没什么大不了的，除了深夜我忘记调低音量时吓到我了...偶尔，我的 linux mint 会发出卸载和安装 USB 驱动器时发出的声音，就像我拔下并插入 USB 驱动器一样。为什么？
我的LM18.3；
sbh@sbh ~ $ inxi -Fx
System: Host: sbh Kernel: 4.13.0-31-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.6.7 (Gtk 3.18.9-1ubuntu3.3) Distro: Linux Mint 18.3 Sylvia
Machine: System: Apple (portable) product: MacBookPro11 3 v: 1.0
Mobo: Apple model: Mac-2BD1B31983FE1663 v: MacBookPro11 3
Bios: Apple v: MBP112.88Z.0142.B00.1708080655 date: 08/08/2017
CPU: Quad core Intel Core i7-4980HQ (-HT-MCP-) cache: 6144 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 22349
clock speeds: max: 4000 MHz 1: 2793 MHz 2: 2793 MHz 3: 2793 MHz 4: 2793 MHz 5: 2793 MHz 6: 2793 MHz
7: 2793 MHz 8: 2793 MHz
Graphics: Card: NVIDIA GK107M [GeForce GT 750M Mac Edition] bus-ID: 01:00.0
Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
Resolution: [email protected]
GLX Renderer: GeForce GT 750M/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 384.111 Direct Rendering: Yes
Audio: Card-1 Intel 8 Series/C220 Series High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Card-2 NVIDIA GK107 HDMI Audio Controller driver: snd_hda_intel bus-ID: 01:00.1
Sound: Advanced Linux Sound Architecture v: k4.13.0-31-generic
Network: Card: Broadcom BCM4360 802.11ac Wireless Network Adapter driver: wl bus-ID: 03:00.0
IF: wlp3s0 state: up mac: 24:a0:74:f2:c5:4a
Drives: HDD Total Size: 1000.6GB (20.4% used) ID-1: /dev/sda model: APPLE_SSD_SM1024 size: 1000.6GB
Partition: ID-1: / size: 202G used: 162G (85%) fs: ext4 dev: /dev/sda6
ID-2: swap-1 size: 26.21GB used: 23.82GB (91%) fs: swap dev: /dev/sda7
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 63.0C mobo: N/A gpu: 0.0:62C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 336 Uptime: 4 days Memory: 10666.5/15949.3MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35
我快速检查了最后修改的文件，结果确实/var/log/如此；修改时间大约发生在 21:47 到 21:48 之间......
-rw-r----- 1 syslog adm 622976 Feb 19 21:47 ufw.log
-rw-r----- 1 syslog adm 135663 Feb 19 21:47 syslog
-rw-r----- 1 syslog adm 2173452 Feb 19 21:47 kern.log
-rw-r----- 1 syslog adm 101064 Feb 19 21:47 auth.log
-rw-r--r-- 1 root root 32388 Feb 19 21:48 Xorg.0.log
-rw-r--r-- 1 root root 234201 Feb 19 21:48 dpkg.log
我不知道该搜索什么，所以我尝试了，
sbh@sbh /var/log $ sudo grep -E -rnw '/var/log/' -e 'Feb 19.*21:47|21:47.*Feb 19'
/var/log/syslog:1097:Feb 19 21:47:26 sbh kernel: [391857.805131] usb 2-4: Disable of device-initiated U1 failed.
/var/log/syslog:1098:Feb 19 21:47:32 sbh kernel: [391862.925412] usb 2-4: Disable of device-initiated U2 failed.
/var/log/syslog:1099:Feb 19 21:47:37 sbh kernel: [391868.045638] usb 2-4: usb_reset_and_verify_device Failed to disable LTM
/var/log/syslog:1100:Feb 19 21:47:37 sbh kernel: [391868.045638] .
/var/log/syslog:1101:Feb 19 21:47:37 sbh kernel: [391868.045661] xhci_hcd 0000:00:14.0: Cannot set link state.
