04-29-2019, 01:39 PM
Sorry for the weird thread subject but I'm not able to summarize better this behavior.
Scenario:
Pinebook 14" with default Ubuntu 16.04 (same shipped with the pinebook itself, just updated with apt + pine* scripts for uboot and kernel)
Problem:
Sometimes when powered off it cannot correctly power back on in a useful state since, even if the system is running, the screen is black (may lit up but no X session is there)
How to replicate:
Use the pinebook with AC adapter plugged in (charging), power it off, unplug the AC adapter, power back on --> black screen of death
Use the pinebook with battery, power it off, plug the AC adapter in, power back on --> black screen again
How to "workaround":
Just randomly powering it off and on again with AC adapter in until I get the "pinebook splashscreen" --> at this point boots fine
Tried different OSes:
Yes same thing on a SD card installed OS, or even worse --> with that never gets to a working X session (boots and does all stuff lilke expanding the ext4 partition) but screen just flashes in backlit black for 2 times and never comes along (tried this image as last one: https://osdn.net/projects/manjaro-arm/st...03.img.xz/)
Sometimes I've successfully used a plain vanilla console-based armbian to try to recover a "always in black screen mode" (I discovered that I had ext4 to be checked due to my poweroff/on to restore a usable screen).
Battery state:
It's OK. It can stand many hours of work, and voltages are fine, charges regularly (if we exclude the black screen issue)
Image flashing issues:
I dont' think so, really, checked the sums, flashed with different sdcarcs and different methods (dd with conv=fsync, etcher, name it... I do this stuff on a daily basis so at least here it's not a place to check for possible issues I think).
that said...
Any clues any of you mighty piners?
I suspect my pinebook is just faulty, but maybe I'm getting something wrong or we can discover something potentially useful for others users as well.
Scenario:
Pinebook 14" with default Ubuntu 16.04 (same shipped with the pinebook itself, just updated with apt + pine* scripts for uboot and kernel)
Problem:
Sometimes when powered off it cannot correctly power back on in a useful state since, even if the system is running, the screen is black (may lit up but no X session is there)
How to replicate:
Use the pinebook with AC adapter plugged in (charging), power it off, unplug the AC adapter, power back on --> black screen of death
Use the pinebook with battery, power it off, plug the AC adapter in, power back on --> black screen again
How to "workaround":
Just randomly powering it off and on again with AC adapter in until I get the "pinebook splashscreen" --> at this point boots fine
Tried different OSes:
Yes same thing on a SD card installed OS, or even worse --> with that never gets to a working X session (boots and does all stuff lilke expanding the ext4 partition) but screen just flashes in backlit black for 2 times and never comes along (tried this image as last one: https://osdn.net/projects/manjaro-arm/st...03.img.xz/)
Sometimes I've successfully used a plain vanilla console-based armbian to try to recover a "always in black screen mode" (I discovered that I had ext4 to be checked due to my poweroff/on to restore a usable screen).
Battery state:
It's OK. It can stand many hours of work, and voltages are fine, charges regularly (if we exclude the black screen issue)
Image flashing issues:
I dont' think so, really, checked the sums, flashed with different sdcarcs and different methods (dd with conv=fsync, etcher, name it... I do this stuff on a daily basis so at least here it's not a place to check for possible issues I think).
that said...
Any clues any of you mighty piners?
I suspect my pinebook is just faulty, but maybe I'm getting something wrong or we can discover something potentially useful for others users as well.
