Devices by 100% usage - How can I solve this problem?

Question

I have a Lenovo thinkpad e530 laptop. some device have 100% usage in it. The results of powertop are in below:

Usage     Device name
         10.8%        CPU use
        **100.0%        Audio codec hwC0D0: Conexant
        100.0%        Audio codec hwC0D3: Intel**
         40.0%        Display backlight
         11.0%        Display backlight
        206.2 pkts/s  Network interface: eth0 (r8169)
        162.6 pkts/s  nic:ppp0
        **100.0%        PCI Device: Intel Corporation Ivy Bridge DRAM Controller
        100.0%        PCI Device: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller
        100.0%        PCI Device: Intel Corporation Panther Point High Definition Audio Controller
        100.0%        PCI Device: Intel Corporation Panther Point PCI Express Root Port 1
        100.0%        PCI Device: Intel Corporation Panther Point MEI Controller #1
        100.0%        PCI Device: Intel Corporation Ivy Bridge Graphics Controller
        100.0%        USB device: EHCI Host Controller
        100.0%        USB Device: usb-device-8087-0024
        100.0%        PCI Device: Intel Corporation Panther Point PCI Express Root Port 2
        100.0%        PCI Device: Intel Corporation Panther Point USB Enhanced Host Controller #2
        100.0%        PCI Device: Intel Corporation Panther Point PCI Express Root Port 4
        100.0%        PCI Device: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
        100.0%        PCI Device: Intel Corporation Ivy Bridge PCI Express Root Port
        100.0%        PCI Device: Intel Corporation Panther Point PCI Express Root Port 3
        100.0%        PCI Device: Intel Corporation Panther Point USB xHCI Host Controller
        100.0%        PCI Device: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode]
        100.0%        USB device: TouchStrip Fingerprint Sensor       (UPEK)
        100.0%        PCI Device: Intel Corporation Panther Point USB Enhanced Host Controller #1
        100.0%        USB device: USB Optical Mouse**
          0.0 pkts/s  Network interface: wlan0 (brcmsmac)
          0.0 rpm     Laptop fan
          0.0%        Radio device: thinkpad_acpi
          0.0%        Radio device: brcmsmac
          0.0%        USB device: Integrated Camera (C6JC9FCAV)
          0.0%        USB Device: usb-device-8087-0024
          0.0%        USB device: xHCI Host Controller
          0.0%        USB device: xHCI Host Controller
          0.0%        USB device: EHCI Host Controller

How can I solve this problem?

score 1 · Accepted Answer · edited Apr 13 '17 at 12:24

1

This just means that you have all those devices enabled. So, it says that it's active 100% of the time and this is not a problem (on the contrary, it's a good thing).

In fact you should see man powertop to see what exactly is the purpose of this command. And see How to tweak Powertop to reduce power consumption? in this sense.

edited Apr 13 '17 at 12:24

Community

1

answered Jul 30 '13 at 19:56

Radu Rădeanu

174,089
51
332
407

Devices by 100% usage - How can I solve this problem?

1 Answers1