[Nexus 7 Q&A, Help & Troubleshooting] schneidz:
hi, i have a 2012 nexus 7 (4.4.2). the only windows-pc i have is my work laptop which i dont have the admin password for stuff like installing drivers and mounting usb drives. so i am booting it using fedora live-usb.

usb debugging is checked in developer options and usb computer connection is set to mtp. this is what i see when it is connected to the pc while on the home screen:

[liveuser@schneidz nexus]$ uname -a -m -p
Linux schneidz 3.9.5-301.fc19.x86_64 #1 SMP Tue Jun 11 19:39:38 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
[liveuser@schneidz nexus]$ adb devices
List of devices attached
015d30e1223xxxxx	device

[liveuser@schneidz ~]$ sudo tail -f /var/log/messages
...
Mar 16 15:59:57 schneidz systemd[1]: Started Hostname Service.

Mar 16 16:00:45 schneidz kernel: [12741.755058] usb 3-1: new high-speed USB device number 24 using xhci_hcd
Mar 16 16:00:45 schneidz kernel: [12741.783549] usb 3-1: New USB device found, idVendor=18d1, idProduct=4e42
Mar 16 16:00:45 schneidz kernel: [12741.783558] usb 3-1: New USB device strings: Mfr=2, Product=3, SerialNumber=4
[COLOR="Purple"]Mar 16 16:00:45 schneidz kernel: [12741.783560] usb 3-1: Product: Nexus 7
Mar 16 16:00:45 schneidz kernel: [12741.783562] usb 3-1: Manufacturer: asus
Mar 16 16:00:45 schneidz kernel: [12741.783563] usb 3-1: SerialNumber: 015d30e1223xxxxx[/COLOR]
Mar 16 16:00:45 schneidz colord: Device added: sysfs-asus-Nexus_7

but when i reboot the tablet into fastboot mode this is what i see on the pc:

[liveuser@schneidz nexus]$ adb reboot bootloader
[liveuser@schneidz ~]$ sudo tail -f /var/log/messages
Mar 16 16:11:57 schneidz kernel: [13414.076731] usb 3-1: USB disconnect, device number 24
Mar 16 16:11:57 schneidz colord: device removed: sysfs-asus-Nexus_7
Mar 16 16:11:57 schneidz dbus[657]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 16 16:11:57 schneidz dbus[657]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 16 16:11:57 schneidz dbus-daemon[657]: dbus[657]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 16 16:11:57 schneidz dbus-daemon[657]: dbus[657]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 16 16:11:57 schneidz systemd[1]: Starting Hostname Service...
Mar 16 16:11:57 schneidz systemd[1]: Started Hostname Service.
Mar 16 16:11:59 schneidz kernel: [13416.496065] usb 3-1: new high-speed USB device number 25 using xhci_hcd
Mar 16 16:11:59 schneidz kernel: [13416.510152] usb 3-1: New USB device found, idVendor=18d1, idProduct=4e40
Mar 16 16:11:59 schneidz kernel: [13416.510163] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[COLOR="Purple"]Mar 16 16:11:59 schneidz kernel: [13416.510169] usb 3-1: Product: Android
Mar 16 16:11:59 schneidz kernel: [13416.510183] usb 3-1: Manufacturer: Google, Inc
Mar 16 16:11:59 schneidz kernel: [13416.510186] usb 3-1: SerialNumber: 015d30e1223xxxxx[/COLOR]
Mar 16 16:11:59 schneidz mtp-probe: checking bus 3, device 25: "/sys/devices/pci0000:00/0000:00:1c.7/0000:25:00.0/usb3/3-1"
Mar 16 16:11:59 schneidz mtp-probe: bus: 3, device: 25 was not an MTP device
...
[liveuser@schneidz nexus]$ adb devices
List of devices attached

[liveuser@schneidz nexus]$ fastboot oem unlock
< waiting for device >

and it hangs forever. whats weird is that it lists a different product and manufacturer (eventhough the serial numbers match what is on the tablet screen in the fastboot menu -- although product name says grouper). am i doing the wrong method to root this thing (i always thought that nexus devices were the easiest to root) ?