I'm trying to get the second serial port working (/dev/ttyS2) on a PINE64-LTS board.

I created and edited the DTS file as @martinayotte  posted a while back (https://forum.pine64.org/showthread.php?...ight=ttyS2).
But it didn't seem to work. I am using a logic analyzer to monitor the signals and getting NO data. I am using a simple C program to open and write to the port. the write reports its writing data.

in /boot/dtb/allwinner I modified the "-lts.dtb" file
-rw-r--r-- 1 root root 41859 Feb 17  2023 sun50i-a64-pine64.dtb
-rw-rw-r-- 1 root root 41973 Nov  1 13:20 sun50i-a64-pine64-lts.dtb
-rw-r--r-- 1 root root 41909 Feb 17  2023 sun50i-a64-pine64-lts-dtb-backup
-rw-r--r-- 1 root root 41981 Feb 17  2023 sun50i-a64-pine64-plus.dtb


Is there a way to confirm 
a) which DTB file the system is actually using, or
b) that the "okay" on that serial port is enabling the mux mapping for those pins?

Thanks in advance.

I can't get sound to work through HDMI with Manjaro.  To see if it is a hardware or software issue, I put the latest Armbian (23.8 Bookworm Cinnamon) on SD.

The left-side USB-A port doesn't work.  It will provide power, but not recognize anything.  The right-side USB-A still works.  I took a USB stick that has both USB-A and USB-C jacks.  The drive shows up if I stick in the USB-C jack, but not the USB-A.  USB-A seems to work fine with Manjaro, so I doubt it is a hardware issue.

(HDMI also doesn't work.)

Any ideas?

Related threads:

https://forum.pine64.org/showthread.php?tid=8243
https://forum.armbian.com/topic/31416-pr...ebook-pro/

Hello everyone,

I have recently bought second-hand Pinebook Pro. I am using ARM platform for many years already (ASUS Chromebook C201PA with Devuan Linux as daily driver). Pinebook Pro brought my attention because of it's privacy features, great community support, RK3399 onboard (my chromebook has RK3288), case with alloy-magnesium, high resolution display and it looks modern and solid. I have installed Devuan Linux and it worked well with some workarounds (change sleep mode from deep to s2idle, my own custom background daemon for backlight management).

Pinebook Pro recently started having problems with charging. Through USB-C almoast always it is really charging (battery voltage rises by around 0.2-0.3V when plugged in as shown by command "sensors"). However sometimes the voltage does not change even though red LED is on. When I plug in barrell charger battery voltage never rises even though red LED is on. Earlier (one week before) battery used to charge normally through barrell or USB-C. Does anyone have any suggestions what is the problem in hardware? I have tried to perform some measurements for voltages on PCB but I didn't have enough time to investigate deeper and didn't find anything.

It's a shame that so promising device has dumb hardware issues (weak USB-A port unable to power HDD, high-pitch noise, exploding sound from speakers when audio codec goes to sleep mode regardless the volume, extremely slow charging, problems with charging, incorrect battery temperature reporting). I have come up with an idea that if I would not be able to solve charging issue, I will replace the motherboard with modified Orange Pi 3B accompanied by my custom PCB for I/O (USB ports, SD card slot and so on). What do you think about it?

The all important third row of symbols works with a press of Fn and Left Cmd when Mobian is set up for Left Super for alternate characters.

Dear all, I try to regularly check the pine64.org blog page for community updates. Since the ironic august post about you guys keeping us waiting there seems to be no new community updates posted at all. Also the forum pages seem way out of date. What is happening? Is Pine64.org still alive?

Good day folks,
I now use my PPP as a daily device. This replaces my Blackberry Classic as a main device.
The only true requirement is the wired headset which is something most of us do regardless.
Arch Linux Phosh 2023-09-25 version.
To fix the dark theme issue I installed xdg-desktop-portal-gnome
sudo pacman -S xdg-desktop-portal-gnome

To get the Gnome Weather App to work, I copied the user binary file from an older April image of Mobian - /home/mobian/.config/dconf/user .

Maybe this relates to the btrfs file system. But I installed the June image of Mobian instead.

Hello team!

I try to evaluate the platform based on:

• Sopine Baseboard model A
  
• Sopine A64 compute module
  
• Armbian 23.8 Bookworm
  

One of the gold prongs is missing off the board, and it's extremely finicky picking up a sim now or if one is picked up it eventually drops signal.

Currently, there is no cheaper way to get a new modem, is there? Unless I found a cheaper pinephone altogether on ebay used and removed it myself and replaced it.

Basically I had a micro inside a mini and that grove caught hold of the prongs one time and snagged up and out from the board, really wish we could just upgrade the slot all the way from a mini to a standard micro.