Hello, I have this problem
I’m using the Lakka-S805.M201C.arm-2.1.img build and on internal I have Libreelec. I tried changing video_fullscreen_x and video_fullscreen_y to 1920x1080 in the config file but it doesn’t work. Also there seems to be a refresh rate problem that’s not visible in the picture. Any suggestions? Thanks
That typically means there monitor is receiving an incompatible signal, either resolution or sync. You can try modifying the config.txt file to use a different resolution, like 720p or 640x480, just to test.
tried with different resolutions and setting video_vsync to false but no luck
Oh whoops, the config.txt thing only works for RPi, which I thought you were using. My mistake.
Since you seem to already know how to edit the retroarch.cfg file, you can try setting your menu_driver to RGUI and see if that makes any difference.
I changed it to RGUI and it improved a bit. The refresh rate problem is not so annoying and I’m now able to change aspect ratios to something more appropriate but I still have multiple smaller screens. I’ll try different settings combinations.
I created the autostart.sh file as suggested in this comment and it work flawlessly.
Thank you so much for your help! 
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Nice glad it worked !
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I have an HD18Q (marked MXQ on top but the PCB is marked HD18Q). Both the MXQ build and HD18Q build result in the same problem OP had. I tried the autostart.sh fix mentioned above, however it didn’t quite fix up my device.
After playing with various settings, I found one that worked great:
echo 720p60hz > /sys/class/display/mode
fbset -fb /dev/fb0 -g 1280 720 1280 1440 32
The HD18Q device I have also doesn’t like running in 1080P mode while Android is running, it also has major issues. Must be something to do with the video chip on it not liking 1080P. When I set it to 720P it works fantastic.
Cheers! 
I realize this is a bit old now but I had the same issue with the blinky quad screen. I am running from an SD card only. My resolution was to reflash the SD card with the image and do the first boot on another HDMI TV set. It booted to 1080p and has been fine since on both TVs.
Please Help. I have the same problem . How to make this file and where to load it?
create the autostart.sh file in /storage/.config/
nano .config/autostart.sh
add this to the file
echo 1080p60hz > /sys/class/display/mode
fbset -fb /dev/fb0 -g 1920 1080 1920 2160 32
restart
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Hi.I have a problem with first boot.I installed lakka 32bit in an usb and at first boot i see this.I believe is the resolution but how i can change it.I tryed via linux pc to find a file to change a value but cant find any file with that name.Any help?
Looks like it can’t handle the xmb menu driver. Edit your retroarch.cfg (it’s on the second partition on the SD card at config/retroarch/retroarch.cfg) and set the following value:
menu_driver = "rgui"
i dont find such a file in any of the 2 partitions!I created one and i will see how it will go.
Sorry, it’s .config/retroarch/retroarch.cfg. I forgot the dot in .config. The file must already exist at this location, if it doesn’t, it’s the wrong path.
If you’re editing the file from your running Lakka machine, the mount point of the second partition is /storage, so the full path would be /storage/.config/retroarch/retroarch.cfg.
To troubleshoot this kind of issue, it’s also helpful to add textmode retroarch=0 to the kernel command line. The file that contains the kernel command line is on the first partition of the SD card (the FAT32 one). This will disable retroarch autostart and drop you to a command line so you can manually edit your config before launching retroarch (type retroarch to start it).
Nope.I didnt find it.I tryed to recreated it but nothing happened.Maybe the problem is that i run it from a usb. Never mind i fixed it.I boot it from another laptop changed some settings and it worked.Now is playing just fine.Thank you very much.
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