Hi Seife, On 19.11.22 at 14:17 Stefan Seyfried wrote:
On 19.11.22 13:24, Johannes Kastl wrote:
I get errors like these when I open the serial console once I notice the hang: Unknown command 'jT)HL' - try 'help' =>Is it possible that there is noise on your serial line?
It is not connected normally to any laptop or machine normally. I.e. the cable is just hanging around, connected to the Pine64 and not plugged in on the other end :-)
So that "hit any key to stop autoboot" in grub gets activated?
That would have been my guess, yes.
Seems like it fails to properly detect that there is no PXE/tftp to boot from and it should really boot from the sdcard. Or something else makes it stop the autoboot and enters 'jT)HL' as command.line noise? Is the serial always connected?
No, not connected.
Before it loads grub, you can interrupt it on the serial console and then will be in U-Boot's shell. Check the u-boot documentation for details, but "printenv" will get you started with the current settings.
I found printenv, but that was just a lot of funny things where I have no clue what they could mean... :-)
On the raspberrypi, the u-boot config can actually be written to the "bootpartition" as u-boot.env file, if you are lucky the pine64 is configured similar (making for an easy way to save your old settings... and restore them in case you screw up...), but it is also possible that U-Boot env is stored in a flash partition of the device. In that case, copy-pasting the output of "printenv" to a safe place is something I'd recommend before you start playing around with it ;-)
Nice, thanks for the hints!
Good luck and have a lot of fun...
Thanks! -- Johannes Kastl Linux Consultant & Trainer Tel.: +49 (0) 151 2372 5802 Mail: [email protected] B1 Systems GmbH Osterfeldstraße 7 / 85088 Vohburg http://www.b1-systems.de GF: Ralph Dehner Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537
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