Hi Acer Community,
I have an Acer Aspire F5-572G-595M, and specs are as follows
Intel Core i5-6200U
Nvidia GeForce 920M
16GB DDR3 L
Samsung 850 Pro SSD
Since I brought the laptop, about 6-8 months back, this issue has been bugging me.
On idle, system interrupts uses a constant 10% CPU. When I use my touchpad, however, system interrupts rises up to 20%. Even a slight click or touch raises the usage. All these measurements are taken when the CPU speed is at a full turbo 2.8GHz
I have isolated the problems to these two components:
Audio driver. When I disable "High Definition Audio Controller" in System Devices in devmgmt.msc, the problem goes away immediately. System interrupts goes down to 0%, however, using the touchpad still raises the CPU usage to 10%. Mind you, disabling "Realtek High Definition Audio" in Sound, video, and game controllers doesn't help unless I restart the system.
Even when I open up my laptop and disconnect the sound wire the issue still persists. Using an external speaker does not help.
Touchpad. If I disable it using Fn+F7, the issue goes away when I touch the touchpad, but then I can't use the touchpad. Disabling "HID-compliant touch pad", "I2C HID Device", and "Synaptics HID Device" does not help.
I have installed the latest 1.17 touchpad firmware update, but the issue still persists. I have installed and used many versions of the Audio controller, as well as downloaded the touchpad drivers for my laptop frim the acer download page.
I would like to see this issue solved, either by a BIOS update or by some tweak. System interrupts causes a huge energy efficiency drop, and has a large detrimental effect on games.
Any help would be appreciated.