这种情况每周只发生一两次。当我插入 HTC E9 时，Ubuntu 会冻结。关闭并打开电脑并插入 USB 通常可以解决问题。
我在网上没找到关于这个的资料，下面是相关的日志：
Mar 21 20:16:19 alex-M52AD-M12AD-A-F-K31AD gnome-session[1150]: (nm-applet:1353): nm-applet-WARNING **: Could not find ShellVersion property on org.gnome.Shell after 5 tries
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.692651] usb 1-1: new high-speed USB device number 5 using xhci_hcd
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.822060] usb 1-1: New USB device found, idVendor=0bb4, idProduct=0f25
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.822062] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.822063] usb 1-1: Product: HTC_E9x
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.822064] usb 1-1: Manufacturer: MediaTek
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.822065] usb 1-1: SerialNumber: LC5AVYP05854
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.823204] usb-storage 1-1:1.1: USB Mass Storage device detected
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.823281] scsi host7: usb-storage 1-1:1.1
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.Private.GPhoto2VolumeMonitor[1064]: (process:1398): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD pulseaudio[1241]: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Error.TimedOut: Failed to activate service 'org.bluez': timed out
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: Device 0 (VID=0bb4 and PID=0f25) is a HTC HTC One M8 (MTP).
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: LIBMTP libusb: Attempt to reset device
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: inep: usb_get_endpoint_status(): No such device
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: outep: usb_get_endpoint_status(): No such device
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: libusb_open() failed!: No such device
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: LIBMTP PANIC: Could not init USB on second attempt
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: ** (gvfsd:1177): WARNING **: dbus_mount_reply: Error from org.gtk.vfs.Mountable.mount(): Unable to open MTP device '[usb:001,005]'
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD kernel: [ 63.913308] usb 1-1: USB disconnect, device number 5
Mar 21 20:16:21 alex-M52AD-M12AD-A-F-K31AD gnome-session[1150]: Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.813558] usb 1-1: new high-speed USB device number 6 using xhci_hcd
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD org.gtk.Private.GPhoto2VolumeMonitor[1064]: (process:1398): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.943515] usb 1-1: New USB device found, idVendor=0bb4, idProduct=0f25
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.943518] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.943519] usb 1-1: Product: HTC_E9x
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.943520] usb 1-1: Manufacturer: MediaTek
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.943521] usb 1-1: SerialNumber: LC5AVYP05854
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.949478] usb-storage 1-1:1.1: USB Mass Storage device detected
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD kernel: [ 64.949556] scsi host8: usb-storage 1-1:1.1
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD org.gtk.Private.GPhoto2VolumeMonitor[1064]: message repeated 2 times: [ (process:1398): GVFS-GPhoto2-WARNING **: device (null) has no BUSNUM property, ignoring]
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD colord[937]: (colord:937): Cd-WARNING **: CdMain: failed to emit DeviceAdded: failed to register object: An object is already exported for the interface org.freedesktop.ColorManager.Device at /org/freedesktop/ColorManager/devices/sysfs__null_
Mar 21 20:16:22 alex-M52AD-M12AD-A-F-K31AD org.gtk.vfs.Daemon[1064]: Device 0 (VID=0bb4 and PID=0f25) is a HTC HTC One M8 (MTP).
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 65.946961] scsi 8:0:0:0: CD-ROM HTC Android Phone 0310 PQ: 0 ANSI: 2
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 65.947728] sr 8:0:0:0: [sr1] scsi-1 drive
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 65.947951] sr 8:0:0:0: Attached scsi CD-ROM sr1
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 65.948019] sr 8:0:0:0: Attached scsi generic sg3 type 5
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 66.112918] ISO 9660 Extensions: Microsoft Joliet Level 3
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD kernel: [ 66.117790] ISOFS: changing to secondary root
Mar 21 20:16:23 alex-M52AD-M12AD-A-F-K31AD udisksd[1384]: Mounted /dev/sr1 at /media/alex/HTC Sync Manager on behalf of uid 1000
Mar 21 20:16:24 alex-M52AD-M12AD-A-F-K31AD org.gnome.zeitgeist.Engine[1064]: ** (zeitgeist-datahub:1633): WARNING **: zeitgeist-datahub.vala:229: Unable to get name "org.gnome.zeitgeist.datahub" on the
可能存在什么问题以及如何解决？
（我认为它是在最近的 Ubuntu 更新后开始发生的。）
答案1
我也遇到同样的问题。当我将 USB 从 HTC One M8 插入 Ubuntu 笔记本时，它就卡住了。鼠标没有反应，键盘也没有反应。大约两周前开始出现这种情况。在此之前两年都运行正常。
部分解决方案：当系统启动时，手机已经插入，系统启动正常，并且可以正常访问手机 SD 卡。
Ubuntu 14.04 LTS Linux 内核：3.13.0-83-generic
答案2
更新
我的手机已更新至 Android 6.0.1。笔记本仍在使用 Ubuntu 14.04
今天将手机插入笔记本电脑以检查问题是否仍然存在。笔记本电脑不再冻结。
所以对于我来说问题已经解决了。