The log gets these lines when the camera is connected: > Jul 2 14:47:06 yv kernel: ugen8.2: <Linux 2.6.38.8 with ambarellaudc Nest Cam Setup> at usbus8 > Jul 2 14:47:06 yv kernel: umass1 on uhub8 > Jul 2 14:47:06 yv kernel: umass1: <Mass Storage> on usbus8 > Jul 2 14:47:06 yv kernel: umass1: SCSI over Bulk-Only; quirks = 0x4000 > Jul 2 14:47:06 yv kernel: umass1:7:1: Attached to scbus7 > Jul 2 14:47:06 yv kernel: da4 at umass-sim1 bus 1 scbus7 target 0 lun 0 > Jul 2 14:47:06 yv kernel: da4: <Nest Cam Setup 0001> Removable Direct Access SCSI-2 device > Jul 2 14:47:06 yv kernel: da4: 40.000MB/s transfers > Jul 2 14:47:06 yv kernel: da4: 1MB (2688 512 byte sectors) > Jul 2 14:47:06 yv kernel: da4: quirks=0x2<NO_6_BYTE> > Jul 2 14:47:06 yv kernel: ugen8.2: <Linux 2.6.38.8 with ambarellaudc Nest Cam Setup> at usbus8 (disconnected) > Jul 2 14:47:06 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7f 00 00 01 00 > Jul 2 14:47:06 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 14:47:06 yv kernel: (da4:umass-sim1:1:0:0): Retrying command, 3 more tries remain > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7f 00 00 01 00 > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): Retrying command, 2 more tries remain > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7f 00 00 01 00 > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): Retrying command, 1 more tries remain > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7f 00 00 01 00 > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): Retrying command, 0 more tries remain > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7f 00 00 01 00 > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 14:47:07 yv kernel: (da4:umass-sim1:1:0:0): Error 5, Retries exhausted > ...skipped... > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): Retrying command, 0 more tries remain > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): READ(10). CDB: 28 00 00 00 0a 7e 00 00 01 00 > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): CAM status: CCB request completed with an error > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): Error 5, Retries exhausted > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): got CAM status 0x44 > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): fatal error, failed to attach to device > Jul 2 15:57:27 yv kernel: da4 at umass-sim1 bus 1 scbus7 target 0 lun 0 > Jul 2 15:57:27 yv kernel: da4: <Nest Cam Setup 0001> detached > Jul 2 15:57:27 yv kernel: g_access(961): provider da4 has error 6 set > Jul 2 15:57:27 yv syslogd: last message repeated 2 times > Jul 2 15:57:27 yv kernel: (da4:umass-sim1:1:0:0): Periph destroyed > Jul 2 15:57:27 yv kernel: umass1: detached 12.1-STABLE #0 r359625 > usbconfig dump_curr_config_desc doesn't contain the record for this device. Interestingly, 12.0-STABLE #0 r344209 doesn't fail with this problem. VendorID=0x0525 ProductID=0xa4a5
This device appears to be quirked: % grep -r 0xa4a5 sys/dev/usb/ sys/dev/usb/usbdevs:product NETCHIP POCKETBOOK 0xa4a5 PocketBook % grep -r POCKETBOOK sys/dev/usb/ sys/dev/usb/quirk/usb_quirk.c: USB_QUIRK(NETCHIP, POCKETBOOK, 0x0000, 0xffff, UQ_MSC_NO_SYNC_CACHE), Maybe that's the reason its failing? Else you can try running: usbdump -i usbusX -f Y -s 65536 -vvv To capture all the USB traffic. It will make it more clear when the error happens! --HPS
hps asked for feedback years ago, but there's been none... Close this due to the lack, but please reopen if we can try again.