Arch Linux

BaconPie

Member

Registered: 2010-08-11

Posts: 209

LCD Brightness Toshiba Equium A100-147

I can't seem to set the brightness on my toshiba laptop.

$ xbacklight -set 00
$

Seems to pause for a while then returns a prompt as if it had completed but nothing changes.

$ toshset -lcd 50
required kernel toshiba support not enabled.

Self explanatory.

$ sudo setpci -v -s 00:02.1 F4.B=00
0000:00:02.1 @f4 0

This doesn't do anything either.

My current battery life is appalling. After a full charge and 35mins uptime I'm now on 43%. I have an xterm, google-chrome, X11 and fluxbox open. I've enabled most of the things in the laptop-mode daemon and another odd point if that my fan seems to be turning on at 46deg and off at 45deg. So all I can hear is fannnnnnn, offffffff, fannnnnnnn, offffffffff.

Weird.

Also, I'm using the xf86-video-intel-newest from the AUR.

Any help on any situation would be great. Thanks.

Last edited by BaconPie (2010-12-21 01:52:01)

BaconPie

Member

Registered: 2010-08-11

Posts: 209

Re: LCD Brightness Toshiba Equium A100-147

Just been digging around and found this:

$ cat /proc/acpi/video/GFX0/LCD/brightness 
levels:  0 20 40 60 80 100
current: 40

but I can't write to it:

$ ls -l /proc/acpi/video/GFX0/LCD/brightness 
-rw-r--r-- 1 root root 0 Dec 21 15:06 /proc/acpi/video/GFX0/LCD/brightness
$ sudo echo 100 > /proc/acpi/video/GFX0/LCD/brightness 
bash: /proc/acpi/video/GFX0/LCD/brightness: Permission denied

As root however I can access it:

# echo 20 > /proc/acpi/video/GFX0/LCD/brightness
# cat /proc/acpi/video/GFX0/LCD/brightness 
levels:  0 20 40 60 80 100
current: 20

So the file can be accessed but still no change in brightness...

Last edited by BaconPie (2010-12-21 15:10:42)

dziambo

Member

Registered: 2010-10-17

Posts: 8

Re: LCD Brightness Toshiba Equium A100-147

show "dmidecode"

BaconPie

Member

Registered: 2010-08-11

Posts: 209

Re: LCD Brightness Toshiba Equium A100-147

show "dmidecode"

$ sudo dmidecode       
# dmidecode 2.10
SMBIOS version fixup (2.31 -> 2.3).
SMBIOS 2.3 present.
36 structures occupying 1161 bytes.
Table at 0x000DC010.

Handle 0x0000, DMI type 0, 20 bytes
BIOS Information
        Vendor: Phoenix Technologies LTD
        Version: 2.00   
        Release Date: 08/30/2006
        Address: 0xE4180
        Runtime Size: 114304 bytes
        ROM Size: 1024 kB
        Characteristics:
                ISA is supported
                PCI is supported
                PC Card (PCMCIA) is supported
                PNP is supported
                APM is supported
                BIOS is upgradeable
                BIOS shadowing is allowed
                ESCD support is available
                Boot from CD is supported
                ACPI is supported
                USB legacy is supported
                AGP is supported
                BIOS boot specification is supported

Handle 0x0001, DMI type 1, 25 bytes
System Information
        Manufacturer: TOSHIBA
        Product Name: Satellite A100
        Version: PSB10U-SA10ES1
        Serial Number: 12345678901234567
        UUID: Not Settable
        Wake-up Type: Power Switch

Handle 0x0002, DMI type 2, 8 bytes
Base Board Information
        Manufacturer: Intel Corporation
        Product Name: MPAD-MSAE Customer Reference Boards
        Version: Not Applicable
        Serial Number: Not Applicable

Handle 0x0003, DMI type 3, 21 bytes
Chassis Information
        Manufacturer: No Enclosure
        Type: Other
        Lock: Not Present
        Version: N/A
        Serial Number: None
        Asset Tag: No Asset Tag
        Boot-up State: Safe
        Power Supply State: Safe
        Thermal State: Safe
        Security Status: None
        OEM Information: 0x00000000
        Height: 52 U
        Number Of Power Cords: 18
        Contained Elements: 0

Handle 0x0004, DMI type 4, 35 bytes
Processor Information
        Socket Designation: U1
        Type: Central Processor
        Family: Other
        Manufacturer: Intel
        ID: E8 06 00 00 FF FB E9 BF
        Version: Genuine Intel(R) CPU           T2
        Voltage: 3.3 V
        External Clock: Unknown
        Max Speed: 500 MHz
        Current Speed: 1600 MHz
        Status: Populated, Enabled
        Upgrade: Slot 1
        L1 Cache Handle: 0x0005
        L2 Cache Handle: 0x0006
        L3 Cache Handle: Not Provided
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

