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- Content .- Fans  .- Knowledge Base  . 

Sony VAIO LCD Brightness Controler


KDE Hardware Utility

Score 49%
Sony VAIO LCD Brightness Controler

Link:  Link
Downloads:  2369
Submitted:  Oct 23 2004
Updated:  Oct 24 2004


This is a little utilities for user who use Sony Vaio Laptop.
It works as a kde systemtray,and supply a slider to control your LCD Brightness.

Sony V505 LCD brightness controller v0.1
1, make sure your kernel contains sonypi module
2, modify /etc/modules.conf, append:
alias char-major-10-250 sonypi
options sonypi minor=250
3, make the character device
mknod /dev/sonypi c 10 250
4, if you want anybody in this machine can use it.
chmod 666 /dev/sonypi
5, use root user to install:
./configure --prefix=/usr
make install
6, run it

6,if you want to make it start automatically ,copy sonylcd.desktop to /usr/share/autostart/


*2004 10 24
- add support to detect power or bat plug and remove. popup a Msg Box and change the system tray icon, if there is no bat, show a red icon, if there is bat and power, show a blue icon, if there is only bat ,show a black icon.

- auto adjust LCD brightness, if AC pluged, it will tune the brightness to 130, if it removed , it will tune the brightness to 50 to save power.

- add a tooltip to show the status of bat.

*2004 10 23
- the LCD is so dark under Linux.
- so I wirte the tool last night.
- initial release

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 does not work foe me

 by tlh2000 on: Oct 23 2004
Score 50%

if i load the sonypi module it outputs the following:
sonypi command failed at drivers/char/sonypi.c : sonypi_call1 (line 191)
sonypi command failed at drivers/char/sonypi.c : sonypi_call2 (line 201)
sonypi command failed at drivers/char/sonypi.c : sonypi_call2 (line 203)
sonypi command failed at drivers/char/sonypi.c : sonypi_call1 (line 191)
sonypi: Sony Programmable I/O Controller Driver v1.23.
sonypi: detected type2 model, verbose = 0, fnkeyinit = off, camera = off, compat = off, mask = 0xffffffff, useinput = on, acpi = on
sonypi: enabled at irq=11, port1=0x1080, port2=0x1084
sonypi: device allocated minor is 63
Sony VAIO Jog Dial installed.

i've added the modules.conf entry and changeg the rights of the node to 666

any hints?


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 Re: does not work foe me

 by cjacker on: Oct 23 2004
Score 50%

can it works for you?

if we must set the mknod minar and major personally, I will add a config dialog to support this.

If this tool can not works, can you give me some idea?

I hope we can let this tool work on any VAIO Laptop

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 by tlh2000 on: Oct 23 2004
Score 50%

maybe there should be a right-click menue?

could you also implement a powermanagement -menue? if plugged in brightness at 100% if not brightness at a customized value - for example

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 Re: suggestions

 by cjacker on: Oct 23 2004
Score 50%

good suggestion, I will add the right cliked menu to exti this program.

and add detection of power.

to set the brightness to 100 is not a good idea, it is too bright.

I plan to change the system tray icon to indicate that power line had been pluged.

if the laptop use bat, I will show the remaining of bat.

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 flooding.... sorry

 by tlh2000 on: Oct 23 2004
Score 50%

if i start the program via a xterm i get the following:

/dev/sonypi: Kein passendes Gerät gefunden
ioctl: Ungültiger Dateideskriptor
close: Ungültiger Dateideskriptor

i've created the node as you said with
mknod /dev/sonypi c 10 250

ps. right-click-menue: something were we can exit the program for example

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 Re: flooding.... sorry

 by cjacker on: Oct 23 2004
Score 50%

I am sorry that i can not add any comment, I use Sony VAIO PCG-V505GCP.
It works.

may be the driver can not drive your device, if you find what the problem is, please tell me.

I hope this tool can work on your laptop

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 no software download

 by mitchhy on: Apr 22 2006
Score 50%

The link to download this app is no longer valid, can u do something about it?

Tnx, Michel

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