View source for User:Joerg rw/PC syslog of USB enum

this is a typical log on a linux PC, of a N900 plugged into USB in power-off state, clearly showing the three stages of boot: 1) generic immutable Nokia OMAP ROM-bootloader living in CPU ROM (idProduct=0106),  2) NOLO in "update mode" (idProduct=0105), and finally 3) maemo fremantle system in act-dead modus for charging, nevertheless obviously exporting mass "Storage Mode" (idProduct=01c7)

Note that particularly stage1 can't be broken unless either your device already is powered up when plugging it in to PC, or your PC does block USB access ( = you forgot to blacklist *-phonet kernel modules), or USB is broken (jack came off PCB, or cable defect, or you using a hub maybe). Stage1 USB ROM bootloader is also what does coldflashing to restore a broken NOLO (stage2 not showing up in your syslog, after stage1 did), thus establishing "unbrickability" of N900.

<pre>
2014-08-24T04:26:38.349918+02:00 saturn kernel: [4764602.611622] usb 2-1.8: new high-speed USB device number 21 using ehci-pci
2014-08-24T04:26:38.435930+02:00 saturn kernel: [4764602.697798] usb 2-1.8: unable to get BOS descriptor
2014-08-24T04:26:38.437525+02:00 saturn kernel: [4764602.699537] usb 2-1.8: New USB device found, idVendor=0421, idProduct=0106
2014-08-24T04:26:38.437532+02:00 saturn kernel: [4764602.699539] usb 2-1.8: New USB device strings: Mfr=34, Product=38, SerialNumber=0
2014-08-24T04:26:38.437533+02:00 saturn kernel: [4764602.699541] usb 2-1.8: Product: Nokia USB ROM
2014-08-24T04:26:38.437538+02:00 saturn kernel: [4764602.699542] usb 2-1.8: Manufacturer: Nokia
2014-08-24T04:26:38.445659+02:00 saturn mtp-probe: checking bus 2, device 21: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8"
2014-08-24T04:26:38.452261+02:00 saturn mtp-probe: bus: 2, device: 21 was not an MTP device
2014-08-24T04:26:38.939937+02:00 saturn kernel: [4764603.201806] usb 2-1.8: USB disconnect, device number 21
2014-08-24T04:26:39.629931+02:00 saturn kernel: [4764603.890353] usb 2-1.8: new high-speed USB device number 22 using ehci-pci
2014-08-24T04:26:39.802919+02:00 saturn kernel: [4764604.063582] usb 2-1.8: New USB device found, idVendor=0421, idProduct=0105
2014-08-24T04:26:39.802932+02:00 saturn kernel: [4764604.063586] usb 2-1.8: New USB device strings: Mfr=1, Product=2, SerialNumber=5
2014-08-24T04:26:39.802933+02:00 saturn kernel: [4764604.063587] usb 2-1.8: Product: Nokia N900 (Update mode)
2014-08-24T04:26:39.802933+02:00 saturn kernel: [4764604.063588] usb 2-1.8: Manufacturer: Nokia
2014-08-24T04:26:39.802934+02:00 saturn kernel: [4764604.063589] usb 2-1.8: SerialNumber: 4D554D323534333135
2014-08-24T04:26:39.852602+02:00 saturn mtp-probe: checking bus 2, device 22: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8"
2014-08-24T04:26:39.855255+02:00 saturn mtp-probe: bus: 2, device: 22 was not an MTP device
2014-08-24T04:26:41.500225+02:00 saturn kernel: [4764605.759293] usb 2-1.8: USB disconnect, device number 22
2014-08-24T04:26:48.076930+02:00 saturn kernel: [4764612.329271] usb 2-1.8: new high-speed USB device number 23 using ehci-pci
2014-08-24T04:26:48.163932+02:00 saturn kernel: [4764612.416309] usb 2-1.8: New USB device found, idVendor=0421, idProduct=01c7
2014-08-24T04:26:48.163953+02:00 saturn kernel: [4764612.416314] usb 2-1.8: New USB device strings: Mfr=1, Product=2, SerialNumber=3
2014-08-24T04:26:48.163954+02:00 saturn kernel: [4764612.416317] usb 2-1.8: Product: N900 (Storage Mode)
2014-08-24T04:26:48.163955+02:00 saturn kernel: [4764612.416319] usb 2-1.8: Manufacturer: Nokia
2014-08-24T04:26:48.163955+02:00 saturn kernel: [4764612.416321] usb 2-1.8: SerialNumber: 372041756775
2014-08-24T04:26:48.164919+02:00 saturn kernel: [4764612.417675] usb-storage 2-1.8:1.0: USB Mass Storage device detected
2014-08-24T04:26:48.164925+02:00 saturn kernel: [4764612.417763] scsi7 : usb-storage 2-1.8:1.0
2014-08-24T04:26:48.167863+02:00 saturn mtp-probe: checking bus 2, device 23: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.8"
2014-08-24T04:26:48.169450+02:00 saturn mtp-probe: bus: 2, device: 23 was not an MTP device
2014-08-24T04:26:49.167945+02:00 saturn kernel: [4764613.420119] scsi 7:0:0:0: Direct-Access     Nokia    N900              031 PQ: 0 ANSI: 2
2014-08-24T04:26:49.168918+02:00 saturn kernel: [4764613.420598] sd 7:0:0:0: Attached scsi generic sg3 type 0
2014-08-24T04:26:49.169899+02:00 saturn kernel: [4764613.421292] scsi 7:0:0:1: Direct-Access     Nokia    N900              031 PQ: 0 ANSI: 2
2014-08-24T04:26:49.169903+02:00 saturn kernel: [4764613.421635] sd 7:0:0:1: Attached scsi generic sg4 type 0
2014-08-24T04:26:49.174902+02:00 saturn kernel: [4764613.426662] sd 7:0:0:1: [sdd] Attached SCSI removable disk
2014-08-24T04:26:49.176908+02:00 saturn kernel: [4764613.429031] sd 7:0:0:0: [sdc] Attached SCSI removable disk
</pre>