers AXP288 according to logs.

Relevant dmesg logs:

...
[    0.249497] ACPI: Power Resource [USBC] (on)
[    0.250919] ACPI: Power Resource [WWPR] (off)
[    0.256797] ACPI: Power Resource [PLPE] (on)
[    0.266042] ACPI: Power Resource [CLK0] (on)
[    0.266174] ACPI: Power Resource [CLK1] (on)
[    0.266465] ACPI: Power Resource [P28P] (off)
[    0.266590] ACPI: Power Resource [P18P] (off)
[    0.271556] ACPI: Power Resource [CLK0] (on)
[    0.271680] ACPI: Power Resource [CLK1] (on)
[    0.286405] ACPI: Power Resource [P28X] (off)
[    0.286538] ACPI: Power Resource [P18X] (off)
[    0.286673] ACPI: Power Resource [P28T] (off)
[    0.286803] ACPI: Power Resource [P18T] (off)
[    0.286927] ACPI: Power Resource [P1XT] (off)
[    0.296918] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[    0.296934] acpi PNP0A08:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[    0.297059] \_SB_.PCI0:_OSC invalid UUID
[    0.297064] _OSC request data:1 1e 0 
[    0.297076] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[    0.297472] acpi PNP0A08:00: fail to add MMCONFIG information, can't access
extended PCI configuration space under this bridge.
...
...
[    3.267300] axp20x i2c-INT33F4:00: AXP20x variant AXP288 found 
...
[    3.519351] axp20x i2c-INT33F4:00: AXP20X driver loaded
...
...
[    7.181783] ACPI Exception: AE_ERROR, Returned by Handler for
[GeneralPurposeIo] (20150410/evregion-297)
[    7.181798] ACPI Error: Method parse/execution failed [\_SB_.ADP1._PSR]
(Node ffff8800790bf5a0), AE_ERROR (20150410/psparse-536)
[    7.181816] ACPI Exception: AE_ERROR, Error reading AC Adapter state
(20150410/ac-132)
...
[    7.195069] ACPI: Battery Slot [BMBT] (battery present)
...
[    7.404271] i2c_designware 80860F41:03: i2c_dw_handle_tx_abort: lost
arbitration
[    7.408430] dw_dmac INTL9C60:00: DesignWare DMA Controller, 8 channels
[    7.409119] dw_dmac INTL9C60:01: DesignWare DMA Controller, 8 channels


upower output is 

Device: /org/freedesktop/UPower/devices/battery_BMBT
  native-path:          BMBT
  vendor:               Intel SR 1
  model:                SR Real Battery
  serial:               123456789
  power supply:         yes
  updated:              Wednesday 24 June 2015 06:58:51 AM IST (13 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       none
    energy:              0 Wh
    energy-empty:        0 Wh
    energy-full:         0 Wh
    energy-full-design:  0 Wh
    energy-rate:         0 W
    percentage:          100%
    capacity:            100%
    technology:          lithium-ion
    icon-name:          'battery-full-symbolic'

Device: /org/freedesktop/UPower/devices/DisplayDevice
  power supply:         yes
  updated:              Wednesday 24 June 2015 06:56:52 AM IST (132 seconds
ago)
  has history:          no
  has statistics:       no
  battery
    present:             yes
    state:               discharging
    warning-level:       none
    energy:              0 Wh
    energy-full:         0 Wh
    energy-rate:         0 W
    percentage:          100%
    icon-name:          'battery-full-symbolic'

Daemon:
  daemon-version:  0.99.2
  on-battery:      yes
  lid-is-closed:   no
  lid-is-present:  yes
  critical-action: HybridSleep

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