When the system froze, did you tried to change into a virtual console (i.e. Ctrl + Alt + F5)? Or tried from a second system to
ssh(1).
As
ralphbsz suggested, check if there are messages regarding the reboots or freeze. Open a xterminal, execute
less /var/log/messages
and scroll through the messages.
Look if there are multiple files stored in
/var/crash.
I don't use KDE, what is a "Five Star Gadget". A web search doesn't return anything.
For the problem, if you didn't find something conclusive in
/var/log/messages, please open a xterminal in KDE, execute following command before plugging in the camcorder:
tail -f /var/log/messages
Press the Enter key a few times to create space for following messages. Plug in the camcorder, copy and post the printed messages.
Execute Ctrl + C to terminate
tail(1).
Execute
mount
, copy and post the printed information.
Don't
umount(8) the camcorder, not from Dolphin or command line, power off the system, then Soplug it out.
Sorry T-Daemon, I mistyped: It is actually File-Stor Gadget. Tiny print on the screen was difficult to read. Also, my keyboard was unresponsive when the system froze.
This is what I got using your instructions:
Oct 12 19:11:45 myfreebsd ntpd[958]: corporation. Support and training for ntp-4 are
Oct 12 19:11:45 myfreebsd ntpd[958]: available at
https://www.nwtime.org/support
Oct 12 19:11:45 myfreebsd ntpd[958]: ----------------------------------------------------
Oct 12 19:11:45 myfreebsd ntpd[959]: leapsecond file ('/var/db/ntpd.leap-seconds.list'): good hash signature
Oct 12 19:11:45 myfreebsd ntpd[959]: leapsecond file ('/var/db/ntpd.leap-seconds.list'): loaded, expire=2022-12-28T00:00:00Z last=2017-01-01T00:00:00Z ofs=37
Oct 12 19:11:46 myfreebsd ntpd[959]: error resolving pool 0.freebsd.pool.ntp.org: Name does not resolve (8)
Oct 12 19:12:30 myfreebsd dbus-daemon[898]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.13" (uid=1001 pid=1122 comm="") interface="org.freedesktop.ConsoleKit.Manager" member="CanSuspendThenHibernate" error name="(unset)" requested_reply="0" destination="org.freedesktop.ConsoleKit" (uid=0 pid=1040 comm="")
Oct 12 19:12:31 myfreebsd pulseaudio[1144]: [(null)] oss-util.c: '/dev/dsp0' doesn't support full duplex
Oct 12 19:12:31 myfreebsd pulseaudio[1144]: [(null)] oss-util.c: '/dev/dsp3' doesn't support full duplex
Oct 12 19:12:53 myfreebsd ntpd[959]: error resolving pool 0.freebsd.pool.ntp.org: Name does not resolve (8)
Oct 12 19:13:48 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_GETMAXLUN set for USB mass storage device Android product 0x1002 (0x18d1:0x1002)
Oct 12 19:13:48 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_TEST_UNIT_READY set for USB mass storage device Android product 0x1002 (0x18d1:0x1002)
Oct 12 19:13:48 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_SYNC_CACHE set for USB mass storage device Android product 0x1002 (0x18d1:0x1002)
Oct 12 19:13:48 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_START_STOP set for USB mass storage device Android product 0x1002 (0x18d1:0x1002)
Oct 12 19:13:48 myfreebsd kernel: ugen0.3: <Android product 0x1002> at usbus0
Oct 12 19:13:48 myfreebsd kernel: umass0 on uhub8
Oct 12 19:13:48 myfreebsd kernel: umass0: <Mass Storage> on usbus0
Oct 12 19:13:48 myfreebsd kernel: umass0: SCSI over Bulk-Only; quirks = 0x4105
Oct 12 19:13:48 myfreebsd kernel: umass0:6:0: Attached to scbus6
Oct 12 19:13:48 myfreebsd kernel: da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
Oct 12 19:13:48 myfreebsd kernel: da0: <Linux File-Stor Gadget 0409> Removable Direct Access SCSI-2 device
Oct 12 19:13:48 myfreebsd kernel: da0: 40.000MB/s transfers
Oct 12 19:13:48 myfreebsd kernel: da0: Attempt to query device size failed: NOT READY, Medium not present
Oct 12 19:13:48 myfreebsd kernel: da0: quirks=0x2<NO_6_BYTE>
Oct 12 19:13:49 myfreebsd kernel: ugen0.3: <Android product 0x1002> at usbus0 (disconnected)
Oct 12 19:13:49 myfreebsd kernel: umass0: at uhub8, port 2, addr 2 (disconnected)
Oct 12 19:13:49 myfreebsd kernel: da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
Oct 12 19:13:49 myfreebsd kernel: da0: <Linux File-Stor Gadget 0409> detached
Oct 12 19:13:49 myfreebsd kernel: (da0:umass-sim0:0:0:0): Periph destroyed
Oct 12 19:13:49 myfreebsd kernel: umass0: detached
Oct 12 19:13:54 myfreebsd kernel: ugen0.3: <Android product 0x0002> at usbus0
Oct 12 19:13:54 myfreebsd webcamd[1190]: webcamd: Cannot find USB device
Oct 12 19:13:59 myfreebsd kernel: ugen0.3: <Android product 0x0002> at usbus0 (disconnected)
Oct 12 19:14:00 myfreebsd ntpd[959]: error resolving pool 0.freebsd.pool.ntp.org: Name does not resolve (8)
Oct 12 19:14:01 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_GETMAXLUN set for USB mass storage device Android product 0x100f (0x18d1:0x100f)
Oct 12 19:14:01 myfreebsd kernel: usb_msc_auto_quirk: UQ_MSC_NO_TEST_UNIT_READY set for USB mass storage device Android product 0x100f (0x18d1:0x100f)
Oct 12 19:14:01 myfreebsd kernel: ugen0.3: <Android product 0x100f> at usbus0
Oct 12 19:14:01 myfreebsd kernel: umass0 on uhub8
Oct 12 19:14:01 myfreebsd kernel: umass0: <Mass Storage> on usbus0
Oct 12 19:14:01 myfreebsd kernel: umass0: SCSI over Bulk-Only; quirks = 0x0101
Oct 12 19:14:01 myfreebsd kernel: umass0:6:0: Attached to scbus6
Oct 12 19:14:01 myfreebsd kernel: da0 at umass-sim0 bus 0 scbus6 target 0 lun 0
Oct 12 19:14:01 myfreebsd kernel: da0: <Linux File-Stor Gadget 0409> Removable Direct Access SCSI-2 device
Oct 12 19:14:01 myfreebsd kernel: da0: 40.000MB/s transfers
Oct 12 19:14:01 myfreebsd kernel: da0: 30436MB (62333952 512 byte sectors)
Oct 12 19:14:01 myfreebsd kernel: da0: quirks=0x2<NO_6_BYTE>