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[Bug 1393160] Re: Backlight control not working; but entries in /sys/class/backlight.. Vendor: American Megatrends Inc.. Version: 5.6.5

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Mon, 17 Nov 2014 18:08:31 -0000
Reply-to: Bug 1393160 <1393160@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.18 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/v3.18-rc5-vivid/

** Changed in: linux (Ubuntu)
Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1393160

Title:
Backlight control not working; but entries in /sys/class/backlight..
Vendor: American Megatrends Inc.. Version: 5.6.5

Status in “linux” package in Ubuntu:
Incomplete

Bug description:
Hi there,

First of all sorry for my broken english.

Backlight control does not work on my LDLC Mercure MA1-4-HS5 Slim (Vendor: American Megatrends Inc. Version: 5.6.5) with Ubuntu 14.04.1 LTS (Release 14.04).
I tried to fix this with Xbacklight but it does not work either.

Here are a few information I can give, I hope it will be useful...

Thank you for your time !

[code]# dmidecode 2.12
SMBIOS 2.8 present.
40 structures occupying 1810 bytes.
Table at 0x000EBD30.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: American Megatrends Inc.
Version: 5.6.5
Release Date: 06/09/2014
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 1024 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Targeted content distribution is supported
UEFI is supported
BIOS Revision: 5.6

Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Notebook
Product Name: W51XTU
Version: Not Applicable
Serial Number: Not Applicable
UUID: 065BFA80-9E9E-0000-0000-000000000000
Wake-up Type: Power Switch
SKU Number: To be filled by O.E.M.
Family: To be filled by O.E.M.

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: Notebook
Product Name: W51XTU
Version: V1.0
Serial Number: Not Applicable
Asset Tag: Tag 12345
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: To be filled by O.E.M.
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0

Handle 0x0003, DMI type 3, 25 bytes
Chassis Information
Manufacturer: To Be Filled By O.E.M.
Type: Desktop
Lock: Not Present
Version: To Be Filled By O.E.M.
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 1
<OUT OF SPEC> (0)
SKU Number: To be filled by O.E.M.

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: PS2Mouse
External Connector Type: PS/2
Port Type: Mouse Port

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1A1
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: PS/2
Port Type: Keyboard Port

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A1
Internal Connector Type: None
External Reference Designator: TV Out
External Connector Type: Mini Centronics Type-14
Port Type: Other

Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2A
Internal Connector Type: None
External Reference Designator: COM A
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible

Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2A2B
Internal Connector Type: None
External Reference Designator: Video
External Connector Type: DB-15 female
Port Type: Video Port

Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: USB1
External Connector Type: Access Bus (USB)
Port Type: USB

Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: USB2
External Connector Type: Access Bus (USB)
Port Type: USB

Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3A1
Internal Connector Type: None
External Reference Designator: USB3
External Connector Type: Access Bus (USB)
Port Type: USB

Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: LAN
External Connector Type: RJ-45
Port Type: Network Port

Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J5A1
Internal Connector Type: None
External Reference Designator: USB4
External Connector Type: Access Bus (USB)
Port Type: USB

Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9A1 - TPM HDR
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9C1 - PCIE DOCKING CONN
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J2B3 - CPU FAN
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J6C2 - EXT HDMI
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J3C1 - GMCH FAN
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J1D1 - ITP
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0018, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: J9E2 - MDC INTPSR
Internal Connector Type: Other
External Reference Designator: Not Specified
External Connector Type: None
Port Type: Other

Handle 0x0019, DMI type 9, 17 bytes
System Slot Information
Designation: J6B2
Type: x16 PCI Express
Current Usage: In Use
Length: Long
ID: 0
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:01.0

Handle 0x001A, DMI type 9, 17 bytes
System Slot Information
Designation: J6B1
Type: x1 PCI Express
Current Usage: In Use
Length: Short
ID: 1
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:1c.3

Handle 0x001B, DMI type 10, 10 bytes
On Board Device 1 Information
Type: Video
Status: Enabled
Description: To Be Filled By O.E.M.
On Board Device 2 Information
Type: Ethernet
Status: Enabled
Description: To Be Filled By O.E.M.
On Board Device 3 Information
Type: Other
Status: Enabled
Description: Onboard 1394

