I’ve updated my Jetson Nano a couple of times in the past few months with “apt-get upgrade” using the Nano without any monitor attached.
Well, I just attached a monitor and all I get is a blank screen. There is no Nvidia logo during boot. There is no desktop after boot (I have auto-login enabled). I just have a black screen. My monitor is turning on when the Jetson Nano turns on so clearly there is a signal.
I am able to ssh login over WiFi so I looked at dmesg and I see this:
[ 227.014501] tegradc tegradc.0: unblank
[ 227.094304] tegradc tegradc.0: blank - powerdown
[ 227.574624] tegradc tegradc.0: blank - normal
[ 227.896835] tegradc tegradc.0: unblank
[ 227.896848] tegradc tegradc.0: update windows ret = -14
[ 227.896851] tegradc tegradc.0: sync windows ret = -14
Please can someone help me get my Displayport video output working again?
(I should also mention that the monitor works fine when I plug it into my laptop and the monitor used to work fine with the Jetson Nano a few months ago. I am using the same 5V 4A power supply I used since the start.)