/var/log/syslog:1102:Feb 19 21:47:37 sbh kernel: [391868.045719] usb usb2-port4: cannot disable (err = -32)
/var/log/syslog:1103:Feb 19 21:47:37 sbh kernel: [391868.225537] usb 2-4: USB disconnect, device number 10
/var/log/syslog:1104:Feb 19 21:47:37 sbh kernel: [391868.589683] usb 2-4: new SuperSpeed USB device number 11 using xhci_hcd
/var/log/syslog:1105:Feb 19 21:47:37 sbh kernel: [391868.615549] usb 2-4: New USB device found, idVendor=05ac, idProduct=8406
/var/log/syslog:1106:Feb 19 21:47:37 sbh kernel: [391868.615557] usb 2-4: New USB device strings: Mfr=3, Product=4, SerialNumber=5
/var/log/syslog:1107:Feb 19 21:47:37 sbh kernel: [391868.615562] usb 2-4: Product: Card Reader
/var/log/syslog:1108:Feb 19 21:47:37 sbh kernel: [391868.615566] usb 2-4: Manufacturer: Apple
/var/log/syslog:1109:Feb 19 21:47:37 sbh kernel: [391868.615570] usb 2-4: SerialNumber: 000000000820
/var/log/syslog:1110:Feb 19 21:47:37 sbh kernel: [391868.630863] usb-storage 2-4:1.0: USB Mass Storage device detected
/var/log/syslog:1111:Feb 19 21:47:37 sbh kernel: [391868.631437] scsi host1: usb-storage 2-4:1.0
/var/log/syslog:1112:Feb 19 21:47:37 sbh kernel: [391868.744877] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/syslog:1113:Feb 19 21:47:37 sbh kernel: [391868.744893] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/syslog:1114:Feb 19 21:47:37 sbh kernel: [391868.755219] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/syslog:1115:Feb 19 21:47:37 sbh kernel: [391868.755239] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/syslog:1116:Feb 19 21:47:37 sbh mtp-probe: checking bus 2, device 11: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-4"
/var/log/syslog:1117:Feb 19 21:47:37 sbh mtp-probe: bus: 2, device: 11 was not an MTP device
/var/log/syslog:1118:Feb 19 21:47:38 sbh kernel: [391869.647749] scsi 1:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
/var/log/syslog:1119:Feb 19 21:47:38 sbh kernel: [391869.648653] sd 1:0:0:0: Attached scsi generic sg1 type 0
/var/log/syslog:1120:Feb 19 21:47:38 sbh kernel: [391869.654623] sd 1:0:0:0: [sdb] Attached SCSI removable disk
/var/log/kern.log:11364:Feb 19 21:47:26 sbh kernel: [391857.805131] usb 2-4: Disable of device-initiated U1 failed.
/var/log/kern.log:11365:Feb 19 21:47:32 sbh kernel: [391862.925412] usb 2-4: Disable of device-initiated U2 failed.
/var/log/kern.log:11366:Feb 19 21:47:37 sbh kernel: [391868.045638] usb 2-4: usb_reset_and_verify_device Failed to disable LTM
/var/log/kern.log:11367:Feb 19 21:47:37 sbh kernel: [391868.045638] .
/var/log/kern.log:11368:Feb 19 21:47:37 sbh kernel: [391868.045661] xhci_hcd 0000:00:14.0: Cannot set link state.
/var/log/kern.log:11369:Feb 19 21:47:37 sbh kernel: [391868.045719] usb usb2-port4: cannot disable (err = -32)
/var/log/kern.log:11370:Feb 19 21:47:37 sbh kernel: [391868.225537] usb 2-4: USB disconnect, device number 10
/var/log/kern.log:11371:Feb 19 21:47:37 sbh kernel: [391868.589683] usb 2-4: new SuperSpeed USB device number 11 using xhci_hcd
/var/log/kern.log:11372:Feb 19 21:47:37 sbh kernel: [391868.615549] usb 2-4: New USB device found, idVendor=05ac, idProduct=8406
/var/log/kern.log:11373:Feb 19 21:47:37 sbh kernel: [391868.615557] usb 2-4: New USB device strings: Mfr=3, Product=4, SerialNumber=5
/var/log/kern.log:11374:Feb 19 21:47:37 sbh kernel: [391868.615562] usb 2-4: Product: Card Reader
/var/log/kern.log:11375:Feb 19 21:47:37 sbh kernel: [391868.615566] usb 2-4: Manufacturer: Apple
/var/log/kern.log:11376:Feb 19 21:47:37 sbh kernel: [391868.615570] usb 2-4: SerialNumber: 000000000820