Handle 0x001C, DMI type 11, 5 bytes
OEM Strings
String 1: 1558
String 2: OEM String
String 3: To Be Filled By O.E.M.
String 4: To Be Filled By O.E.M.
String 5: BIOS:1.03.04

Handle 0x001D, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 2

Handle 0x001E, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Array Handle: 0x001D
Partition Width: 2

Handle 0x001F, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x001D
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM0
Bank Locator: A1_BANK0
Type: DDR3
Type Detail: Unknown
Speed: 1333 MHz
Manufacturer: Undefined
Serial Number: 27020000
Asset Tag: A1_AssetTagNum0
Part Number: CT51264BF160BJ.C8F
Rank: 1
Configured Clock Speed: 1333 MHz
Minimum voltage: 13.080 V
Maximum voltage: -18.348 V
Configured voltage: Unknown

Handle 0x0020, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FFFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x001F
Memory Array Mapped Address Handle: 0x001E
Partition Row Position: Unknown
Interleave Position: 1
Interleaved Data Depth: 2

Handle 0x0021, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x001D
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: A1_DIMM1
Bank Locator: A1_BANK1
Type: Unknown
Type Detail: Unknown
Speed: Unknown
Manufacturer: A1_Manufacturer1
Serial Number: A1_SerNum1
Asset Tag: A1_AssetTagNum1
Part Number: Array1_PartNumber1
Rank: Unknown
Configured Clock Speed: Unknown
Minimum voltage: -17.967 V
Maximum voltage: Unknown
Configured voltage: Unknown

Handle 0x0022, DMI type 126, 35 bytes
Inactive

Handle 0x0023, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected

Handle 0x0024, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard IGD
Type: Video
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:02.0

Handle 0x0025, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard LAN
Type: Ethernet
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:19.0

Handle 0x0026, DMI type 7, 19 bytes
Cache Information
Socket Designation: CPU Internal L1
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 112 kB
Maximum Size: 112 kB
Supported SRAM Types:
Unknown
Installed SRAM Type: Unknown
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Other
Associativity: Other

Handle 0x0027, DMI type 7, 19 bytes
Cache Information
Socket Designation: CPU Internal L2
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 1024 kB
Maximum Size: 1024 kB
Supported SRAM Types:
Unknown
Installed SRAM Type: Unknown
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 16-way Set-associative

Handle 0x0028, DMI type 4, 42 bytes
Processor Information
Socket Designation: SOCKET 0
Type: Central Processor
Family: Celeron
Manufacturer: Intel
ID: 78 06 03 00 FF FB EB BF
Signature: Type 0, Family 6, Model 55, Stepping 8
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Celeron(R) CPU N2830 @ 2.16GHz
Voltage: 1.2 V
External Clock: 83 MHz
Max Speed: 2400 MHz
Current Speed: 2160 MHz
Status: Populated, Enabled
Upgrade: Socket BGA1155
L1 Cache Handle: 0x0026
L2 Cache Handle: 0x0027
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Fill By OEM
Part Number: Fill By OEM
Core Count: 2
Core Enabled: 2
Thread Count: 2
Characteristics:
64-bit capable

Handle 0x0029, DMI type 136, 6 bytes
OEM-specific Type
Header and Data:
88 06 29 00 00 00

Handle 0x002A, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 1
en|US|iso8859-1
Currently Installed Language: en|US|iso8859-1

Handle 0x002B, DMI type 127, 4 bytes
End Of Table
[/code]

[code]martin@martin-W51XTU:~$ cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"[/code]

[code]martin@martin-W51XTU:~$ ls /sys/class/backlight
acpi_video0 intel_backlight [/code]

