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renegen

Member

Registered: 2010-09-08

Posts: 13

What USB device is making my CPU so hot?

On my good old laptop the CPU runs hot since udev keeps failing and retrying to connect some USB device. The systemd-udevd process maxes out my processor at near 100%.

Here are some clues as to what device is problematic

$ udevadm monitor
KERNEL[2233.548315] bind     /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
KERNEL[2233.550318] unbind   /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
UDEV  [2233.554589] bind     /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
KERNEL[2233.584200] bind     /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
KERNEL[2233.586308] unbind   /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
UDEV  [2233.587755] unbind   /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb)
...

# lspci -vvs1a.0
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03) (prog-if 00 [UHCI])
        Subsystem: Dell 82801I (ICH9 Family) USB UHCI Controller
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 20
        Region 4: I/O ports at 6f60 [size=32]
        Capabilities: [50] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: uhci_hcd

# lsusb -t
/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Application Specific Interface, Driver=, 12M
    |__ Port 1: Dev 2, If 1, Class=Chip/SmartCard, Driver=, 12M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/3p, 12M
        |__ Port 1: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=, 12M
        |__ Port 3: Dev 5, If 3, Class=Application Specific Interface, Driver=, 12M
        |__ Port 3: Dev 5, If 1, Class=Wireless, Driver=btusb, 12M
        |__ Port 3: Dev 5, If 2, Class=Vendor Specific Class, Driver=, 12M
        |__ Port 3: Dev 5, If 0, Class=Wireless, Driver=btusb, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M

/sys/bus/usb/devices/3-1.2:1.0$ ls
authorized         bInterfaceNumber    bNumEndpoints  power                 uevent
bAlternateSetting  bInterfaceProtocol  ep_81          subsystem
bInterfaceClass    bInterfaceSubClass  modalias       supports_autosuspend

/sys/bus/usb/devices/3-1.2:1.0$ cat modalias 
usb:v413Cp8162d0100dc00dsc00dp00ic03isc01ip02in00

Will I ever be able to tell which device is the cause of udev spamming bind/unbind-messages? How do I understand the seemingly varying ways of enumerating USB-devices?

thx in advance

alphaniner

Member

From: Ancapistan

Registered: 2010-07-12

Posts: 2,810

Re: What USB device is making my CPU so hot?

I plugged a couple thumb drives into a USB hub:

/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/4p, 12M
        |__ Port 1: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 12M
        |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usb-storage, 12M

When I plugged in the first one, I saw messages from udevadm monitor containing this:

/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2.1/6-2.1:1.0

When I plugged in the second one, I saw messages containing this:

/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2.3/6-2.3:1.0

Based on that, I think the bit "X-Y.Z" ie refers to Bus:Port:Port so in your case the problem device (3-1.2) is

        |__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=, 12M

---

But whether the Constitution really be one thing, or another, this much is certain - that it has either authorized such a government as we have had, or has been powerless to prevent it. In either case, it is unfit to exist.
-Lysander Spooner

Lone_Wolf

Forum Moderator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,922

Re: What USB device is making my CPU so hot?

post the output of lsusb  without any parameters, that list should help to identify brand/model of the device at 3-1.2 .

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

renegen

Member

Registered: 2010-09-08

Posts: 13

Re: What USB device is making my CPU so hot?

thanks Lone_Wolf and alphaniner

So then it would be my touchpad according to the output below? This bootup the device is numbered 12. The weird thing is that the devices (10-13) under bus 3 changes numbers every time I toggle the wifi-switch off and on. So, strange that the touchpad is sorted under devices that change enumeration when wifi is toggled.

Btw the touchpad is working fine, but I guess it could still be the thing causing the messages...

$ lsusb -t
/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Application Specific Interface, Driver=, 12M
    |__ Port 1: Dev 2, If 1, Class=Chip/SmartCard, Driver=, 12M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 10, If 0, Class=Hub, Driver=hub/3p, 12M
        |__ Port 1: Dev 11, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 2: Dev 12, If 0, Class=Human Interface Device, Driver=, 12M
        |__ Port 3: Dev 13, If 3, Class=Application Specific Interface, Driver=, 12M
        |__ Port 3: Dev 13, If 1, Class=Wireless, Driver=btusb, 12M
        |__ Port 3: Dev 13, If 2, Class=Vendor Specific Class, Driver=, 12M
        |__ Port 3: Dev 13, If 0, Class=Wireless, Driver=btusb, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M

