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问题

我最近从Kubuntu 17.10切换到Kubuntu 18.04. 问题是systemd-udevd一直在运行,并且消耗90-100% CPU负载,在检查所有的设备后,我发现居然原因是wifi!打开WiFi后,进程开始运行,CPU负载上升到100% ,但是当我关掉WiFi的时候,它就会变成零!以下是WiFi处于启用状态时的top结果:


 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



运行:strace -p 338 重复执行以下输出:


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="libudev376355312376((3155w3053452612Ge"..., iov_len=40}, {iov_base="ACTION=unbindDEVPATH=/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("x9cx6dx41x2bxb5xf0xf1x9ax32xb3x4ax73xeex04xffx90", 16, GRND_NONBLOCK) = 16


clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=126971116}) = 0


getrandom("xafx35x7ax36x01x32xa6xe6x13x46x4ex22xccx48x77x9b", 16, GRND_NONBLOCK) = 16


getrandom("x48x0bxebxf1xf0x1cxf1x78x89xb7x48xe1x84x38xc9x3c", 16, GRND_NONBLOCK) = 16


getrandom("x11x06x8cx4axebxffx84x8ex0cx09x00x84x62x74xfcxd7", 16, GRND_NONBLOCK) = 16


getrandom("xb5x8ex19x16xadxf6x16x7ex21x66x90x12x2dx43x46x45", 16, GRND_NONBLOCK) = 16


getrandom("x84x7dx47x96x50x36xadx28x06x6exedx33xe0x05x57x20", 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="libudev376355312376((2315w3053452612Ge"..., iov_len=40}, {iov_base="ACTION=bindDEVPATH=/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("x21xcdx52xaex20xa4xe9x0fx2cx3fx68x8ax77x65xfbx22", 16, GRND_NONBLOCK) = 16


getrandom("xb5x1fx43xf7x14x3ex29x6cxddx95xd5x64xecxecx66xca", 16, GRND_NONBLOCK) = 16


clock_gettime(CLOCK_MONOTONIC, {tv_sec=1045, tv_nsec=141295429}) = 0


getrandom("xe7x73x2exc2x5dx71x93x8axd0xf4x5fxd7x91x1fx7bx00", 16, GRND_NONBLOCK) = 16


getrandom("xe4xd4xd3x2cxa2xa1x0cx96x6ex6ax34x9cx50x06x3dx43", 16, GRND_NONBLOCK) = 16


getrandom("xb0x7fxf7x93x1fxa6x6dx2ex01xfbx21x97x4bxe8x85x14", 16, GRND_NONBLOCK) = 16


getrandom("x3fx94x2bx17x01x8fx88x2ex08xa0x9dxd0xefx4fx0ex9a", 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="libudev376355312376((3155w3053452612Ge"..., iov_len=40}, {iov_base="ACTION=unbindDEVPATH=/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


....



运行udevadm monitor重复执行以下操作:


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)


....



运行 journalctl 重复返回:


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


....



运行 dmesg 返回:


[ 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


....



运行 /lib/systemd/systemd-udevd -D 会重复返回以下结果:


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'



我全新安装的Kubuntu使用内核4.15.0-20-generic版本,我的笔记本电脑是Dell Studio XPS 1640,WiFi正在使用 bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu4 驱动程序(降级到以前的驱动程序并没有解决问题)。


回答1

我在戴尔XPS Studio 1340上安装了Ubuntu 18.04 LTS (AMD64),我也遇到了同样的问题,我已经完全通过在BIOS中禁用蓝牙来解决它,我知道这不是一个解决方案,而是一种解决方法,但是它对我有用,因为我很少使用蓝牙。

它看起来像是内核或系统中的一个bug,但是还没有修复:

  • bugzilla.kernel.org上的错误报告
  • Launchpad上的错误报告

回答2

我将Dell Studio 1737从Ubuntu 16.04升级到18.04的进程中发现了类似问题。

ctrl alt f2给我一个终端登录,top显示CPU systemd-udevd在100%。


less /var/log/syslog



显示


Process 'hid2hci --method=dell failed



我发现在删除/lib/udev/rules.d/97-hid2hci.rules (bluez包提供)之后,问题消失了

所以,我的mv有/lib/udev/rules.d/97-hid2hci.rules,重启后sytemd-udevd现在表现得很好。

这只是一个临时解决方案,我不知道这个更改是否会影响到wifi或触摸板(我不使用),


打开synaptic管理器并搜索bluez,删除它。

回答3

这个问题是由于bluez,打开synaptic管理器并搜索bluez,



文章标签:SYS  系统  HIG  Ubuntu  CPU  无线  WIFI  Systemd  

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