[code]martin@martin-W51XTU:~$ grep -r . /proc/acpi
/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: discharging
/proc/acpi/battery/BAT0/state:present rate: unknown
/proc/acpi/battery/BAT0/state:remaining capacity: 2316 mAh
/proc/acpi/battery/BAT0/state:present voltage: 12150 mV
/proc/acpi/battery/BAT0/info:present: yes
/proc/acpi/battery/BAT0/info:design capacity: 2800 mAh
/proc/acpi/battery/BAT0/info:last full capacity: 2644 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: 280 mAh
/proc/acpi/battery/BAT0/info:design capacity low: 0 mAh
/proc/acpi/battery/BAT0/info:cycle count: 0
/proc/acpi/battery/BAT0/info:capacity granularity 1: 64 mAh
/proc/acpi/battery/BAT0/info:capacity granularity 2: 64 mAh
/proc/acpi/battery/BAT0/info:model number: BAT
/proc/acpi/battery/BAT0/info:serial number: 0001
/proc/acpi/battery/BAT0/info:battery type: LION
/proc/acpi/battery/BAT0/info:OEM info: Notebook
/proc/acpi/button/lid/LID0/state:state: open
/proc/acpi/wakeup:Device S-state Status Sysfs node
/proc/acpi/wakeup:XHC1 S4 *enabled pci:0000:00:14.0
/proc/acpi/wakeup:PXSX S4 *disabled pci:0000:01:00.0
/proc/acpi/wakeup:RLAN S4 *disabled pci:0000:01:00.2
/proc/acpi/wakeup:PXSX S4 *disabled pci:0000:02:00.0
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:PWRB S3 *enabled
/proc/acpi/wakeup:SLPB S3 *enabled
/proc/acpi/wakeup:LID0 S3 *enabled [/code]

[code]martin@martin-W51XTU:~$ sudo acpidump -o
Option requires an argument: -o
Usage: acpidump [options]
Options:
-b Dump tables to binary files
-c Dump customized tables
-h -? This help message
-o <File> Redirect output to file
-r <Address> Dump tables from specified RSDP
-s Print table summaries only
-v Display version information
-z Verbose mode

Table Options:
-a <Address> Get table via a physical address
-f <BinaryFile> Get table via a binary file
-n <Signature> Get table via a name/signature

Invocation without parameters dumps all available tables
Multiple mixed instances of -a, -f, and -n are supported[/code]

[code]martin@martin-W51XTU:~$ acpixtract acpidump.txt

Intel ACPI Component Architecture
ACPI Binary Table Extraction Utility version 20140214-64 [Mar 29 2014]
Copyright (c) 2000 - 2014 Intel Corporation

Could not open file acpidump.txt[/code]

