Parallella Community

Unfortunately, my results are not 100% reproducible. That is, the workaround does not always seem to work.

My OTG adapter is about 6" in length from end to end. It's this guy here: My standard Micro USB cable is probably a good meter (3 feet) or so, it's the one that came with the Nexus 5.

This morning I tried to boot with the OTG adapter in, no dice. I powered the Parallella off, tried the workaround and it did not work. Interestingly enough, I unplugged both USB and HDMI, power-cycled and it worked. I then plugged HDMI and the OTG adapter back in, they both worked (though I had to soft reboot for HDMI to show properly). It seemed to work now.

I am not sure really, though it is quite mind boggling. It seems like a timing issue in the kernel/boot sequence or something like that.

Please vote on the operational state of USB on your board:

viewtopic.php?f=50&t=1483

Hopefully it will help expose the extent of the problem. Thank you!

Why did someone not fix this for the new release of boards?
Have just received 2 boards which am running Yocto on.
Both boards have problem to initiate the USB 0, but the trick with long cable fixed it temporary.
Any solution to fix it permanent?