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Solved 8.1 Pro idle CPU usage


csand

Canadian Hoser
Member
Posts
36
#1
updated: 8.1 Pro idle CPU usage when HDMI is used

Hey folks, I need your help troubleshooting here.

This is with a clean install of 8.1 from a MS ISO, downloaded and installed on Nov 14th. It is fully up to date.
This behaviour was not present with Windows 8, but I have done 3 clean 8.1 installs with the same outcome.

When I first power on my laptop, after windows is loaded, Core 0 on my CPU (i7 4700MQ) idles at around 90%, with task manager showing 11-15% CPU usage. System interrupts shows the most usage of all items on the list.

before.jpg

I have changed the minimum usage in power options to 5% for all power profiles. This behaviour is present under low power, balanced, and high performance power modes and doesn't change if I change them. (See http://www.eightforums.com/performance-maintenance/32041-windows-8-task-manager-4th-gen-i7.html ). In low power mode the usage is slightly less but is still present.

This processor usage continues as I run other programs, or as long as I let it idle without going to sleep.

If I put my computer to sleep, and then wake it, after idling for a short while..
after.jpg

all is as it should be!

I have the latest drivers for my chipset, GPU, WiFi, and Intel graphics (laptop has switchable graphics). This behaviour is present even with the OEM 8.1 drivers for these items.
All my other drivers are the ones released by my laptop OEM (Sager) in the last couple of weeks, specifically for 8.1.

There is a new BIOS that is being released by Sager (Clevo, which is the company that makes Sager branded laptops, has already released their "8.1" BIOS, I am waiting for the official Sager one though). I suppose this could fix it, however another fellow with the same laptop as me is not seeing this issue.

So...
anyone have any ideas?

Thx in advance
 
Last edited:

My Computer

System One

  • OS
    Win 8 Pro 64bit
    Computer type
    Laptop
    System Manufacturer/Model
    Sager NP8265-S
    CPU
    i7 4700mq
    Motherboard
    Clevo
    Memory
    16GB DDR3 1600MHz
    Graphics Card(s)
    ATI HD8790m
    Sound Card
    onboard
    Monitor(s) Displays
    19" Samsung / 15.4" lcd
    Screen Resolution
    1680x1050
    Hard Drives
    128GB Adata SX300
    750GB WD 7200rpm
    PSU
    Clevo
    Case
    Clevo
    Cooling
    2 fans
    Keyboard
    10$ msi Chicklet
    Mouse
    gigabyte gm-m6800
    Internet Speed
    decent

csand

Canadian Hoser
Member
Posts
36
#2
So, I figured something out today..

If I unplug my monitor from the HDMI to my external monitor, the usage stops! Also if I boot without the HDMI in, there is no mystery usage. ALSO if I disable and then re-enable the ATI HD8970m, the usage stops!

This laptop has switchable graphics between Intel HD4600 and the ATI.

Anyone ever seen this before?
 

My Computer

System One

  • OS
    Win 8 Pro 64bit
    Computer type
    Laptop
    System Manufacturer/Model
    Sager NP8265-S
    CPU
    i7 4700mq
    Motherboard
    Clevo
    Memory
    16GB DDR3 1600MHz
    Graphics Card(s)
    ATI HD8790m
    Sound Card
    onboard
    Monitor(s) Displays
    19" Samsung / 15.4" lcd
    Screen Resolution
    1680x1050
    Hard Drives
    128GB Adata SX300
    750GB WD 7200rpm
    PSU
    Clevo
    Case
    Clevo
    Cooling
    2 fans
    Keyboard
    10$ msi Chicklet
    Mouse
    gigabyte gm-m6800
    Internet Speed
    decent

Hybrid Vigor

Member
Member
Posts
61
#3
Same Interrupts here. I just reinstalled my system with the 8.1 update from store, which was the first nightmare to bring it to work.
Without the latest Intel 4600 graphic driver, only the Windows standard graphic driver loaded, no Interrupts are shown in Task Manager. After installing the latest Intel driver System Interrupts are constantly using around 10 % CPU usage. Installing the Intel driver which Windows Update automatically would install ends up in a blank screen after logging on. Nightmare after nightmare. So I assume we have to wait until Intel comes up with a new 8.1 driver.
 

My Computer

System One

  • OS
    Windows 8.1 32-Bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home made
    CPU
    Intel Core i5 4670
    Motherboard
    AsRock z87m Pro4
    Memory
    4 GB 1600 12800U
    Graphics Card(s)
    Intel Graphics 4600
    Sound Card
    HD Audio
    Hard Drives
    SSD Samsung 840 Pro 128 GB
    2 TB WD Green
    PSU
    Cooler Master Silent Pro MII 420 W
    Case
    Cooler Master Silencio 650 Pure
    Cooling
    Semi passive: Thermalright Macho HR-02 Rev.A, Scythe Gentle Typhoon 800 rpm

Hybrid Vigor

Member
Member
Posts
61
#4
Ok, I found the culprit on my system.
It was an USB Controler. To be more precise: Intel(R) 8 Series/C220 Series USB EHCI#1 - 8C26
But at the first glance, it looked like the graphic driver caused the issue, cause there were no interrupts without the driver.
But my system protocol statet the system was unable to load some usb driver. But I have no USB troubles so far. Haven't tried USB 3.0 though.
 