/var/log/kern.log:11377:Feb 19 21:47:37 sbh kernel: [391868.630863] usb-storage 2-4:1.0: USB Mass Storage device detected
/var/log/kern.log:11378:Feb 19 21:47:37 sbh kernel: [391868.631437] scsi host1: usb-storage 2-4:1.0
/var/log/kern.log:11379:Feb 19 21:47:37 sbh kernel: [391868.744877] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/kern.log:11380:Feb 19 21:47:37 sbh kernel: [391868.744893] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/kern.log:11381:Feb 19 21:47:37 sbh kernel: [391868.755219] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/kern.log:11382:Feb 19 21:47:37 sbh kernel: [391868.755239] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/kern.log:11383:Feb 19 21:47:38 sbh kernel: [391869.647749] scsi 1:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
/var/log/kern.log:11384:Feb 19 21:47:38 sbh kernel: [391869.648653] sd 1:0:0:0: Attached scsi generic sg1 type 0
/var/log/kern.log:11385:Feb 19 21:47:38 sbh kernel: [391869.654623] sd 1:0:0:0: [sdb] Attached SCSI removable disk
/var/log/ufw.log:2712:Feb 19 21:47:37 sbh kernel: [391868.744877] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/ufw.log:2713:Feb 19 21:47:37 sbh kernel: [391868.744893] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/ufw.log:2714:Feb 19 21:47:37 sbh kernel: [391868.755219] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
/var/log/ufw.log:2715:Feb 19 21:47:37 sbh kernel: [391868.755239] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
/var/log/auth.log:794:Feb 19 21:47:56 sbh polkitd(authority=local): Operator of unix-session:c2 successfully authenticated as unix-user:sbh to gain ONE-SHOT authorization for action com.ubuntu.pkexec.synaptic for unix-process:27023:39186586 [/bin/sh -c pkexec /usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 83886265 -o Synaptic::closeZvt=true --set-selections-file /tmp/tmppzubgw2g] (owned by unix-user:sbh)
/var/log/auth.log:795:Feb 19 21:47:56 sbh pkexec: pam_unix(polkit-1:session): session opened for user root by (uid=1000)
/var/log/auth.log:796:Feb 19 21:47:56 sbh pkexec: pam_systemd(polkit-1:session): Cannot create session: Already running in a session
/var/log/auth.log:797:Feb 19 21:47:56 sbh pkexec: pam_ck_connector(polkit-1:session): cannot determine display-device
/var/log/auth.log:798:Feb 19 21:47:56 sbh pkexec[27024]: sbh: Executing command [USER=root] [TTY=unknown] [CWD=/home/sbh] [COMMAND=/usr/sbin/synaptic --hide-main-window --non-interactive --parent-window-id 83886265 -o Synaptic::closeZvt=true --set-selections-file /tmp/tmppzubgw2g]
/var/log/auth.log:800:Feb 19 21:59:07 sbh sudo: sbh : TTY=pts/7 ; PWD=/var/log ; USER=root ; COMMAND=/bin/grep -rnw . -e 21:47
/var/log/auth.log:803:Feb 19 22:03:08 sbh sudo: sbh : TTY=pts/7 ; PWD=/var/log ; USER=root ; COMMAND=/bin/grep -E -rnw /var/log/ -e Feb 19.*21:47|21:47.*Feb 19
和，
sbh@sbh /var/log $ sudo grep -E -rnw '/var/log/' -e 'Feb 19.*21:48|21:48.*Feb 19'
/var/log/auth.log:806:Feb 19 22:05:30 sbh sudo: sbh : TTY=pts/7 ; PWD=/var/log ; USER=root ; COMMAND=/bin/grep -E -rnw /var/log/ -e Feb 19.*21:48|21:48.*Feb 19
kern.log 提到 USB 断开连接，然后发现 Apple 连接... 也在 37 秒的 syslog 中。还有一个mtp-probe？我发现udevadm monitor只有在运行时才有效。我想知道这是否是“mount”和“unmount”声音出现的时候。但有人能向我解释发生了什么吗？以及如何修复它？
我的udev版本是 229-4ubuntu4 和 229-4ubuntu21.1 - 不确定为什么apt-cache show udev列出两个...journalctl发布类似的内容，但如果有帮助，我可以发布它。
我有 libmtp9 和 libmtp-common 如果有帮助的话......
短暂性脑缺血发作
编辑
今天又发生了两次，所以两天内发生了三次；自从我注意到它以来......
这个 OP 有类似的问题，但在 MBPretina 上，我不确定它与 MBP 有何关系——我把 dev8 的 debian 中的 Grub2 放在那里（EFI），它可以正常工作，并且仍然可以正常工作，在这些声音开始出现之前很久就成功了。https://askubuntu.com/questions/332927/troubles-connecting-usb3-drive另外，我确实正在进行一个过程，其中有很多文字需要交换......