$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications Processor
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 013: ID 413c:8160 Dell Computer Corp. Wireless 365 Bluetooth
Bus 003 Device 012: ID 413c:8162 Dell Computer Corp. Integrated Touchpad [Synaptics]
Bus 003 Device 011: ID 413c:8161 Dell Computer Corp. Integrated Keyboard
Bus 003 Device 010: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

# lsusb -vs3\:12
Bus 003 Device 012: ID 413c:8162 Dell Computer Corp. Integrated Touchpad [Synaptics]
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x413c Dell Computer Corp.
  idProduct          0x8162 Integrated Touchpad [Synaptics]
  bcdDevice            1.00
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.11
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     113
          Report Descriptor: (length is 113)
            Item(Global): Usage Page, data= [ 0x01 ] 1
                            Generic Desktop Controls
            Item(Local ): Usage, data= [ 0x02 ] 2
                            Mouse
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Global): Report ID, data= [ 0x02 ] 2
            Item(Local ): Usage, data= [ 0x01 ] 1
                            Pointer
            Item(Main  ): Collection, data= [ 0x00 ] 0
                            Physical
            Item(Global): Usage Page, data= [ 0x09 ] 9
                            Buttons
            Item(Local ): Usage Minimum, data= [ 0x01 ] 1
                            Button 1 (Primary)
            Item(Local ): Usage Maximum, data= [ 0x03 ] 3
                            Button 3 (Tertiary)
            Item(Global): Logical Minimum, data= [ 0x00 ] 0
            Item(Global): Logical Maximum, data= [ 0x01 ] 1
            Item(Global): Report Size, data= [ 0x01 ] 1
            Item(Global): Report Count, data= [ 0x03 ] 3
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Global): Report Count, data= [ 0x01 ] 1
            Item(Global): Report Size, data= [ 0x05 ] 5
            Item(Main  ): Input, data= [ 0x01 ] 1
                            Constant Array Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Global): Usage Page, data= [ 0x01 ] 1
                            Generic Desktop Controls
            Item(Local ): Usage, data= [ 0x30 ] 48
                            Direction-X
            Item(Local ): Usage, data= [ 0x31 ] 49
                            Direction-Y
            Item(Global): Logical Minimum, data= [ 0x81 ] 129
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Main  ): Input, data= [ 0x06 ] 6
                            Data Variable Relative No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
            Item(Main  ): End Collection, data=none
            Item(Global): Usage Page, data= [ 0x0c ] 12
                            Consumer
            Item(Local ): Usage, data= [ 0x01 ] 1
                            Consumer Control
            Item(Main  ): Collection, data= [ 0x01 ] 1
                            Application
            Item(Global): Report ID, data= [ 0x7f ] 127
            Item(Global): Usage Page, data= [ 0x00 0xff ] 65280
                            (null)
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Report Count, data= [ 0x03 ] 3
            Item(Global): Logical Minimum, data= [ 0x00 ] 0
            Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
            Item(Local ): Usage Minimum, data= [ 0x40 0xfc ] 64576
                            (null)
            Item(Local ): Usage Maximum, data= [ 0x42 0xfc ] 64578
                            (null)
            Item(Main  ): Feature, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Global): Report ID, data= [ 0x7e ] 126
            Item(Global): Report Count, data= [ 0x1b ] 27
            Item(Local ): Usage Minimum, data= [ 0x44 0xfc ] 64580
                            (null)
            Item(Local ): Usage Maximum, data= [ 0x5e 0xfc ] 64606
                            (null)
            Item(Main  ): Feature, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Global): Report ID, data= [ 0x7d ] 125
            Item(Global): Report Size, data= [ 0x01 ] 1
            Item(Global): Report Count, data= [ 0x0a ] 10
            Item(Global): Logical Maximum, data= [ 0x01 ] 1
            Item(Local ): Usage Minimum, data= [ 0x5f 0xfc ] 64607
                            (null)
            Item(Local ): Usage Maximum, data= [ 0x68 0xfc ] 64616
                            (null)
            Item(Main  ): Input, data= [ 0x02 ] 2
                            Data Variable Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Global): Report Count, data= [ 0x06 ] 6
            Item(Main  ): Input, data= [ 0x01 ] 1
                            Constant Array Absolute No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield
            Item(Main  ): End Collection, data=none
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              10
        ** UNRECOGNIZED:  1c ff 42 49 53 54 00 01 03 08 05 00 00 00 00 00 01 09 f4 01 02 0a f4 01 03 0b f4 01
Device Status:     0x0001
  Self Powered

Lone_Wolf

Forum Moderator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,922

Re: What USB device is making my CPU so hot?