[code]martin@martin-W51XTU:~$ fwts
Running 42 tests, results appended to results.log
Test: Gather kernel system information.
Gather kernel signature. 1 info only
Gather kernel system information. 1 info only
Gather kernel boot command line. 1 info only
Gather ACPI driver version. 1 info only
Test: Gather BIOS DMI information.
Gather BIOS DMI information 1 info only
Test: Scan kernel log for Oopses.
Kernel log oops check. 2 passed
Test: Scan kernel log for errors and warnings.
Kernel log error check. 2 failed
Test: MTRR tests.
Test aborted.
Test: General ACPI information test.
Determine Kernel ACPI version. 1 info only
Determine machine's ACPI version.
Determine AML compiler. 1 info only
Test: UEFI secure boot test.
Test aborted.
Test: UEFI Compatibility Support Module test.
Test aborted.
Test: Test firmware has set PCI Express MaxReadReq to a higher value on n..
Test aborted.
Test: Test PCI host bridge configuration using _CRS.
Test aborted.
Test: PCIe ASPM test.
Test aborted.
Test: HPET configuration tests.
Test aborted.
Test: DMI/SMBIOS table tests.
Test aborted.
Test: Test if system is using latest microcode.
Test aborted.
Test: MSR register tests.
Test aborted.
Test: Test if CPU NX is disabled by the BIOS.
Test aborted.
Test: CPU frequency scaling tests.
Test aborted.
Test: Test max CPU frequencies against max scaling frequency.
Maximum CPU frequency test. 1 passed
Test: CPU Virtualisation Configuration test.
Test aborted.
Test: BIOS Support Installation structure test.
Test aborted.
Test: PCI IRQ Routing Table test.
Test aborted.
Test: OS/2 memory hole test.
Test the OS/2 15Mb memory hole is absent. 1 passed
Test: MultiProcessor Tables tests.
Test aborted.
Test: HDA Audio Pin Configuration test.
HDA Audio Pin Configuration test. 2 passed
Test: Test EBDA region is mapped and reserved in memory map table.
Test aborted.
Test: BIOS32 Service Directory test.
Test aborted.
Test: APIC edge/level test.
Legacy and PCI Interrupt Edge/Level trigger tests. 1 failed
Test: Extract and analyse Windows Management Instrumentation (WMI).
Test aborted..
Test: ACPI Wakealarm tests.
Test aborted.
Test: Re-assemble DSDT and find syntax errors and warnings.
Disassemble and reassemble DSDT
Disassemble and reassemble SSDT
Test: Processor Clocking Control (PCC) test.
Test aborted..
Test: Disassemble DSDT to check for _OSI("Linux").
Disassemble DSDT to check for _OSI("Linux"). 1 aborted
Test: ACPI DSDT Method Semantic tests.
Test aborted..
Test: MCFG PCI Express* memory mapped config space test.
Test aborted.
Test: Simple fan tests.
Test fan status. 3 passed
Load system, check CPU fan status.
Test: FADT SCI_EN enabled tests.
Test aborted.
Test: DMA Remapping (VT-d) test.
DMA Remapping test. 1 skipped
Test: Processor C state support test.
martin@martin-W51XTU:~$ (CPU 2 of 2) : 89.3% [/code]