Handle 0x0005, DMI type 7, 19 bytes
Cache Information
        Socket Designation: L1 Cache
        Configuration: Enabled, Socketed, Level 1
        Operational Mode: Write Back
        Location: Internal
        Installed Size: 16 kB
        Maximum Size: 16 kB
        Supported SRAM Types:
                Burst
                Pipeline Burst
                Asynchronous
        Installed SRAM Type: Asynchronous
        Speed: Unknown
        Error Correction Type: Unknown
        System Type: Unknown
        Associativity: Unknown

Handle 0x0006, DMI type 7, 19 bytes
Cache Information
        Socket Designation: L2 Cache
        Configuration: Enabled, Socketed, Level 2
        Operational Mode: Write Back
        Location: External
        Installed Size: 2048 kB
        Maximum Size: 512 kB
        Supported SRAM Types:
                Burst
                Pipeline Burst
                Asynchronous
        Installed SRAM Type: Burst
        Speed: Unknown
        Error Correction Type: Unknown
        System Type: Unknown
        Associativity: Unknown

Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: J19
        Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
        External Reference Designator: COM 1
        External Connector Type: DB-9 male
        Port Type: Serial Port 16550A Compatible

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: J23
        Internal Connector Type: 25 Pin Dual Inline (pin 26 cut)
        External Reference Designator: Parallel
        External Connector Type: DB-25 female
        Port Type: Parallel Port ECP/EPP

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: J11
        Internal Connector Type: None
        External Reference Designator: Keyboard
        External Connector Type: Circular DIN-8 male
        Port Type: Keyboard Port

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
        Internal Reference Designator: J12
        Internal Connector Type: None
        External Reference Designator: PS/2 Mouse
        External Connector Type: Circular DIN-8 male
        Port Type: Keyboard Port

Handle 0x000B, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI Slot J11
        Type: 32-bit PCI
        Current Usage: Unknown
        Length: Long
        ID: 0
        Characteristics:
                5.0 V is provided
                3.3 V is provided

Handle 0x000C, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI Slot J12
        Type: 32-bit PCI
        Current Usage: Unknown
        Length: Long
        ID: 0
        Characteristics:
                5.0 V is provided
                3.3 V is provided

Handle 0x000D, DMI type 9, 13 bytes
System Slot Information
        Designation: PCI Slot J13
        Type: 32-bit PCI
        Current Usage: Unknown
        Length: Long
        ID: 0
        Characteristics:
                5.0 V is provided
                3.3 V is provided

Handle 0x000E, DMI type 10, 6 bytes
On Board Device Information
        Type: Sound
        Status: Disabled
        Description: ADI

Handle 0x000F, DMI type 11, 5 bytes
OEM Strings
        String 1: This is the Intel Calistoga
        String 2: Chipset CRB Platform

Handle 0x0010, DMI type 12, 5 bytes
System Configuration Options
        Option 1: Jumper settings can be described here.

Handle 0x0011, DMI type 15, 29 bytes
System Event Log
        Area Length: 16 bytes
        Header Start Offset: 0x0000
        Header Length: 16 bytes
        Data Start Offset: 0x0010
        Access Method: General-purpose non-volatile data functions
        Access Address: 0x0000
        Status: Valid, Not Full
        Change Token: 0x00000001
        Header Format: Type 1
        Supported Log Type Descriptors: 3
        Descriptor 1: POST error
        Data Format 1: POST results bitmap
        Descriptor 2: Single-bit ECC memory error
        Data Format 2: Multiple-event
        Descriptor 3: Multi-bit ECC memory error
        Data Format 3: Multiple-event

Handle 0x0012, DMI type 16, 15 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 2 GB
        Error Information Handle: Not Provided
        Number Of Devices: 2

Handle 0x0013, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: 32 bits
        Data Width: 32 bits
        Size: 1024 MB
        Form Factor: SODIMM
        Set: 1
        Locator: M1
        Bank Locator: Bank 0
        Type: DDR
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: Not Specified
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

Handle 0x0014, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: 32 bits
        Data Width: 32 bits
        Size: 1024 MB
        Form Factor: SODIMM
        Set: 1
        Locator: M2
        Bank Locator: Bank 1
        Type: DDR
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: Not Specified
        Serial Number: Not Specified
        Asset Tag: Not Specified
        Part Number: Not Specified

Handle 0x0015, DMI type 19, 15 bytes
Memory Array Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 2 GB
        Physical Array Handle: 0x0012
        Partition Width: 0

Handle 0x0016, DMI type 20, 19 bytes
Memory Device Mapped Address
        Starting Address: 0x00000000000
        Ending Address: 0x0003FFFFFFF
        Range Size: 1 GB
        Physical Device Handle: 0x0013
        Memory Array Mapped Address Handle: 0x0015
        Partition Row Position: Unknown
        Interleave Position: Unknown
        Interleaved Data Depth: Unknown

