Sony Vaio VGN-SA/SB

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Hardware	PCI/USB ID	Working?
Touchpad		Yes
Keyboard		Yes
Video (ATI)		Yes
Video (Intel)		Yes
Ethernet		Yes
Wireless		Yes

Video

"STAMINA-SPEED" switch is designed as a software switch. This DIP switch is located on one of the individual circuit from mainboard, separately. For easy to understand it, just imagine such as a wireless switch on laptop computers. Therefore, there is nothing to do; feel free to control this switch. Follows are only suggestions within ATI models, your style to go.

Disable discrete graphics on boot with a systemd unit

You can use systemd to automatically disable your discrete graphics card on boot. You need to make a script file and a service file. You will not need to do what's in section 2.2.2 if you do this

1) First, make a script file in /usr/lib/systemd/scripts an example name would be ati_off.

#!/bin/bash
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

2) Next, make a service file (e.g. atioff.service) in /usr/lib/systemd/system.

[Unit]
Description=Turn off the discrete graphics card on boot

[Service]
Type=oneshot
ExecStart=/bin/bash /usr/lib/systemd/scripts/ati_off
RemainAfterExit=no

[Install]
Wantedby=multi-user.target

Now enable atioff.service.

ATI disabled on boot. Get long battery life.

If you want to get more long battery life first, take this method is recommended.

1) mounting debugfs

# mount -t debugfs debugfs /sys/kernel/debug

or /etc/fstab

debugfs /sys/kernel/debug debugfs 0 0

2) disable ATI using "vga_switcheroo"

Radeon module should be loaded.

# modprobe radeon

Power OFF ATI.

# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

Check status correct or not.

cat /sys/kernel/debug/vgaswitcheroo/switch

Result;

0:IGD:+:Pwr:0000:00:02.0

1:DIS: :Off:0000:01:00.0

Use both at any time. Switchable.

If you want to use both intel and ati, commands are avaiable.

1) mounting debugfs

2) using "vga_switcheroo" Radeon module should be loaded.

Enable ATI

# echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch

Enable intel

# echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch

Power ON/OFF

# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
# echo ON > /sys/kernel/debug/vgaswitcheroo/switch

Check current status

cat /sys/kernel/debug/vgaswitcheroo/switch

New functions. Set variety.

For more control completely, there is a way to use various functions which you like, e.g. setkeycode.

Please note: Unfortunately BIOS on this machine has no option in order to select which cards you want to use definitely.

Touchpad

ALPS touchpad is recognized as Im/PS2 Wheel Mouse with scrolling on the right edge. It is hard to be recognized as ALPS currently. A fix that allows for multitouch has been provided here: https://nwoki.wordpress.com/2012/10/02/multitouch-fix-for-alps-touchpad/