[code]martin@martin-W51XTU:~$ sudo fwts method
Running 1 tests, results appended to results.log
Test: ACPI DSDT Method Semantic tests.
Test Method Names. 1 passed
Test _AEI. 1 passed
Test _PIC (Inform AML of Interrupt Model). 3 passed
Test _CID (Compatible ID). 7 passed
Test _DDN (DOS Device Name). 7 passed
Test _HID (Hardware ID). 33 passed
Test _HRV (Hardware Revision Number). 1 skipped
Test _PLD (Physical Device Location). 18 passed
Test _SUB (Subsystem ID). 2 passed
Test _SUN (Slot User Number). 1 skipped
Test _STR (String). 2 failed
Test _UID (Unique ID). 23 passed
Test _CDM (Clock Domain). 1 skipped
Test _CRS (Current Resource Settings). 27 passed
Test _DIS (Disable). 13 passed
Test _DMA (Direct Memory Access). 1 skipped
Test _FIX (Fixed Register Resource Provider). 1 skipped
Test _GSB (Global System Interrupt Base). 1 skipped
Test _HPP (Hot Plug Parameters). 1 skipped
Test _PRS (Possible Resource Settings). 12 passed
Test _PXM (Proximity). 1 skipped
Test _EDL (Eject Device List). 1 skipped
Test _EJD (Ejection Dependent Device). 1 skipped
Test _EJ0 (Eject). 1 skipped
Test _EJ1 (Eject). 1 skipped
Test _EJ2 (Eject). 1 skipped
Test _EJ3 (Eject). 1 skipped
Test _EJ4 (Eject). 1 skipped
Test _LCK (Lock). 1 skipped
Test _RMV (Remove). 5 passed
Test _STA (Status). 32 passed
Test _BDN (BIOS Dock Name). 1 skipped
Test _BBN (Base Bus Number). 1 passed
Test _DCK (Dock). 1 skipped
Test _INI (Initialize). 4 passed
Test _SEG (Segment). 1 skipped
Test _OFF (Set resource off). 3 passed
Test _ON (Set resource on). 1 skipped
Test _DSW (Device Sleep Wake). 6 passed
Test _IRC (In Rush Current). 1 skipped
Test _PRE (Power Resources for Enumeration). 1 skipped
Test _PR0 (Power Resources for D0). 2 passed
Test _PR1 (Power Resources for D1). 1 skipped
Test _PR2 (Power Resources for D2). 1 skipped
Test _PR3 (Power Resources for D3). 2 passed
Test _PS0 (Power State 0). 10 passed
Test _PS1 (Power State 1). 1 skipped
Test _PS2 (Power State 2). 1 skipped
Test _PS3 (Power State 3). 10 passed
Test _PSC (Power State Current). 1 skipped
Test _PSE (Power State for Enumeration). 1 skipped
Test _PSW (Power State Wake). 7 passed
Test _S1D (S1 Device State). 1 skipped
Test _S2D (S2 Device State). 1 skipped
Test _S3D (S3 Device State). 8 passed
Test _S4D (S4 Device State). 8 passed
Test _S0W (S0 Device Wake State). 1 skipped
Test _S1W (S1 Device Wake State). 1 skipped
Test _S2W (S2 Device Wake State). 1 skipped
Test _S3W (S3 Device Wake State). 7 passed
Test _S4W (S4 Device Wake State). 7 passed
Test _S0_ (S0 System State). 1 passed
Test _S1_ (S1 System State). 1 skipped
Test _S2_ (S2 System State). 1 skipped
Test _S3_ (S3 System State). 1 passed
Test _S4_ (S4 System State). 1 passed
Test _S5_ (S5 System State). 1 passed
Test _SWS (System Wake Source). 1 skipped
Test _PSS (Performance Supported States). 1 skipped
Test _CPC (Continuous Performance Control). 1 skipped
Test _CSD (C State Dependencies). 1 skipped
Test _CST (C States). 1 skipped
Test _PCT (Performance Control). 1 skipped
Test _PDL (P-State Depth Limit). 1 skipped
Test _PPC (Performance Present Capabilities). 1 skipped
Test _PPE (Polling for Platform Error). 1 skipped
Test _TDL (T-State Depth Limit). 1 passed
Test _TPC (Throttling Present Capabilities). 4 passed
Test _TSD (Throttling State Dependencies). 4 passed
Test _TSS (Throttling Supported States). 4 passed
Test _MSG (Message). 1 skipped
Test _ALC (Ambient Light Colour Chromaticity). 1 skipped
Test _ALI (Ambient Light Illuminance). 1 skipped
Test _ALT (Ambient Light Temperature). 1 skipped
Test _ALP (Ambient Light Polling). 1 skipped
Test _LID (Lid Status). 1 passed
Test _UPD (User Presence Detect). 1 skipped
Test _UPP (User Presence Polling). 1 skipped
Test _GCP (Get Capabilities). 1 skipped
Test _GRT (Get Real Time). 1 skipped
Test _GWS (Get Wake Status). 1 skipped
Test _STP (Set Expired Timer Wake Policy). 1 skipped
Test _STV (Set Timer Value). 1 skipped
Test _TIP (Expired Timer Wake Policy). 1 skipped
Test _TIV (Timer Values). 1 skipped
Test _SBS (Smart Battery Subsystem). 1 skipped
Test _BCT (Battery Charge Time). 1 skipped
Test _BIF (Battery Information). 1 passed
Test _BIX (Battery Information Extended). 1 skipped
Test _BMA (Battery Measurement Averaging). 1 skipped
Test _BMC (Battery Maintenance Control). 1 skipped
Test _BMD (Battery Maintenance Data). 1 skipped
Test _BMS (Battery Measurement Sampling Time). 1 skipped
Test _BST (Battery Status). 1 passed
Test _BTP (Battery Trip Point). 1 skipped
Test _BTM (Battery Time). 1 skipped
Test _PCL (Power Consumer List).
Test _PIF (Power Source Information). 1 skipped
Test _PSR (Power Source). 1 passed
Test _GAI (Get Averaging Level). 1 skipped
Test _PMM (Power Meter Measurement). 1 skipped
Test _FIF (Fan Information). 1 skipped
Test _FSL (Fan Set Level). 1 skipped
Test _FST (Fan Status). 1 skipped
Test _ACx (Active Cooling). 10 skipped
Test _CRT (Critical Trip Point). 1 passed
Test _DTI (Device Temperature Indication). 1 skipped
Test _HOT (Hot Temperature). 1 skipped
Test _NTT (Notification Temp Threshold). 1 skipped
Test _PSV (Passive Temp). 1 skipped
Test _RTV (Relative Temp Values). 1 skipped
Test _SCP (Set Cooling Policy). 1 skipped
Test _TC1 (Thermal Constant 1). 1 skipped
Test _TC2 (Thermal Constant 2). 1 skipped
Test _TMP (Thermal Zone Current Temp). 1 passed
Test _TPT (Trip Point Temperature). 1 skipped
Test _TSP (Thermal Sampling Period). 1 skipped
Test _TST (Temperature Sensor Threshold). 1 skipped
Test _TZP (Thermal Zone Polling). 1 skipped
Test _PTS (Prepare to Sleep). 5 passed
Test _TTS (Transition to State). 1 skipped
Test _S0 (System S0 State). 1 skipped
Test _S1 (System S1 State). 1 skipped
Test _S2 (System S2 State). 1 skipped
Test _S3 (System S3 State). 1 skipped
Test _S4 (System S4 State). 1 skipped
Test _S5 (System S5 State). 1 skipped
Test _WAK (System Wake). 5 passed
Test _ADR (Return Unique ID for Device). 75 passed
Test _BCL (Query List of Brightness Control Levels S.. 1 passed
Test _BCM (Set Brightness Level). 1 passed
Test _BQC (Brightness Query Current Level). 1 passed
Test _DCS (Return the Status of Output Device). 9 passed
Test _DDC (Return the EDID for this Device). 1 skipped
Test _DSS (Device Set State). 9 passed
Test _DGS (Query Graphics State). 9 passed
Test _DOD (Enumerate All Devices Attached to Display.. 1 passed
Test _DOS (Enable/Disable Output Switching). 1 passed
Test _GPD (Get POST Device). 1 skipped
Test _ROM (Get ROM Data). 1 skipped
Test _SPD (Set POST Device). 1 skipped
Test _VPO (Video POST Options). 1 skipped
Test _CBA (Configuration Base Address). 1 skipped
Test _IFT (IPMI Interface Type). 1 skipped
Test _SRV (IPMI Interface Revision). 1 skipped [/code]