我从来没有插拔过 USB 设备（外部）。我的分区格式如下：
磁盘管理：
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EFI System Partition
2 409640 391759839 186.6 GiB AF00 SSD
3 391759840 393029375 619.9 MiB AB00 Recovery HD
4 393029632 802629631 195.3 GiB 0700 BOOTCAMP
5 802629632 1048127487 117.1 GiB AF00 Apple_HFS_Untitled_2
6 1048389632 1478469631 205.1 GiB 0700 Basic data partition
7 1478469632 1529669631 24.4 GiB 0700 Basic data partition
8 1529669632 1954207743 202.4 GiB 0700 Astra
也许对文件系统类型更有帮助：
BLKIDD：
/dev/sda1: LABEL="EFI" UUID="67E3-17ED" TYPE="vfat"
/dev/sda2: UUID="51a8ec6c-2dbe-304d-ae7d-7529d82c0aed" TYPE="hfsplus"
/dev/sda3: UUID="6aac3d42-0f3f-3c04-95e5-8ab6b465df42" TYPE="hfsplus"
/dev/sda4: LABEL="BOOTCAMP" UUID="DA327232327213AB" TYPE="ntfs"
/dev/sda5: UUID="047ec79c-1f4d-3c73-b1a2-f3ccb7a7205f" TYPE="hfsplus"
/dev/sda6: UUID="c403a9af-f7a4-4e3f-981b-33daf472b68f" TYPE="ext4"
/dev/sda7: UUID="5348c3ca-7f95-460c-b242-fa1445480d37" TYPE="swap"
/dev/sda8: UUID="f49b3281-a94c-498f-a734-4debe70368a3" TYPE="ext4"
我已经hfsprogs安装了，以及ntfs-3g，但没有ntfs-3g-dev
if any of this helps:
dev2 contains The MacOS
dev2 contains mac osx stuff
dev3 contains mac osx stuff
dev4 contains windows 10
dev5 contains swap
dev6 contains LM18.3
dev8 contains debian
以下是最新的：
内核日志：
Feb 20 07:59:44 sbh kernel: [428596.673690] usb 2-4: Disable of device-initiated U1 failed.
Feb 20 07:59:49 sbh kernel: [428601.793902] usb 2-4: Disable of device-initiated U2 failed.
Feb 20 07:59:54 sbh kernel: [428606.914169] usb 2-4: usb_reset_and_verify_device Failed to disable LTM
Feb 20 07:59:54 sbh kernel: [428606.914169] .
Feb 20 07:59:54 sbh kernel: [428606.914193] xhci_hcd 0000:00:14.0: Cannot set link state.
Feb 20 07:59:54 sbh kernel: [428606.914256] usb usb2-port4: cannot disable (err = -32)
Feb 20 07:59:54 sbh kernel: [428607.094090] usb 2-4: USB disconnect, device number 14
Feb 20 07:59:54 sbh kernel: [428607.378224] usb 2-4: new SuperSpeed USB device number 15 using xhci_hcd
Feb 20 07:59:54 sbh kernel: [428607.400017] usb 2-4: New USB device found, idVendor=05ac, idProduct=8406
Feb 20 07:59:54 sbh kernel: [428607.400023] usb 2-4: New USB device strings: Mfr=3, Product=4, SerialNumber=5
Feb 20 07:59:54 sbh kernel: [428607.400027] usb 2-4: Product: Card Reader
Feb 20 07:59:54 sbh kernel: [428607.400030] usb 2-4: Manufacturer: Apple
Feb 20 07:59:54 sbh kernel: [428607.400032] usb 2-4: SerialNumber: 000000000820
Feb 20 07:59:54 sbh kernel: [428607.402669] usb-storage 2-4:1.0: USB Mass Storage device detected
Feb 20 07:59:54 sbh kernel: [428607.402906] scsi host1: usb-storage 2-4:1.0
Feb 20 07:59:54 sbh kernel: [428607.449028] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.449071] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.459427] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.459488] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Feb 20 07:59:55 sbh kernel: [428608.420372] scsi 1:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
Feb 20 07:59:55 sbh kernel: [428608.421353] sd 1:0:0:0: Attached scsi generic sg1 type 0
Feb 20 07:59:55 sbh kernel: [428608.422926] sd 1:0:0:0: [sdb] Attached SCSI removable disk
系统日志：
Feb 20 07:59:44 sbh kernel: [428596.673690] usb 2-4: Disable of device-initiated U1 failed.
Feb 20 07:59:49 sbh kernel: [428601.793902] usb 2-4: Disable of device-initiated U2 failed.
