Difference between revisions of "Acer Aspire TimelineX 4820TG"

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(Switchable Graphics: remove obsolete init script and useless note)
m (Switchable Graphics: style)
 
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This laptop contains inbuilt Intel HD & Radeon 5650 graphics adapters. The Intel HD graphics adapter is optimized for low power consumption which Radeon 5650 consumes high power.
 
This laptop contains inbuilt Intel HD & Radeon 5650 graphics adapters. The Intel HD graphics adapter is optimized for low power consumption which Radeon 5650 consumes high power.
  
To use Linux kernel's "Laptop Hybrid Graphics - GPU switching support" add following to [[fstab|/etc/fstab]]
+
To use Linux kernel's "Laptop Hybrid Graphics - GPU switching support" add following to [[fstab]]:
  
<pre>
+
none            /sys/kernel/debug debugfs defaults 0 0
none            /sys/kernel/debug debugfs defaults 0 0
 
</pre>
 
  
This will enable /sys/kernel/debug/vgaswitcheroo/switch  
+
This will enable {{ic|/sys/kernel/debug/vgaswitcheroo/switch}}.
  
<pre>
+
{{hc|# cat /sys/kernel/debug/vgaswitcheroo/switch|
[root@arp arp]# cat /sys/kernel/debug/vgaswitcheroo/switch
 
 
0:IGD:+:Pwr:0000:00:02.0
 
0:IGD:+:Pwr:0000:00:02.0
 
1:DIS: :Pwr:0000:01:00.0
 
1:DIS: :Pwr:0000:01:00.0
</pre>
+
}}
  
 
IDN - denotes integrated Intel graphics.
 
IDN - denotes integrated Intel graphics.
 
DIS - denotes discrete Radeon graphics.
 
DIS - denotes discrete Radeon graphics.
  
To switch-off Radeon, do following -
+
To switch-off Radeon:
  
<pre>
+
# echo "DIGD" > /sys/kernel/debug/vgaswitcheroo/switch
[root@arp arp]# echo "DIGD" > /sys/kernel/debug/vgaswitcheroo/switch
+
# echo "OFF"  > /sys/kernel/debug/vgaswitcheroo/switch
[root@arp arp]# echo "OFF"  > /sys/kernel/debug/vgaswitcheroo/switch
 
</pre>
 
  
<pre>
+
{{hc|# cat /sys/kernel/debug/vgaswitcheroo/switch|
[root@arp arp]# cat /sys/kernel/debug/vgaswitcheroo/switch
 
 
0:IGD:+:Pwr:0000:00:02.0
 
0:IGD:+:Pwr:0000:00:02.0
 
1:DIS: :Off:0000:01:00.0
 
1:DIS: :Off:0000:01:00.0
</pre>
+
}}
  
To switch-on both graphics chips, do following -
+
To switch-on both graphics chips:
<pre>
+
 
[root@arp arp]# echo "DIGD" > /sys/kernel/debug/vgaswitcheroo/switch
+
# echo "DIGD" > /sys/kernel/debug/vgaswitcheroo/switch
[root@arp arp]# echo "DDIS" > /sys/kernel/debug/vgaswitcheroo/switch
+
# echo "DDIS" > /sys/kernel/debug/vgaswitcheroo/switch
</pre>
 
  
 
===Enable CPU Frequency Scaling===
 
===Enable CPU Frequency Scaling===

Latest revision as of 13:57, 20 January 2018

Tango-edit-clear.pngThis article or section needs language, wiki syntax or style improvements.Tango-edit-clear.png

Reason: Does not comply with Help:Style and Category:Laptops guidelines. (Discuss in Talk:Acer Aspire TimelineX 4820TG#)

Acer Aspire TimelineX 4820TG is a 14-inch laptop that packs in an Intel Core i5-430M processor and dedicated ATI Radeon HD 5650 graphics, making it a powerful 14-inch laptop. ArchLinux works mostly works out of box, but there are few tweaks required to make the hardware fully compatible with ArchLinux.

Hardware

Make sure that you have BIOS_Acer_1.25_A_A.zip installed.

PowerSmart / Battery Optimization

Switchable Graphics

This laptop contains inbuilt Intel HD & Radeon 5650 graphics adapters. The Intel HD graphics adapter is optimized for low power consumption which Radeon 5650 consumes high power.

To use Linux kernel's "Laptop Hybrid Graphics - GPU switching support" add following to fstab:

none            /sys/kernel/debug debugfs defaults 0 0

This will enable /sys/kernel/debug/vgaswitcheroo/switch.

# cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0

IDN - denotes integrated Intel graphics. DIS - denotes discrete Radeon graphics.

To switch-off Radeon:

# echo "DIGD" > /sys/kernel/debug/vgaswitcheroo/switch
# echo "OFF"  > /sys/kernel/debug/vgaswitcheroo/switch
# cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Off:0000:01:00.0

To switch-on both graphics chips:

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

Enable CPU Frequency Scaling

Enabled by default, see CPU frequency scaling for details.

Power Usage

The power rating before tweak -

Power usage (ACPI estimate): 24.1W (2.8 hours)

The power rating after "switching off the radeon graphics" and "enabling laptop-mode tools".

Power usage (ACPI estimate): 11.1W (6.5 hours)

Sensors

Install lm_sensors.

Synaptics Touchpad

See Touchpad Synaptics.