It does look like the touchpad is indeed involved.

All devices on bus 3 appear to be builtin, so you can't put them in other ports.

A few things to try :
- Disable touchpad in firmware (if possible...) to test if this stops the bind / unbind

- boot into multi-user.target to verify whether X / libinput / evdev are involved

- When did the issue start ? was there a systemd or kernel update shortly before that ?

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

renegen

Member

Registered: 2010-09-08

Posts: 13

Re: What USB device is making my CPU so hot?

A few things to try :
- Disable touchpad in firmware (if possible...) to test if this stops the bind / unbind

This did disable the touchpad for any use in X, but the binds/unbinds were still there when I checked in the terminal.

Edit: Here are the usb-listings when the touchpad has been disabled in BIOS.

$ lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications Processor
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 005: ID 413c:8160 Dell Computer Corp. Wireless 365 Bluetooth
Bus 003 Device 004: ID 413c:8162 Dell Computer Corp. Integrated Touchpad [Synaptics]
Bus 003 Device 003: ID 413c:8161 Dell Computer Corp. Integrated Keyboard
Bus 003 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

$ lsusb -t
/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Application Specific Interface, Driver=, 12M
    |__ Port 1: Dev 2, If 1, Class=Chip/SmartCard, Driver=, 12M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/3p, 12M
        |__ Port 1: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=, 12M
        |__ Port 3: Dev 5, If 3, Class=Application Specific Interface, Driver=, 12M
        |__ Port 3: Dev 5, If 1, Class=Wireless, Driver=btusb, 12M
        |__ Port 3: Dev 5, If 2, Class=Vendor Specific Class, Driver=, 12M
        |__ Port 3: Dev 5, If 0, Class=Wireless, Driver=btusb, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M

- boot into multi-user.target to verify whether X / libinput / evdev are involved

systemd.unit=multi-user.target
Same problems also without X or display manager running.

- When did the issue start ? was there a systemd or kernel update shortly before that ?

No idea when it started unfortunately. I haven't used this laptop much lately, but was planning to start using it again.

Anyone have any other ideas abt what to do? I wanna use this comfy old laptop more but this issue needless to say ruins battery-time, besides creating heat and slowing the computer down.

Last edited by renegen (2018-06-07 17:33:43)

x33a

Forum Fellow

Registered: 2009-08-15

Posts: 4,587

Re: What USB device is making my CPU so hot?

You might want to give powertop a try too, which might help narrow things down.

Edit: Moving thread to "Kernel & Hardware".

Last edited by x33a (2018-06-08 04:53:44)

seth

Member

Registered: 2012-09-03

Posts: 51,254

Re: What USB device is making my CPU so hot?

The main question is why the device constantly rebinds.
This is either a software issue (cyclic udev rule, stupid power saving tool, ...) or hardware (loose contact, stuck key causing some event)

=> Run some life distro (grml, knoppix, ubuntu, ...)and check whether the problem exists w/ an entirely different software stack.

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

renegen

Member

Registered: 2010-09-08

Posts: 13

Re: What USB device is making my CPU so hot?

Hey and thanks for all the replies so far.

So, what I did was to try the latest Arch-liveUSB. No issues there.

Inspired by some other threads like for example this one I decided to see if the internal bluetooth was related to the issue - and it was. I did a new Arch-install on a separate partition, and I could install the full Bluez-stack without issues until I added bluez-hid2hci (which apparently adds a udev-rule to switch some devices automatically from hid to hci-mode). That's when the spamming of bind/unbind started again.

It seems my internal bluetooth is not handled correctly by the current bluez-stack. I decided to keep bluez-hid2hci and disable the internal bluetooth-device in BIOS. All is working well now, except I cannot use the internal bluetooth (my external USB-bluetooth works).

I also installed Windows 10 on a scrap partition, and no bluetooth-device was found by Windows at all. (This was before I disabled it in BIOS.) Maybe it's simply a lesser known device with no support on any OS?

Anyway, if anyone knows a more proper solution that allows me to get the internal bluetooth working, let me know.