Ubuntu 18.04 systemd-udevd uses high CPU, conflict with wifi
Solution 1
I installed Ubuntu 18.04 LTS (AMD64) on my Dell XPS Studio 1340 and I was suffering the same issue. I've solved it by completely disabling Bluetooth from the BIOS. I know it isn't a solution but a workaround, but it works for me because I rarely use Bluetooth.
It looks like a bug in the kernel or systemd without a fix yet:
Solution 2
Here's a workaround:
Immediately after booting, run the following commands:
sudo systemctl stop systemd-udevd systemd-udevd-kernel.socket systemd-udevd-control.socket
sudo systemctl start systemd-udevd systemd-udevd-kernel.socket systemd-udevd-control.socket
It worked on my Dell laptop.
Solution 3
I think I've figured out the answer.
Run
/lib/systemd/systemd-udevd -D
should print garbage in endless loop containing ".../97-hid2hci.rules:"
If so, edit /lib/udev/rules.d/97-hid2hci.rules
and add
ACTION=="add"
in front of line mentioned by above command.
It should be something like this (I'm using fedora 28, but the problem looked identical):
ACTION=="add", ATTR{bInterfaceClass}=="03", ATTR{bInterfaceSubClass}=="01", ATTR{bInterfaceProtocol}=="02", \
ATTRS{bDeviceClass}=="00", ATTRS{idVendor}=="413c", ATTRS{bmAttributes}=="e0", \
RUN+="hid2hci --method=dell --devpath=%p", ENV{HID2HCI_SWITCH}="1"
With above fix, everything works perfect on my old Dell. Hope that helps ;)
Solution 4
As stated already in the previous answers, it's related to not the best one Dell Wireless 370 Bluetooth and I've been also affected by it with my Dell Studio XPS 1645.
Not only the bluetooth support has worked badly for a couple of years, now there is that new problem in kernel drivers affecting CPU usage.
I would just add that instead of removing /lib/udev/rules.d/97-hid2hci.rules file it's better to create an empty file instead:
touch /etc/udev/rules.d/97-hid2hci.rules
That will guarantee the issue not to reappear after bluez package update.
On a side note, I've finished with buying a bluetooth dongle for a pound or two on ebay but I'd rather have the laptop working as expected, of course.
Solution 5
In my case, this issue was due to bluez. Open Synaptic package manager and search for bluez, and uninstall it. Your problem will be solved.
Related videos on Youtube
Firouziam
Updated on September 18, 2022Comments
-
Firouziam over 1 year
I recently switched from Kubuntu 17.10 to Kubuntu 18.04 (fresh installed). The problem is the process
systemd-udevd
is constantly running and consuming 90-100% CPU load. After tinkering around with all devices I found out that it is because of WiFi! Once I turn on WiFi the process starts running and CPU load goes up to 100%. But whenever I turn off the WiFi it gets down to zero! here is thetop
results when WiFi is on:PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 338 root 20 0 94336 51744 3120 S 44.7 0.6 0:35.50 systemd-udevd 24957 root 20 0 67936 25248 2860 R 40.4 0.3 0:23.85 systemd-udevd 328 root 19 -1 150720 53068 52264 S 4.3 0.7 0:07.61 systemd-journal
and running:
strace -p 338
makes the following output repeatedly:strace: Process 338 attached strace: [ Process PID=338 runs in x32 mode. ] strace: [ Process PID=338 runs in 64 bit mode. ] epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=484799898}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=112300760}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=112454363}) = 0 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=485376240}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=112893238}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=113047679}) = 0 recvmsg(7, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=24957, uid=0, gid=0}}], msg_controllen=32, msg_flags=0}, MSG_DONTWAIT) = 0 recvmsg(7, {msg_namelen=0}, MSG_DONTWAIT) = -1 EAGAIN (Resource temporarily unavailable) sendmsg(3, {msg_name={sa_family=AF_NETLINK, nl_pid=-853365251, nl_groups=00000000}, msg_namelen=12, msg_iov=[{iov_base="libudev\0\376\355\312\376(\0\0\0(\0\0\0\315\0\0\0\5w\305\345\261\2Ge"..., iov_len=40}, {iov_base="ACTION=unbind\0DEVPATH=/devices/p"..., iov_len=205}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, 0) = 245 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}], 11, 0) = 1 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=495431807}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=123814890}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=123945023}) = 0 