Handle 0x0017, DMI type 20, 19 bytes
Memory Device Mapped Address
        Starting Address: 0x00040000000
        Ending Address: 0x0007FFFFFFF
        Range Size: 1 GB
        Physical Device Handle: 0x0014
        Memory Array Mapped Address Handle: 0x0015
        Partition Row Position: Unknown
        Interleave Position: Unknown
        Interleaved Data Depth: Unknown

Handle 0x0018, DMI type 23, 13 bytes
System Reset
        Status: Enabled
        Watchdog Timer: Present
        Boot Option: Do Not Reboot
        Boot Option On Limit: Do Not Reboot
        Reset Count: Unknown
        Reset Limit: Unknown
        Timer Interval: Unknown
        Timeout: Unknown

Handle 0x0019, DMI type 24, 5 bytes
Hardware Security
        Power-On Password Status: Disabled
        Keyboard Password Status: Unknown
        Administrator Password Status: Disabled
        Front Panel Reset Status: Unknown

Handle 0x001A, DMI type 25, 9 bytes
        System Power Controls
        Next Scheduled Power-on: 12-31 23:59:59

Handle 0x001B, DMI type 26, 20 bytes
Voltage Probe
        Description: Voltage Probe
        Location: Processor
        Status: OK
        Maximum Value: Unknown
        Minimum Value: Unknown
        Resolution: Unknown
        Tolerance: Unknown
        Accuracy: Unknown
        OEM-specific Information: 0x00000000

Handle 0x001C, DMI type 27, 12 bytes
Cooling Device
        Temperature Probe Handle: 0x001D
        Type: Fan
        Status: OK
        OEM-specific Information: 0x00000000

Handle 0x001D, DMI type 28, 20 bytes
Temperature Probe
        Description: Temperature Probe
        Location: Processor
        Status: OK
        Maximum Value: Unknown
        Minimum Value: Unknown
        Resolution: Unknown
        Tolerance: Unknown
        Accuracy: Unknown
        OEM-specific Information: 0x00000000

Handle 0x001E, DMI type 29, 20 bytes
Electrical Current Probe
        Description: Electrical Current Probe
        Location: Processor
        Status: OK
        Maximum Value: Unknown
        Minimum Value: Unknown
        Resolution: Unknown
        Tolerance: Unknown
        Accuracy: Unknown
        OEM-specific Information: 0x00000000

Handle 0x001F, DMI type 30, 6 bytes
Out-of-band Remote Access
        Manufacturer Name: Intel
        Inbound Connection: Enabled
        Outbound Connection: Disabled

Handle 0x0020, DMI type 32, 20 bytes
System Boot Information
        Status: <OUT OF SPEC>

Handle 0x0021, DMI type 136, 8 bytes
OEM-specific Type
        Header and Data:
                88 08 21 00 FF FF 00 00
        Strings:
                .."
                ..

Handle 0x0022, DMI type 150, 14 bytes
OEM-specific Type
        Header and Data:
                96 0E 22 00 01 01 00 00 00 00 00 00 00 00
        Strings:
                ABSOLUTE(PHOENIX) CLM

Handle 0x0023, DMI type 127, 4 bytes
End Of Table

Last edited by BaconPie (2010-12-24 13:50:34)

bsdard

Member

From: Surrey, UK

Registered: 2011-01-22

Posts: 15

Re: LCD Brightness Toshiba Equium A100-147

Try this. I have Toshiba as well so I wrote it to address the issue. Works fine for me.
https://bbs.archlinux.org/viewtopic.php?id=112203

Installation:
make && sudo make install

Last edited by bsdard (2011-01-27 10:08:52)

BaconPie

Member

Registered: 2010-08-11

Posts: 209

Re: LCD Brightness Toshiba Equium A100-147

Correct me if i'm wrong but doesn't that just write a value to //sys/devices/virtual/backlight/acpi_video0/brightness?

I've tried writing to there as root and nothing changes. It only accepts numbers 0 to 5 too.

bsdard

Member

From: Surrey, UK

Registered: 2011-01-22

Posts: 15

Re: LCD Brightness Toshiba Equium A100-147

Yes, actually it does.
Sorry, I must have misread your previous posts.
What is the value in //sys/devices/virtual/backlight/acpi_video0/max_brightness. On my laptop it is 7 (so the range is 0-7).
There must be some issue with the driver.

Here what I see in lsmod:
i2c_i801                7126  0
i2c_core               15144  5 i915,drm_kms_helper,drm,i2c_algo_bit,i2c_i801
intel_agp              23794  2 i915
agpgart                23120  2 drm,intel_agp

Last edited by bsdard (2011-01-27 20:04:33)