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System Interrupts making W10 x86 unusable.
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Running W10 x86 preview on an older Acer 9301 (which runs 8.1 fine).
System interrupts are apparently rendering the OS unusable for me in that they are taking all the CPU resources. I'm unable to kill the process in task manager (end process is greyed out for this).
Any suggestions at what may be causing this ?
Thursday, October 02, 2014 1:36 PM
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Answers
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I've found the culprit on mine. It was an Atheros WiFi driver 3:0:2:168 installed automatically during the install procedure. Forcing another driver onto the system (7:2:0:152) has brought the system interrupts and CPU usage down to normal (1-2%)
The Atheros card is AR5005G.
- Marked as answer by Mooly01 Thursday, October 02, 2014 5:42 PM
Thursday, October 02, 2014 5:42 PM
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Same thing here, both System and System Interrupts are using about 40% CPU when idle, all the time.Thursday, October 02, 2014 2:40 PM
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I've found the culprit on mine. It was an Atheros WiFi driver 3:0:2:168 installed automatically during the install procedure. Forcing another driver onto the system (7:2:0:152) has brought the system interrupts and CPU usage down to normal (1-2%)
The Atheros card is AR5005G.
- Marked as answer by Mooly01 Thursday, October 02, 2014 5:42 PM
Thursday, October 02, 2014 5:42 PM -
Hmm I have a Broadcom Wifi card unfortunately, how did you determine the cause of the high CPU usage?Friday, October 03, 2014 1:30 AM
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I did it by drastic means. Goto <device manager> and expand all the devices and entries one at a time, right click and disable or uninstall depending on what you are trying. I worked through USB root hubs, display adapter, the wifi driver was about the last thing I tried. Be prepared for things to stop working, mouse, keypad etc depending what you try.
Friday, October 03, 2014 6:21 AM -
Retina MacBook Pro 13" Intel i7 2.8 GHz 16 GB RAM 1 TB SSD
Clean installation of Windows 10 Technical Preview in a Boot Camp partition went without a hitch, except for the Broadcom Wireless adapter driver which had to be updated manually. However, I noted a high CPU load, even in idle, that was draining the battery excessively compared with Windows 7 x64. The Task Manager listed two culprits: "System" and "System Interrupt", for an average total of 30% CPU load divided more or less evenly between the two. I tried disabling the Broadcom wireless and bluetooth adapters to no effect and was forced to return to Windows 7 since my battery life had effectively been cut in half.
A real shame, since I was enjoying the new operating system and am sure I'll upgrade when it's ready for release. I especially liked the OS X - like "Exposé" feature from the Task Bar. The only thing I missed was the Aero transparency and the Windows 7 Explorer command bar. One of my favourite games also failed to load in Windows 10, but I can fall back on CrossOver in OS X Yosemite.
Friday, October 03, 2014 1:39 PM -
I'm not having any of these problems on my old Lenovo T60, I do however experienced problems with the wifi driver, it seems to lose connection intermittendly. Wired network works fine for now.Friday, October 03, 2014 9:25 PM
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I have a retina Macbook Pro 13" too, I feel like the cause of the high system usage is probably one of Apple's drivers. I'm going to wipe the system and reinstall, then install the Apple drivers one by one.Friday, October 03, 2014 11:47 PM
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I have a retina Macbook Pro 13" too, I feel like the cause of the high system usage is probably one of Apple's drivers. I'm going to wipe the system and reinstall, then install the Apple drivers one by one.
I think I just fixed the issue... at least until the next reboot. I closed my computer to put it in sleep mode and when I opened it up again, checked the Task Manager and the System and System Interrupts processes had gone down to using almost zero CPU. So, it seems like a way to fix it (at least for Macs) is to put the computer in sleep mode and wake it up.Sunday, October 05, 2014 2:07 AM -
Thanks for the tip, ShotSkydiver!
After restoring my system to Windows 7 x64 from a previous backup I noted the exact same issue. Putting my computer to sleep did indeed solve the problem, but I'd like to know the root cause of this issue.
I've gone back to Windows 10 Technical Preview again and will research a bit, but the workaround you provided has definitely helped!
Sunday, October 05, 2014 7:42 AM -
I haven't found the root cause of this issue yet but ran a trace using the DPC Latency Checker Tool and found ACPI.sys and HAL to be the culprits. Apparently there seems to be a problem with the power settings, but disabling the ACPI Compliant Control Method Battery driver didn't help. If anyone has experienced this issue please advise...Tuesday, October 14, 2014 10:48 AM
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I've isolated the source of this issue to the Intel Graphics 5100 drivers. Still no solution yet, just the resume workaround, but I'll let everyone here know if one is found.Monday, October 20, 2014 1:16 PM
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Hi
Have the same issue, rMBP 13" Late 2013. Just updated OS X to 10.10 and now have this System & System Interrupts hogging 25% CPU when the system is idle.
Though this is isolated to all versions of windows. I have the same issue with Win 7, 8.1 & 10.
May need to get Apple engineering on this...
Tuesday, October 21, 2014 11:39 AM