recvmsg(3, {msg_name={sa_family=AF_NETLINK, nl_pid=0, nl_groups=0x000001}, msg_namelen=128->12, msg_iov=[{iov_base="unbind@/devices/pci0000:00/0000:"..., iov_len=8192}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=0, uid=0, gid=0}}], msg_controllen=32, msg_flags=0}, 0) = 243 getrandom("\x9c\x6d\x41\x2b\xb5\xf0\xf1\x9a\x32\xb3\x4a\x73\xee\x04\xff\x90", 16, GRND_NONBLOCK) = 16 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=126971116}) = 0 getrandom("\xaf\x35\x7a\x36\x01\x32\xa6\xe6\x13\x46\x4e\x22\xcc\x48\x77\x9b", 16, GRND_NONBLOCK) = 16 getrandom("\x48\x0b\xeb\xf1\xf0\x1c\xf1\x78\x89\xb7\x48\xe1\x84\x38\xc9\x3c", 16, GRND_NONBLOCK) = 16 getrandom("\x11\x06\x8c\x4a\xeb\xff\x84\x8e\x0c\x09\x00\x84\x62\x74\xfc\xd7", 16, GRND_NONBLOCK) = 16 getrandom("\xb5\x8e\x19\x16\xad\xf6\x16\x7e\x21\x66\x90\x12\x2d\x43\x46\x45", 16, GRND_NONBLOCK) = 16 getrandom("\x84\x7d\x47\x96\x50\x36\xad\x28\x06\x6e\xed\x33\xe0\x05\x57\x20", 16, GRND_NONBLOCK) = 16 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=504542288}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=131992368}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=132096027}) = 0 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=504955877}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=132438717}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=132555928}) = 0 recvmsg(7, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=24957, uid=0, gid=0}}], msg_controllen=32, msg_flags=0}, MSG_DONTWAIT) = 0 recvmsg(7, {msg_namelen=0}, MSG_DONTWAIT) = -1 EAGAIN (Resource temporarily unavailable) sendmsg(3, {msg_name={sa_family=AF_NETLINK, nl_pid=-853365251, nl_groups=00000000}, msg_namelen=12, msg_iov=[{iov_base="libudev\0\376\355\312\376(\0\0\0(\0\0\0\23\1\0\0\5w\305\345\261\2Ge"..., iov_len=40}, {iov_base="ACTION=bind\0DEVPATH=/devices/pci"..., iov_len=275}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, 0) = 315 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}], 11, 0) = 1 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=512870505}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=140367037}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=140494166}) = 0 recvmsg(3, {msg_name={sa_family=AF_NETLINK, nl_pid=0, nl_groups=0x000001}, msg_namelen=128->12, msg_iov=[{iov_base="bind@/devices/pci0000:00/0000:00"..., iov_len=8192}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=0, uid=0, gid=0}}], msg_controllen=32, msg_flags=0}, 0) = 311 getrandom("\x21\xcd\x52\xae\x20\xa4\xe9\x0f\x2c\x3f\x68\x8a\x77\x65\xfb\x22", 16, GRND_NONBLOCK) = 16 getrandom("\xb5\x1f\x43\xf7\x14\x3e\x29\x6c\xdd\x95\xd5\x64\xec\xec\x66\xca", 16, GRND_NONBLOCK) = 16 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=141295429}) = 0 getrandom("\xe7\x73\x2e\xc2\x5d\x71\x93\x8a\xd0\xf4\x5f\xd7\x91\x1f\x7b\x00", 16, GRND_NONBLOCK) = 16 getrandom("\xe4\xd4\xd3\x2c\xa2\xa1\x0c\x96\x6e\x6a\x34\x9c\x50\x06\x3d\x43", 16, GRND_NONBLOCK) = 16 getrandom("\xb0\x7f\xf7\x93\x1f\xa6\x6d\x2e\x01\xfb\x21\x97\x4b\xe8\x85\x14", 16, GRND_NONBLOCK) = 16 getrandom("\x3f\x94\x2b\x17\x01\x8f\x88\x2e\x08\xa0\x9d\xd0\xef\x4f\x0e\x9a", 16, GRND_NONBLOCK) = 16 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=519062044}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=146474265}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=146513033}) = 0 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}, {EPOLLIN, {u32=4010060672, u64=94544830180224}}], 11, 0) = 2 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=519231922}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=146636530}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=146675297}) = 0 recvmsg(7, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=28, cmsg_level=SOL_SOCKET, cmsg_type=SCM_CREDENTIALS, cmsg_data={pid=24957, uid=0, gid=0}}], msg_controllen=32, msg_flags=0}, MSG_DONTWAIT) = 0 recvmsg(7, {msg_namelen=0}, MSG_DONTWAIT) = -1 EAGAIN (Resource temporarily unavailable) sendmsg(3, {msg_name={sa_family=AF_NETLINK, nl_pid=-853365251, nl_groups=00000000}, msg_namelen=12, msg_iov=[{iov_base="libudev\0\376\355\312\376(\0\0\0(\0\0\0\315\0\0\0\5w\305\345\261\2Ge"..., iov_len=40}, {iov_base="ACTION=unbind\0DEVPATH=/devices/p"..., iov_len=205}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, 0) = 245 epoll_wait(10, [{EPOLLIN, {u32=4010170080, u64=94544830289632}}], 11, 0) = 1 clock_gettime(CLOCK_REALTIME, {tv_sec=1524848329, tv_nsec=525080911}) = 0 clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=152528058}) = 0 clock_gettime(CLOCK_BOOTTIME, {tv_sec=1045, tv_nsec=152611810}) = 0 ....
