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	Replies: 4 - Pages: 1 - Last Post: 16-Oct-2011 12:31 Last Post By: Frankiewizard_1	Threads: [ Previous \| Next ]

Toshuser_1

Posts: 1
Registered: 19/02/11

Satellite C650-I5011 - Brightness control is not working
Posted: 19-Feb-2011 14:05

Hi,

I have a Toshiba C650 - I5011 model with Ubuntu 10.3 . I have a problem that even after pressing the Fn + F6 key, the brightness of my LCD does'nt change.
It remains at maximum.

I have installed both Toshutils and hotkey daemon. My volume control key (on numeric alternate) works perfectly fine but none of the Function keys work. Pls help.
Also, I had errors during installation of Ubuntu on my laptop because of which I had to permanently disable ACPI, else it won't boot. Following is the lspci output :

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 05)
00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
01:00.0 Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1)
02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)

Macius

Posts: 1,672
Registered: 26/09/09

Re: Satellite C650-I5011 - Brightness control is not working
Posted: 23-Feb-2011 16:36

in response to: Toshuser_1

As you probably know Toshiba doesn’t support Linux and you will be lucky if anyone here would be able to offer some help.
I recommend you to visit some Linux forum and ask there. On Linux forum you have better chance to get some assistance with this.

KannLoar

Posts: 1
Registered: 18/03/11

Re: Satellite C650-I5011 - Brightness control is not working
Posted: 18-Mar-2011 13:13

in response to: Toshuser_1

Hello,

The backlight detection depends from acpi options selection on your kernel. Which kernel version do you use ?
$ uname -a

(Use at least a 2.6.36 kernel since a lot of improvement for recent Toshiba laptop have been done during summer 2010)

This done, ACPI options beeing compiled into kernel or loaded as module, this line should appear in your /var/log/Xorg.0.log :
"found backlight control interface /sys/class/backlight/acpi_video0"

Having a C650-15Z, my brightness control works well.

regards,
alex

calebb11

Posts: 37
Registered: 14/09/09

Re: Satellite C650-I5011 - Brightness control is not working
Posted: 19-Apr-2011 13:29

in response to: Toshuser_1

For the backlight brightness problem I would try setting it by going to Power Management options (I think it's in the System menu but if not try Administration) instead of using the function keys. Change the option in both Battery mode and Plugged in mode and see if that works.

Frankiewizard_1

Posts: 4
Registered: 04/05/09

Re: Satellite C650-I5011 - Brightness control is not working
Posted: 16-Oct-2011 12:31

in response to: Toshuser_1

Have you tryed going to the top of the screen then click on the bar (right click) = add to panel then choose bightness applet click on add then Bobs your uncle.

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