03-02-2023, 11:04 AM
(03-02-2023, 08:10 AM)andy.lynx10 Wrote:(03-01-2023, 04:17 PM)fxc Wrote:(03-01-2023, 12:48 PM)andy.lynx10 Wrote: My Pinephone Pro doesn't start and it seems like the bootloader itself is not working.
Whether I press or hold the power button or connect the charging cable or combine the former with holding any of the volume buttons, nothing happens - no vibration, no LED light, no display output.
The battery does not seem to be the problem - it works reliably in my older Pinephone.
I tried flashing a fresh Manjaro image to an SD card and booting it in the PPP by holding the RE button during the startup. Again, no visible response.
The following output from the PPP console is the only response I am able to get. It is shown right after a startup attempt.
U-Boot TPL 2021.10 (Oct 04 2021 - 15:09:26)
sdram_init: LPDDR4 - 50MHz failed!
rk3399_dmc_init DRAM init failed -22
Missing DTB
After this the console remains mute. However, the device seems to be "running" - for lack of a better word - the chipset cover is slightly warm and to replicate the former console output again, the power button needs to be pressed for a few seconds - just like in regular reset.
Could you please help me with an advice? Is the device dead for good? Have anyone encountered a similar behavior?
Best if you write the exact command and tool you used here. Flashing is usually where most of the issues are. Does the button on the backside of the phone underneath the back cover have the label "RE" or "RESET"?
The volume keys are not a shortcut on the PinePhone Pro, unless you flashed Tow-Boot.
I used following dd command to flash the image to the microSD card. In past I used it successfully to flash working OS images to Pinephone/Pinephone Pro/SD:
sudo bash -c "xz -d < Downloads/Manjaro-ARM-phosh-pinephonepro-beta29.img.xz - | dd of=/dev/sdc status=progress"
It finished without errors.
The reset button is labeled "RE".
As far as I know, the phone doesn't have Tow-Boot. That is why I relied on the "RE" button in my attempts to boot it from the SD card.
In my previous post I forgot to mention that the Pinephone Pro worked without issues before with Manjaro+phosh in eMMC. Above problems started sometimes in December 2022. I don't recall doing anything unusual with the phone back then. As far as I know, it either stopped working out of the blue, or after a restart or after a regular system update.
The command and used image looks correct, as well as using the RE button at boot. I suspect there might be an issue with 1) the timing of the RE button or 2) how the microSD card is connected or working.
If you remove the microSD card from the phone and you try to hold RE at boot, the phone should boot into MaskROM mode, which can be verified by connecting the phone to a computer using USB and typing "lsusb" there. If MaskROM mode appears there, it is not an issue with the timing. If U-Boot continues to boot and MaskROM mode does not appear it is an issue with the timing.
If MaskROM mode appears it is an issue with the microSD card or how it is read. In that case I would suggest checking if a microSD card reader pin is missing.