Dark screen on boot up (?) on new Pinebook Pro with Manjaro
Okay, I just have to laugh. I updated the packages on the SD card, rebooted it, and it came up with a dark screen. I can just re-image to the downgraded SD image for the card, and repeat the process, but an SD card image that can actually access the eMMC would be really nice right about now.

More importantly, thuis shows that this pitfall is still in the Manjaro package server, after other people have fallen for it. I am done with Manjaro at this point and will be looking for other OSes, and if they can't fix this, I think the Pinebook community should seriously consider moving to another distro
The Ubuntu Fosse SD image boots the laptop with a working display and lets me access the eMMC.

SO now I just need to know what to put into /etc/ to get the backlight turned on during boot up.
1. Just screen back-light not turning on?
2. Or LED over F2 key doesn't go GREEN from RED?

If case 2, you shold have done two "dd" commands for u-boot configuration after update (before reboot).
(08-18-2020, 04:35 AM)cynist Wrote: 1. Just screen back-light not turning on? 
2. Or LED over F2 key doesn't go GREEN from RED?

If case 2, you shold have done two "dd" commands for u-boot configuration after update (before reboot).
Just the screen backlight.
Boot ubuntu (SD) I assume it works?

edit/ make a file called "bright" (with sudo/su)
cd /sys/class/backlight/edp-backlight
echo 3200 > brightness
(for some reason, space before and after ">" seems to be neccesary)
sudo chmod 777 bright

mount emmc (rootfs, not boot)
sudo cp bright to /mnt/emmc/root (replace emmc with appropriate)

shutdown, remove card
boot with emmc, ctr-alt-F2, do it twice (or more), wait until sure is booted
All this is blind, type carefully
login as root,,password ,, ./bright,, alt-F1 (preceding "./" is essential)

I have looked (grep) in /etc, trying to find where backlight values are stored, no luck
There is a systemd unit, seems dead or part of something else

Possibly Related Threads…
Thread Author Replies Views Last Post
  Bootloader: SD card boot quirks crazyquark 0 41 09-30-2022, 10:20 AM
Last Post: crazyquark
  Webcam not working in Manjaro with Cheese, but works in Armbian petaramesh 1 41 09-30-2022, 10:09 AM
Last Post: crazyquark
  Kali Linux for Pinebook Pro Luke 94 101,329 09-26-2022, 06:46 AM
Last Post: dachalife
  Need help with new pinebook pro magistral 10 569 09-24-2022, 05:14 PM
Last Post: magistral
  when i close my laptop lid the screen doesn't turn on? (debian bullseye based) computerc 3 212 09-23-2022, 08:37 PM
Last Post: computerc
  Tow Boot install help Paulie420 4 105 09-23-2022, 02:38 PM
Last Post: Paulie420
  manjaro on pinebook pro low audio quality over jack alcck 1 89 09-22-2022, 11:31 AM
Last Post: petersen77
  Manjaro update: wxgtk dependency issue Vinay 5 231 09-09-2022, 12:03 PM
Last Post: Vinay
  Fedora Workstation (36) on Pinebook Pro u974615 13 705 09-02-2022, 11:24 AM
Last Post: u974615
  Error trying to update Manjaro software boosterh 5 328 08-31-2022, 10:28 PM
Last Post: shulamy

Forum Jump:

Users browsing this thread: 1 Guest(s)