Sergio

The question is closed - the problem was in the Board OrangePi PC Plus itself.

After last upgrade Armbian on OrangePi PC Plus from version ARMBIAN 5.73 stable Ubuntu 16.04.5 LTS 3.4.113-sun8i - 3.4.113-sun8i #16 SMP PREEMPT Thu Jan 31 08:15:34 CET 2019 armv7l armv7l armv7l GNU/Linux to Ubuntu Xenial with Armbian Linux 3.4.113-sun8i - 3.4.113-sun8i #2 SMP PREEMPT Wed May 8 15:09:43 CEST 2019 armv7l armv7l armv7l GNU/Linux the modem on port ttyS3 stopped working. dmesg | grep S3 [ 0.621150] uart3: ttyS3 at MMIO 0x1c28c00 (irq = 35) is a SUNXI ls -la /dev/ttyS3 crw-rw---- 1 root dialout 251, 3 Oct 15 13:03 /dev/ttyS3 script.fex [u

@Igor , can I switch to the nightly build and do the update by apt update&upgrade, or is it necessary to do it manually in a different way?

And how many end users were affected?! ( It is a matter of trust and choice. For me prior to this moment, the orange had some advantage over the raspberry, but now it is gone.

Ok, thank you. I'll try. This is the first such case in my practice. On raspberry this has never happened before.

@Igor , will it help to avoid this in the future if I migrate to Debian GNU / Linux 9 (stretch) 4.19.17-sunxi?

What kind of hack are we talking about?

He asked, he answered) 1. sudo nano /etc/apt/apt.conf.d/02periodic // Enable the update/upgrade script (0=disable) APT::Periodic::Enable "0"; // Do "apt-get update" automatically every n-days (0=disable) APT::Periodic::Update-Package-Lists "0"; // Do "apt-get upgrade --download-only" every n-days (0=disable) APT::Periodic::Download-Upgradeable-Packages "0"; // Run the "unattended-upgrade" security upgrade script // every n-days (0=disabled) // Requires the package "unattended-upgrades" and will write // a log in /var/log/unattended-upgrades APT::Periodic::Unattended-Upgrade "0"; //

How to disable all automatic updates in ARMBIAN 5.38 stable Ubuntu 16.04.4 LTS 3.4.113-sun8i on Orange PC Plus? First, ssh stopped working, then lighttpd and xrdp !!!

Hi! Use the "UsePrivilegeSeparation no" parameter in the sshd_config file or create the required directory "/var/run/sshd" before starting the service by systemd script.

After compiling the three versions of the drivers the problem was resolved by the transfer of the access point in the router in mode "Do not hide SSID"

Didn't work on OrangePi PC with Armbian_5.14_Orangepipc_Debian_jessie_3.4.112 still ( # uname -a Linux orangepipc 3.4.112-sun8i #2 SMP PREEMPT Sun Jun 5 08:38:56 CEST 2016 armv7l GNU/Linux # lsusb Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] Bus 004 Device 001: ID 1d6b:000