Arch Linux

dfe

Member

Registered: 2013-10-08

Posts: 2

ThinkPad Edge E530 - ACPI interrupt storm

Hi,

I'm currently trying to get Arch running on my ThinkPad E530. Everything is working fine so far, except that I noticed that powertop constantly reports around 20% CPU usage (one of the cores is busy all the time). This is caused by a massive number of ACPI interrupts (powertop shows 5000-6000 Events/s).

/proc/interrupts looks like this after only 1 minute uptime:

           CPU0       CPU1       CPU2       CPU3       
  0:         19          0          0          0   IO-APIC-edge      timer
  1:        394         28         16          7   IO-APIC-edge      i8042
  8:          0          0          0          1   IO-APIC-edge      rtc0
  9:      19115    4016389       3694      66503   IO-APIC-fasteoi   acpi
 12:       1734         95         53         80   IO-APIC-edge      i8042
 16:          1         22          1          9   IO-APIC-fasteoi   ehci_hcd:usb1
 23:          3         24          0          8   IO-APIC-fasteoi   ehci_hcd:usb2
 40:         15         22          0         16   PCI-MSI-edge      i915
 41:         13          4          6          6   PCI-MSI-edge      rtsx_pci
 42:          0          0          0          0   PCI-MSI-edge      xhci_hcd
 43:       8350        915       2425        830   PCI-MSI-edge      ahci
 44:          5          3         12          4   PCI-MSI-edge      mei_me
 46:       2578        191         17         65   PCI-MSI-edge      iwlwifi
 47:        169         76          0         14   PCI-MSI-edge      snd_hda_intel
NMI:          0          0          0          0   Non-maskable interrupts
LOC:       1470        979       2241       1626   Local timer interrupts
SPU:          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0   Performance monitoring interrupts
IWI:         52         38         32         53   IRQ work interrupts
RTR:          2          0          0          0   APIC ICR read retries
RES:       3531       5966       6577       3352   Rescheduling interrupts
CAL:         17         23         24         28   Function call interrupts
TLB:          7         62          8         27   TLB shootdowns
TRM:          0          0          0          0   Thermal event interrupts
THR:          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0   Machine check exceptions
MCP:          2          2          2          2   Machine check polls
ERR:          0
MIS:          0

You can find a full dmesg here.

The laptop has the latest UEFI firmware installed. It also doesn't matter if it's running on battery or AC. I booted the latest Fedora and Ubuntu live CDs and the problem remained. Maybe the hardware of my laptop is somehow broken?

I hope somebody experienced a similar problem and knows how to fix it, as this is really annoying (battery lasts only 2 hours).

WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: ThinkPad Edge E530 - ACPI interrupt storm

I have a ThinkPad Edge E430 (Ivy Bride), and things work just fine here…