[code]martin@martin-W51XTU:~$ dmesg | grep 'ACPI: Video'
[ 8.092146] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)[/code]

[code]martin@martin-W51XTU:~$ cat /proc/version
Linux version 3.13.0-32-generic (buildd@kissel) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014[/code]

Thanks a lot in advance !

Martin

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57 [modified: boot/vmlinuz-3.13.0-32-generic]
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: martin 1948 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Nov 16 10:19:50 2014
HibernationDevice: RESUME=UUID=0e708f03-a742-4017-9e19-a7810933f42c
InstallationDate: Installed on 2014-11-15 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f2:b43b Chicony Electronics Co., Ltd
Bus 001 Device 003: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 001 Device 002: ID 8087:07dc Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Notebook W51XTU
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=108b5bfe-7cb6-4d1d-a4a7-deb2bc697f72 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-32-generic N/A
linux-backports-modules-3.13.0-32-generic N/A
linux-firmware 1.127.5
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/09/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W51XTU
dmi.board.vendor: Notebook
dmi.board.version: V1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.6.5:bd06/09/2014:svnNotebook:pnW51XTU:pvrNotApplicable:rvnNotebook:rnW51XTU:rvrV1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: W51XTU
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1393160/+subscriptions

Follow ups

Re: [Bug 1393160] Re: Backlight control not working; but entries in /sys/class/backlight.. Vendor: American Megatrends Inc.. Version: 5.6.5
From: Martin, 2014-11-22

References

[Bug 1393160] [NEW] Backlight control not working; but entries in /sys/class/backlight.. Vendor: American Megatrends Inc.. Version: 5.6.5
From: Martin, 2014-11-16