Sony Vaio VGN-SA/SB
"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
#!/bin/bash echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
2) Next, make a service file (e.g. atioff.service) in
[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
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
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.
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.
# echo DDIS > /sys/kernel/debug/vgaswitcheroo/switch
# echo DIGD > /sys/kernel/debug/vgaswitcheroo/switch
# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch # echo ON > /sys/kernel/debug/vgaswitcheroo/switch
Check current status
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.
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/