I have nvidia jetson nano 4BG 16eMMc, the micro USB port of the Nvidia Jetson was working at begening and everything was okay. Today, when I tried to change the os of the nvidia jetson using VM firmware ubuntu 18.04 — sdk manager, the connection failed. I tried different PCs to connect the nviida jetson thorugh micro USB port, but other PCs could not detect it.
I am wondering if the problem is related to hardware or what?
i would be grateful if you help me.
thanks
What kind of device mode is tested here? A device mode after kernel boot or just recovery mode? Or you are not sure what I am talking about?
Sorry I didnot understand your point. I am using sdk manager and automatic mode setup to flash the os of jetson. please explain me more. thanks
When the board boots into kernel, it will enable usb device mode. In this situation, your sdkmanager on your host PC can detect it.
If your board cannot boot, above device mode won’t happen. It means your sdkmanager won’t detect the board.
Under such case, you need to use jumper on the pin of your carrier board to trigger “recovery mode” so that sdkmanager can flash the board.
And recovery mode is actually the 1st thing you need to learn when you get a jetson device…
I will add that if you have a micro-B to full sized type-A USB cable from NVIDIA, it is high quality and should never be a problem. On the other hand, if you get a “charger cable”, then about two out of three of them fail for data. Most charger cables have very low quality data lines, typically one or two strands of 32 gauge or 34 gauge copper. I expect those cables to fail more often than succeed.
VMs also I expect to fail. Sometimes you get lucky, but unless you are good with your VM setup, and can guarantee the recovery mode Jetson is always visible, including after a disconnect and reconnect, then the VM will fail. You are better off dual booting with a native Ubuntu (for a Nano, Ubuntu 18.04). VMs only act like a full computer if the I/O is set up to do so, otherwise they live in their own micro universe (I’m reminded of a “Star Trek the Next Generation” episode of being caught in a warp bubble outside the universe :) ).
EDIT: I wish the forum had smiley faces!