Feb 20 07:59:54 sbh kernel: [428606.914169] usb 2-4: usb_reset_and_verify_device Failed to disable LTM
Feb 20 07:59:54 sbh kernel: [428606.914169] .
Feb 20 07:59:54 sbh kernel: [428606.914193] xhci_hcd 0000:00:14.0: Cannot set link state.
Feb 20 07:59:54 sbh kernel: [428606.914256] usb usb2-port4: cannot disable (err = -32)
Feb 20 07:59:54 sbh kernel: [428607.094090] usb 2-4: USB disconnect, device number 14
Feb 20 07:59:54 sbh kernel: [428607.378224] usb 2-4: new SuperSpeed USB device number 15 using xhci_hcd
Feb 20 07:59:54 sbh kernel: [428607.400017] usb 2-4: New USB device found, idVendor=05ac, idProduct=8406
Feb 20 07:59:54 sbh kernel: [428607.400023] usb 2-4: New USB device strings: Mfr=3, Product=4, SerialNumber=5
Feb 20 07:59:54 sbh kernel: [428607.400027] usb 2-4: Product: Card Reader
Feb 20 07:59:54 sbh kernel: [428607.400030] usb 2-4: Manufacturer: Apple
Feb 20 07:59:54 sbh kernel: [428607.400032] usb 2-4: SerialNumber: 000000000820
Feb 20 07:59:54 sbh kernel: [428607.402669] usb-storage 2-4:1.0: USB Mass Storage device detected
Feb 20 07:59:54 sbh kernel: [428607.402906] scsi host1: usb-storage 2-4:1.0
Feb 20 07:59:54 sbh kernel: [428607.449028] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.449071] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Feb 20 07:59:54 sbh mtp-probe: checking bus 2, device 15: "/sys/devices/pci0000:00/0000:00:14.0/usb2/2-4"
Feb 20 07:59:54 sbh mtp-probe: bus: 2, device: 15 was not an MTP device
Feb 20 07:59:54 sbh kernel: [428607.459427] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.459488] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Feb 20 07:59:55 sbh kernel: [428608.420372] scsi 1:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
Feb 20 07:59:55 sbh kernel: [428608.421353] sd 1:0:0:0: Attached scsi generic sg1 type 0
Feb 20 07:59:55 sbh kernel: [428608.422926] sd 1:0:0:0: [sdb] Attached SCSI removable disk
ufw.log：（我的防火墙已打开 - 设置为拒绝传入并允许传出）
Feb 20 07:59:54 sbh kernel: [428607.449028] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.449071] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.459427] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=144422 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Feb 20 07:59:54 sbh kernel: [428607.459488] [UFW BLOCK] IN=wlp3s0 OUT= MAC= SRC=fe80:0000:0000:0000:dcaa:37a0:7722:c1e8 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=782999 PROTO=UDP SPT=8612 DPT=8610 LEN=24
这 https://bbs.archlinux.org/viewtopic.php?id=233144似乎表明存在时间问题，但仍未解决 - 我认为他尝试了不同的内核...我可以更新一些小修订 - 从 4.13.0-31.35 到 4.13.0-32.35... 似乎仍然有一些与“有缺陷的” xhci_hcd 驱动程序有关的东西，但使用 ehci_hcd 的“更好”驱动程序的可能性不会保持向后兼容性 -https://bbs.archlinux.org/viewtopic.php?id=186617我将尝试更新的内核...
答案1
您描述的症状表明您的特定链接“伙伴”、大容量存储超高速“可移动磁盘”和 USB 3.x 主机端口在 LPM、链接电源管理方面存在问题。
USB 3.x 框架中的链路电源管理包括 U0（正常活动状态）和三个级别（U1、U2 和 U3）的空闲状态，这些状态具有不同的退出延迟级别。LPM 是特定链路的本地功能，一旦通过软件启用/配置，进入和退出状态将在硬件级别进行管理，但 U3 除外，它可以通过主机端口强制执行（相当于较旧的 USB SUSPEND 状态）。
从日志中可以看出，该设备未能响应 LPM 控制命令。不确定 Linux 是否如此，但 Microsoft 有以下关于 LPM 的文章，USB 3.0 硬件中的链路电源管理，并关注链接，特别是这个关于U1/U2问题. MS 论文中的关键字应该可以帮助您找到相应的 Linux 文章（如果有的话）。
LPM 具有相当复杂的退出协议，每次退出时都需要重新进行链接训练，并且历史上受到硬件（和软件/配置）错误的困扰，因此在采用 USB 3.x 标准的前 3-4 年，这组功能在大多数 USB 设备中被禁用。