Did you check /dev/serial/...
Yes, I did, there's no such directory:(
<blockquote class="Quote">
Repetier wroteUbuntu 14 might be old, check if there is a file named Repetier... in /etc/init.d - if it is no official systemd system it might be the old system.
Yes, I've already found it there. I've changed all users to root, now htop shows that repetierserver is running with root privileges.
this is my lsmod output:
Module Size Used by
pvrsrvkm 442746 0
dc_drmfbdev 16389 1 pvrsrvkm
bcmdhd 598110 0
This is what I get on the usbdev1.20 (old usbdev1.9)
same resulf for "udevadm info -q all -a /dev/usbdev1.20" and "udevadm info -q all -a /dev/bus/usb/001/020"
Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/devices/platform/sunxi-ehci.1/usb1/1-1/1-1.1/1-1.1.1':
KERNEL=="1-1.1.1"
SUBSYSTEM=="usb"
DRIVER=="usb"
ATTR{bDeviceSubClass}=="00"
ATTR{bDeviceProtocol}=="00"
ATTR{devpath}=="1.1.1"
ATTR{idVendor}=="1a86"
ATTR{speed}=="12"
ATTR{bNumInterfaces}==" 1"
ATTR{bConfigurationValue}=="1"
ATTR{bMaxPacketSize0}=="8"
ATTR{busnum}=="1"
ATTR{devnum}=="20"
ATTR{configuration}==""
ATTR{bMaxPower}==" 98mA"
ATTR{authorized}=="1"
ATTR{bmAttributes}=="80"
ATTR{bNumConfigurations}=="1"
ATTR{maxchild}=="0"
ATTR{bcdDevice}=="0264"
ATTR{avoid_reset_quirk}=="0"
ATTR{quirks}=="0x0"
ATTR{version}==" 1.10"
ATTR{urbnum}=="8"
ATTR{removable}=="unknown"
ATTR{idProduct}=="7523"
ATTR{bDeviceClass}=="ff"
ATTR{product}=="USB Serial"
this is output of the lsusb
Bus 001 Device 021: ID 0951:1666 Kingston Technology //my memstick
Bus 001 Device 005: ID 046d:c316 Logitech, Inc. HID-Compliant Keyboard
Bus 001 Device 020: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter //the printer
This are files inside my memstick.
linaro@allwinner:~$ sudo mount /dev/sda1 /media/kingston
linaro@allwinner:~$ ls /media/kingston/
A80_Lubuntu_20141127-2.img Draco AW80_Ubuntu_20150204.img System Volume Information
As I understand it's not the repetier, it's the system issue.
Thank you very much for your help! I really really appreciate it.
Pity that I didn't succeed. I have to print heavy high poly models and repetier installed on my orangepi zero freezes very often. When it doesn't freeze it is able to control only one of my printers (when I print high poly objects), the second one just barely moves and then stays inactive.