My Computer

System One

  • OS
    Windows 8.1 32-Bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home made
    CPU
    Intel Core i5 4670
    Motherboard
    AsRock z87m Pro4
    Memory
    4 GB 1600 12800U
    Graphics Card(s)
    Intel Graphics 4600
    Sound Card
    HD Audio
    Hard Drives
    SSD Samsung 840 Pro 128 GB
    2 TB WD Green
    PSU
    Cooler Master Silent Pro MII 420 W
    Case
    Cooler Master Silencio 650 Pure
    Cooling
    Semi passive: Thermalright Macho HR-02 Rev.A, Scythe Gentle Typhoon 800 rpm

csand

Canadian Hoser
Member
Posts
36
#5
Interesting, it seem it is the same on mine. No new drivers from Intel... I wonder if this will ever be fixed?
 

My Computer

System One

  • OS
    Win 8 Pro 64bit
    Computer type
    Laptop
    System Manufacturer/Model
    Sager NP8265-S
    CPU
    i7 4700mq
    Motherboard
    Clevo
    Memory
    16GB DDR3 1600MHz
    Graphics Card(s)
    ATI HD8790m
    Sound Card
    onboard
    Monitor(s) Displays
    19" Samsung / 15.4" lcd
    Screen Resolution
    1680x1050
    Hard Drives
    128GB Adata SX300
    750GB WD 7200rpm
    PSU
    Clevo
    Case
    Clevo
    Cooling
    2 fans
    Keyboard
    10$ msi Chicklet
    Mouse
    gigabyte gm-m6800
    Internet Speed
    decent

Nemix

New Member
Power User
Posts
203
#6
For now it might be best to set USB selective suspend to On in Control Panel > Advanced Power Options if it's not already set.
 

My Computer

System One

  • OS
    Windows 8.1 Pro
    CPU
    Intel Core i7-2670QM
    Memory
    Samsung 8GB
    Graphics Card(s)
    NVIDIA GT 555M
    Hard Drives
    Intel 525 120GB | HGST Travelstar 1TB
    Mouse
    CM Storm Xornet | Microsoft Sculpt Comfort
    Internet Speed
    25 Mbps | 600 Kbps
    Other Info
    Seagate Backup Plus 1TB
#7
I set the maximum usage to 50%.

I was getting 99% usage always.

Now usage averages 40%.

I'll leave it there a while & see what happens.
Everything is running ok so far.
 

My Computer

System One

  • OS
    Windows 8.1.1 Pro with Media Center
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Gateway
    CPU
    AMD K140 Cores 2 Threads 2 Name AMD K140 Package Socket FT1 BGA Technology 40nm
    Motherboard
    Manufacturer Gateway Model SX2110G (P0)
    Memory
    Type DDR3 Size 8192 MBytes DRAM Frequency 532.3 MHz
    Graphics Card(s)
    ATI AMD Radeon HD 7310 Graphics
    Sound Card
    AMD High Definition Audio Device Realtek High Definition Audio USB Audio Device
    Monitor(s) Displays
    Name 1950W on AMD Radeon HD 7310 Graphics Current Resolution 1366x768 pixels Work Resolution 1366x76
    Screen Resolution
    Current Resolution 1366x768 pixels Work Resolution 1366x768 pixels
    Hard Drives
    AMD K140
    Cores 2
    Threads 2
    Name AMD K140
    Package Socket FT1 BGA
    Technology 40nm
    Specification AMD E1-1200 APU with Radeon HD Graphics
    Family F
    Extended Family 14
    Model 2
    Extended Model 2
    Stepping 0
    Revision ON-C0
    Instruction
    Browser
    Opera 24.0
    Antivirus
    Avast Internet Security

Hybrid Vigor

Member
Member
Posts
61
#8
Windows Update installed a new Intel 4600 graphics driver two days ago, I figured it is version 3379. On my system, the interrupts are gone with this driver installed. It doesn't show the version number in the update window, it only says WDDM 1.3 or something, but device manager states Version 3379, which is newer than the latest driver in the Intel download center (up to now).
 

My Computer

System One

  • OS
    Windows 8.1 32-Bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home made
    CPU
    Intel Core i5 4670
    Motherboard
    AsRock z87m Pro4
    Memory
    4 GB 1600 12800U
    Graphics Card(s)
    Intel Graphics 4600
    Sound Card
    HD Audio
    Hard Drives
    SSD Samsung 840 Pro 128 GB
    2 TB WD Green
    PSU
    Cooler Master Silent Pro MII 420 W
    Case
    Cooler Master Silencio 650 Pure
    Cooling
    Semi passive: Thermalright Macho HR-02 Rev.A, Scythe Gentle Typhoon 800 rpm

csand

Canadian Hoser
Member
Posts
36
#9
Windows Update installed a new Intel 4600 graphics driver two days ago, I figured it is version 3379. On my system, the interrupts are gone with this driver installed. It doesn't show the version number in the update window, it only says WDDM 1.3 or something, but device manager states Version 3379, which is newer than the latest driver in the Intel download center (up to now).
CONFIRMED

After reading your response in my email, I tried this when I got home from work today. Fixed!

So, anyone having this issue, go to Device Manager, expand Display Adapters, right click Intel Graphics 4600, and click "Update Driver Software...", then let it look online for drivers.

Thanks for the heads up Hybrid!

:D
 

My Computer

System One

  • OS
    Win 8 Pro 64bit
    Computer type
    Laptop
    System Manufacturer/Model
    Sager NP8265-S
    CPU
    i7 4700mq
    Motherboard
    Clevo
    Memory
    16GB DDR3 1600MHz
    Graphics Card(s)
    ATI HD8790m
    Sound Card
    onboard
    Monitor(s) Displays
    19" Samsung / 15.4" lcd
    Screen Resolution
    1680x1050
    Hard Drives
    128GB Adata SX300
    750GB WD 7200rpm
    PSU
    Clevo
    Case
    Clevo
    Cooling
    2 fans
    Keyboard
    10$ msi Chicklet
    Mouse
    gigabyte gm-m6800
    Internet Speed
    decent

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