running
udevadm monitor
prints the following repeatedly:KERNEL[1464.842652] bind /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb) KERNEL[1464.844393] unbind /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb) UDEV [1464.845340] bind /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb) KERNEL[1464.857728] bind /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb) KERNEL[1464.858361] unbind /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 (usb) ....
and running
journalctl
returns repeatedly:Apr 27 05:22:09 amir-pc systemd-udevd[359]: Process 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3 Apr 27 05:22:09 amir-pc upowerd[1339]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 -- Logs begin at Fri 2018-04-27 05:22:09 +0430, end at Fri 2018-04-27 21:37:15 +0430. -- Apr 27 05:22:09 amir-pc systemd-udevd[359]: Process 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3 Apr 27 05:22:09 amir-pc upowerd[1339]: unhandled action 'unbind' on /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 Apr 27 05:22:09 amir-pc systemd-udevd[359]: Process 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3 Apr 27 05:22:09 amir-pc upowerd[1339]: unhandled action 'bind' on /sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0 ....
running
dmesg
returns:[ 441.582359] usb 3-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 441.582361] usb 3-1.3: Product: Dell Wireless 370 Bluetooth Mini-card [ 441.582363] usb 3-1.3: Manufacturer: Dell Computer Corp [ 450.803644] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.811642] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.819653] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.826650] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.833668] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.841644] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.848630] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.856628] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.863632] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.871611] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.881629] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.888616] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.896634] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.903596] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.910611] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.917595] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.926603] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.933598] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.942616] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.949606] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.957363] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.964607] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.973581] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.980582] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.987582] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 450.994561] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 451.004574] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 451.009525] ERROR @wl_cfg80211_scan : [ 451.009527] WLC_SCAN error (-22) [ 451.010550] usb 3-1.2: usbfs: USBDEVFS_CONTROL failed cmd hid2hci rqt 33 rq 9 len 4 ret -71 [ 451.020078] usb 3-1: USB disconnect, device number 14 [ 451.020081] usb 3-1.1: USB disconnect, device number 15 [ 451.076974] usb 3-1.2: USB disconnect, device number 16 [ 451.077105] usb 3-1.3: USB disconnect, device number 19 [ 796.468102] usb 3-1: new full-speed USB device number 20 using uhci_hcd [ 796.672318] usb 3-1: New USB device found, idVendor=0a5c, idProduct=4500 [ 796.672322] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 796.672325] usb 3-1: Product: BCM2046B1 [ 796.672328] usb 3-1: Manufacturer: Broadcom [ 796.674239] hub 3-1:1.0: USB hub found [ 796.676385] hub 3-1:1.0: 3 ports detected [ 796.976059] usb 3-1.1: new full-speed USB device number 21 using uhci_hcd [ 797.109323] usb 3-1.1: New USB device found, idVendor=413c, idProduct=8157 [ 797.109332] usb 3-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.116785] input: HID 413c:8157 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.1/3-1.1:1.0/0003:413C:8157.000B/input/input25 [ 797.176461] hid-generic 0003:413C:8157.000B: input,hidraw0: USB HID v1.11 Keyboard [HID 413c:8157] on usb-0000:00:1a.0-1.1/input0 [ 797.256314] usb 3-1.2: new full-speed USB device number 22 using uhci_hcd [ 797.396307] usb 3-1.2: New USB device found, idVendor=413c, idProduct=8158 [ 797.396315] usb 3-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.405072] input: HID 413c:8158 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0/0003:413C:8158.000C/input/input26 [ 797.464858] hid-generic 0003:413C:8158.000C: input,hidraw3: USB HID v1.11 Mouse [HID 413c:8158] on usb-0000:00:1a.0-1.2/input0 [ 797.564507] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready [ 797.944045] usb 3-1.3: new full-speed USB device number 23 using uhci_hcd [ 803.296508] usb 3-1.3: unable to read config index 0 descriptor/all [ 803.296515] usb 3-1.3: can't read configurations, error -110 [ 803.376039] usb 3-1.3: new full-speed USB device number 24 using uhci_hcd [ 808.672986] usb 3-1.3: unable to read config index 0 descriptor/all [ 808.672993] usb 3-1.3: can't read configurations, error -110 [ 808.673984] usb 3-1-port3: attempt power cycle [ 809.280029] usb 3-1.3: new full-speed USB device number 25 using uhci_hcd [ 809.340944] usb 3-1.3: New USB device found, idVendor=413c, idProduct=8156 [ 809.340948] usb 3-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 809.340951] usb 3-1.3: Product: Dell Wireless 370 Bluetooth Mini-card [ 809.340954] usb 3-1.3: Manufacturer: Dell Computer Corp [ 1337.985097] perf: interrupt took too long (2508 > 2500), lowering kernel.perf_event_max_sample_rate to 79500 [ 1387.269440] perf: interrupt took too long (3140 > 3135), lowering kernel.perf_event_max_sample_rate to 63500 [ 1454.553305] perf: interrupt took too long (3927 > 3925), lowering kernel.perf_event_max_sample_rate to 50750 ....
