borgA Posted February 20, 2019 Share Posted February 20, 2019 (edited) Hi We are using the Tinker Board with RK3288 for a project and we need to be able to have VGA&HDMI Dual Display Function Please tell me how we can do it like on this video: https://youtu.be/iBCp-QhJuAw We are using Linux 4 Thank you Edited February 20, 2019 by borgA Link to comment Share on other sites More sharing options...
JMCC Posted February 20, 2019 Share Posted February 20, 2019 Hello, and welcome to the forums. First of all, a little clarification: "Linux 4" doesn't mean anything; if you want to give us the information about the kernel you are using, then give us the output of "uname -r". Or, even better, give us the complete information about your system, by running "sudo armbianmonitor -u", while connected to the Internet, and pasting here the resulting URL. Now, about your question, the video you reference does not use HDMI+VGA, but HDMI+DSI dual displays. With Armbian, you can use any Raspberry-Pi DSI compatible screen, and attach it to the MIPI-DSI connector in your Tinker Board. You will need the "Default" (4.4.y) kernel for this to work. It has been tested with the official RPi touchscreen, but it may also work with other screens claiming to be compatible, like for example this one. Link to comment Share on other sites More sharing options...
borgA Posted February 20, 2019 Author Share Posted February 20, 2019 Hi, Thanks for your quick reply We have VGA as a LVDS rgb output with dump-vga-bridge and vga-connector drivers activated from dts Currently the HDMI is activated on vopb and LVDS/rgb on vopl We need a way to maybe find /dev/dri/card0 and also /dev/dri/card1 in order to be able to open 2 xorg servers Any ideas? It can be done, see picture attached. Link to comment Share on other sites More sharing options...
borgA Posted February 20, 2019 Author Share Posted February 20, 2019 ASUS tinker board dual touch screen See this video, it can be done Link to comment Share on other sites More sharing options...
TonyMac32 Posted February 21, 2019 Share Posted February 21, 2019 13 hours ago, borgA said: See this video, it can be done I'm still not completely clear on your goal, I've done 2 touchscreens at one time with the Tinker, one on DSI (RPi screen), and a Waveshare 7" HDMI. Now, I won't pretend to know all of the I/O on the Tinker 100%, but where are you physically accessing the LVDS? Link to comment Share on other sites More sharing options...
borgA Posted February 21, 2019 Author Share Posted February 21, 2019 Hi, We are actually using our own hardware but we are using tinker kernel We are accessing the lvds on the lvds interface of the chip. How did you manage it? Is the HDMI activated on vopb and dsi on vopl ? We need a way to have /dev/dri/card0 and also /dev/dri/card1 in order to be able to open 2 xorg servers Link to comment Share on other sites More sharing options...
borgA Posted March 18, 2019 Author Share Posted March 18, 2019 On 2/21/2019 at 6:11 AM, TonyMac32 said: I'm still not completely clear on your goal, I've done 2 touchscreens at one time with the Tinker, one on DSI (RPi screen), and a Waveshare 7" HDMI. Now, I won't pretend to know all of the I/O on the Tinker 100%, but where are you physically accessing the LVDS? Hi Tony Any updates on the dual display that you can help me with? Thanks, Link to comment Share on other sites More sharing options...
Recommended Posts