07-21-2021, 11:01 PM
problem solved, more or less
I searched for uboot in the software update screen and found a manjaro uboot that had a recent date. I backed up the files in /boot and then pressed "reinstall" on the update screen, held my breath and rebooted after the reinstall. Manjaro KDE plasma login screen came up as usual, even though the Armbian SD (focal xfce 5.) was loaded in the micro slot. So, the reinstall did not change the boot order. Disappointing. However, some time later I restarted the Manjaro, and the Armbian loaded! Quite surprised, I fooled around with the Armbian (seemed in good working order, generally as snappy as the KDE) and shut everything down.
After a pause, I started up again and got the usual Manjaro login screen. This time, I did not log in. I pressed the restart choice instead. Armbian loaded again, perfectly. So, no problem. I press the power button and either log in to Manjaro or choose restart and log in to Armbian.
I think that the reinstalled uboot is responsible for this, but I'm not sure.
Thanks for the help. Would have been lost without it.
I should add that when I first got the pbp some combo of downloads and installations bricked everything. I ended up having to flash zeroes to the SPI (took a couple of days) and then installed Manjaro KDE directly to the emmc (using another machine and the usb-emmc stick & Etcher). So, it was a bit out of control, but as far as I know, I ended up with a clean Manjaro KDE on the emmc, a blanked out SPI, and an SD with a clean Armbian Focal xfce 5. When I disabled the emmc, the Armbian loaded perfectly, but it would not load with the emmc enabled. So, I'm guessing that it was the new uboot that made the difference.
I searched for uboot in the software update screen and found a manjaro uboot that had a recent date. I backed up the files in /boot and then pressed "reinstall" on the update screen, held my breath and rebooted after the reinstall. Manjaro KDE plasma login screen came up as usual, even though the Armbian SD (focal xfce 5.) was loaded in the micro slot. So, the reinstall did not change the boot order. Disappointing. However, some time later I restarted the Manjaro, and the Armbian loaded! Quite surprised, I fooled around with the Armbian (seemed in good working order, generally as snappy as the KDE) and shut everything down.
After a pause, I started up again and got the usual Manjaro login screen. This time, I did not log in. I pressed the restart choice instead. Armbian loaded again, perfectly. So, no problem. I press the power button and either log in to Manjaro or choose restart and log in to Armbian.
I think that the reinstalled uboot is responsible for this, but I'm not sure.
Thanks for the help. Would have been lost without it.
I should add that when I first got the pbp some combo of downloads and installations bricked everything. I ended up having to flash zeroes to the SPI (took a couple of days) and then installed Manjaro KDE directly to the emmc (using another machine and the usb-emmc stick & Etcher). So, it was a bit out of control, but as far as I know, I ended up with a clean Manjaro KDE on the emmc, a blanked out SPI, and an SD with a clean Armbian Focal xfce 5. When I disabled the emmc, the Armbian loaded perfectly, but it would not load with the emmc enabled. So, I'm guessing that it was the new uboot that made the difference.