Can lakka run with multiboot? Example, lakka and ubuntu?
If you’re planning to run some other operating system, it’s usually easier just to install regular ol’ RetroArch on top of it instead of trying to dual-boot Lakka, which is really focused on providing a simple, turnkey, n00b-friendly appliance rather than flexibility in installation.
I second hunterk’s opinion. Ubuntu is primarily a desktop-based system and would benefit more from RetroArch as an app that you install into it rather than a whole OS (Lakka) installed alongside it. It’s much like trying to use SteamOS as your desktop OS rather than just running the games on Ubuntu itself via Steam.
Indeed, one cause add RetroArch PPAs and run it from Ubuntu. However, is it possible to run Retroarch in KMS mode from Ubuntu for a minimal input latency ? Although I think Lakka compiled the Kernel with a 1000 Hz system timer ?
(I’m asking that because on the very same 5 year-old laptop (i5 intel HD 3000), RetroArch is way faster from a Lakka USB stick than when run from X (Ubuntu). Might be due to compositing being enabled. Also I really want to reduce input lag as much as possible and I heard KMS reduced input lag by 1 fps. (also one can using double instead of triple buffering…)
But maybe KMS plays along with X. It just needs I need a graphics stack compatible with KMS and I would benefit from it even from a regular desktop in X ?
[/dumb_user_gibberish]
OK, my point is moot. Compositing can be disabled from retroarch. It actually doesn’t seem so slow. I’m not even sure it’s slower.
Anyway can confirm there is no performance / input lag impact when running retroarch from a complete distro (with KMS enabled) ? There is nothing particular to do to automagically benefit from optimal performance ? (apart from disabling compositing)
KMS and X are mutually exclusive. KMS “feels” much better to me than in X but I haven’t measured it, so take my opinion with a grain of salt. You can use KMS on a normal Ubuntu installation, you just have to drop out of X first by hitting ctrl+alt+F1. You’ll need to do some udev configuration, as well, to allow your controls to work in that mode: https://github.com/libretro/RetroArch/wiki/Input-drivers-in-Linux-without-Xorg
Ah, thanks for the clarification. That was my first thought (KMS enabled direct access without X) but I got confused meanwhile 
Maybe things will change with Wayland. Anyway, I’ll go the Lakka way for the time being. Will same me the cost of a regular HD/SSD 
I haven’t tried Wayland, myself, but Twinaphex says it feels better than X, somewhere in between KMS and X.