and running
/lib/systemd/systemd-udevd -D
returns below results repeatedly:IMPORT builtin 'hwdb' /lib/udev/rules.d/50-udev-default.rules:14 RUN 'hid2hci --method=dell --devpath=%p' /lib/udev/rules.d/97-hid2hci.rules:11 starting 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0' seq 284188 queued, 'bind' 'usb' seq 284189 queued, 'unbind' 'usb' 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0'(err) 'error: switching device '/sys//devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0' failed.' Process 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0' failed with exit code 1. seq 284184 processed seq 284185 running RUN 'hid2hci --method=dell --devpath=%p' /lib/udev/rules.d/97-hid2hci.rules:11 starting 'hid2hci --method=dell --devpath=/devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0' seq 284190 queued, 'bind' 'usb' seq 284191 queued, 'unbind' 'usb'
My fresh installed Kubuntu is using kernel version
4.15.0-20-generic
and my laptop is a Dell Studio XPS 1640. WiFi is usingbcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu4
driver (downgrading to a previous working driver didn't solve the problem).It's worth mentioning that no USB devices are connected, only a wireless mouse, which makes no problem (disconnecting it doesn't affect the problem). But as mentioned turning off WiFi always make the high CPU load disappear.
-
Firouziam about 6 yearsUnfortunately i had to downgrade to 17.10 because of some conflicts in php and mysql libraries so i can't test the suggestions. But it seems that the proposed solution solves the problem. So i accept it as the correct answer. Thanks for the input.
-
Firouziam almost 6 yearsI reinstalled kubuntu 18.04 to test it out. It works perfectly and now cpu fan is sleeping like a baby! Thanks for the suggestions.
-
user795750 almost 6 yearsThanks. There must have been a bluez update for ubuntu 18.04 this week, as the CPU issue returned, as did this rules file. I'll create the dummy file as you suggest.
-
Neo Elit almost 6 yearsExperienced the same thing on Dell Inspiron. It's affecting Kali Linux Rolling too :(
-
helrich over 5 yearsDisabling bluetooth fixed this issue for my Precision M4400 running OpenSUSE (kernel 4.17.14). Thanks!
-
petkov.np over 5 yearsI can confirm this works partially on a Latitude E5500. The high CPU usage is gone and BT can actually be toggled in the settings. The weird thing is that even though BT is clearly on (blue indicator lights up, and the machine is discoverable), the settings menu insists that BT is off, so no devices can be paired.
-
astrojuanlu over 5 yearsConfirmed this worked for me as well. In my case the error was not related to bluetooth, but some nvidia card thing that was performed repeatedly.
-
Y S Gupta over 5 yearsAs I understand, before all hardware is discovered properly, bind/unbind start executing when no procedures are available and it does not get reinitialized. After stopping and starting, it gets all the procedures in place. Probably, it is booting sequence problem.
-
rootkea about 5 yearsAlright, this fixed the issue. But may I know what exactly adding
ACTION=="add"
does? -
Mekk over 4 yearsI got similar problem after hardware change (physically removed nvidia graphics card). Looks like the trick helped, at least temporarily.
-
Mekk over 4 years… (after card removal systemd-udevd stayed at 100% cpu andkern.log flood with errors like "NVRM: No NVIDIA graphics adapter found!" and few similar emitted in hundreds per second). Looks like the trick offered in this comment helped, at least temporarily.
-
gs_za over 3 yearsOn Ubuntu 20.04, I upgrade the kernel to the latest version and the issue was resolved.
-
chx101 over 3 yearsWhat is this service used for? I'm afraid it might destroy my computer. Is it fine to disable it completely?