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# Playing on Linux 🐧
Northstar is officially supported on Linux, it uses compatibility layers like Proton or Wine to launch the game on POSIX systems.
## Installing
### Steam (Proton)
1. Download the latest version of Northstar from the [releases](https://github.com/R2Northstar/Northstar/releases) page
2. Extract all contents of the file to your Titanfall 2 folder ( Right click _Titanfall 2_ > Open _Properties_ > Click _Local Files_ > Click _Browse_ )
3. Rename _Titanfall2.exe_ to anything else ( for example _Titanfall2old.exe_ ), and rename _NorthstarLauncher.exe_ to _Titanfall2.exe_. Alternatively to renaming _NorthstarLauncher.exe_, you can create a symlink to make future Northstar updates easier. This can be done by executing the following in the Titanfall 2 directory:
`ln NorthstarLauncher.exe Titanfall2.exe`
Now Steam will automatically launch Northstar when you hit play. Just launch the game through Steam and you should be greeted with a Northstar welcome message upon entering the main menu.
> **Note:** There is a current bug where the game would sometimes launch vanilla Titanfall 2 instead of Northstar. There is no universal fix for this, but people have reported changing Proton versions to _Proton 5.13_ or _Proton Experimental_ and deleting the Proton prefix folder (`Steam/steamapps/compatdata/1237970/`) could help resolve this issue. Using [Proton GE](https://github.com/GloriousEggroll/proton-ge-custom) has also been reported to resolve the issue.
>
> If you are still suffering from this bug, try running the game through Lutris. The bug doesn't seem to happen there
### Lutris (Wine)
1. If you don't already have the game downloaded, install the game [from here.](https://lutris.net/games/titanfall-2/)
2. Download the latest version of Northstar from the [releases](https://github.com/R2Northstar/Northstar/releases) page
3. Extract all contents of the file to your Titanfall 2 folder
4. **If you have the game installed on Lutris:** right click _Titanfall 2_ > _Configure_ > _Game Options_ > Set _Executable path_ to _NorthstarLauncher.exe_
5. **Otherwise:** click the `+` button in the top left > set the name to whatever and _Runner_ to _Wine_ > click on _Game options_ > set _Executable path_ to _NorthstarLauncher.exe_ then save.
> **If you're migrating from Steam:** Set _Wine prefix_ to `(your Steam directory)/steamapps/compatdata/1237970/pfx/`. This will save you the hassle of having to re-download Origin.
Now just launch the game through Lutris and you should be greeted with a Northstar welcome message upon entering the main menu.
> **Note:** Origin might prompt you to log in and "set an installation folder for future downloads" on first launch. Just do those, close Origin, then launch the game again.
## LatencyFleX
LatencyFleX is a Linux-only input latency reduction alternative to Nvidia Reflex that is supported by Northstar. Currently, LatencyFleX requires manual installation. A full install guide and current releases [can be found on their GitHub](https://github.com/ishitatsuyuki/LatencyFleX).
Northstar only requires the [Vulkan layer](https://github.com/ishitatsuyuki/LatencyFleX#latencyflex-vulkan-layer-essential) and [Wine extensions](https://github.com/ishitatsuyuki/LatencyFleX#latencyflex-wine-extensions-required-for-proton-reflex-integration) steps to be completed.
Once installed, LatencyFleX can be enabled by doing either of the following:
- **Steam:** Add the following to your Titanfall 2 launch options: `"LFX=1 %command%"`
- **Lutris:** Right click on Titanfall 2, click 'Configure', navigate to 'System Preferences' / 'System Options' / 'Environmental Variables', and use the following:
> Key: LFX
Value: 1
Once in-game, LatencyFleX can be toggled off and on using the `"r_latencyflex"` console variable.
While playing with LatencyFleX, **VSync and Adaptive Super Sampling must be disabled**. If you wish to prevent tearing while using LatencyFleX, the following may be added to the end of `ns_startup_args.txt` in the root of your Titanfall 2 install:
> +fps_max_use_refresh 1
## Troubleshooting
> Read Lutris troubleshooting of [common issues with Origin](https://github.com/lutris/docs/blob/master/Origin.md) first.
### Blank console
This problem is caused due to missing fonts on your Titanfall 2 wine prefix, you will need [winetricks](https://github.com/Winetricks/winetricks) or [protontricks](https://github.com/Matoking/protontricks) depending on your installation. Follow these steps to install:
1. Close all Titanfall/Origin processes.
2. If you are using Lutris select your Titanfall 2 installation and click '▲' -> Winetricks. On Proton you can use `protontricks 1237970 --gui`
3. 'Select the default wineprefix' -> 'Install a font' -> Check the packages `lucida` and `arial`.
4. Click OK and wait for everything to install, if done correctly winetricks will popup again.
5. You can now close it and launch the game.
### Crackling sound
Can be fixed by adding [`tsched=0`](https://wiki.archlinux.org/title/PulseAudio/Troubleshooting#Glitches.2C_skips_or_crackling) to `/etc/pulse/default.pa`
### Fullscreen issues
Running the game on fullscreen through Linux might lead to a black screen preventing you from launching the game. Edit your `ns_startup_args.txt` to include `-noborder -window` or edit `"setting.fullscreen"` and `"setting.nowindowborder"` at `<wineprefix>/drive_c/users/<username>/Documents/Respawn/Titanfall2/local/videoconfig.txt` to solve this.
For more info and proposed fixes, refer to [this issue thread on Github](https://github.com/R2Northstar/Northstar/issues/1)
### LatencyFleX issues
Some users have reported issues with enabling LatencyFleX. If you see `"Unable to load LatencyFleX library, LatencyFleX disabled."` in your logs, try adding `latencyflex_wine.dll` to your `bin/x64_retail` folder.
### Game crashes on launch with Cause: Access Violation Data Execution Prevention (DEP) at: 0x00000000
Try running with [ProtonGE](https://github.com/GloriousEggroll/proton-ge-custom/). In particular, `Proton-7.3-GE-1` has so far been found to be reliable in this case. Check this [Github issue comment for a guide](https://github.com/R2Northstar/Northstar/issues/1#issuecomment-1062483190).
### Reducing stuttering (Steam/Proton and Lutris/Wine)
You may feel that the game stutters frequently during the first hour of play. This is normal, it's just DXVK having to compile shaders at draw time due not having a ready state cache. The more you play, the less stuttering there will be in the future.
However if you don't want to wait you can try precompiled DXVK [_state cache_](https://github.com/doitsujin/dxvk#state-cache): [**Titanfall2.dxvk-cache**](https://github.com/begin-theadventure/dxvk-caches/blob/main/dxvk-caches/Titanfall/Titanfall%202/Titanfall2.dxvk-cache.md)
Proton: extract and put it in `/path/to/steamapps/shadercache/1237970/DXVK_state_cache` default is `~/.local/share/..` or next to .exe if shader pre-caching is turned off.
Wine: extract and put it next to game's .exe. Also remember to rename it if the .exe has a different name.
There are also other (not necessary) tweaks as:
_DXVK-_[_async_](https://github.com/Sporif/dxvk-async#improvements):
Wine: download [**dxvk-async**](https://github.com/Sporif/dxvk-async/releases), extract and put it in `~/.local/share/lutris/runtime/dxvk` then type the name of the folder in `▲` -> `Configure` -> `Runner Options` -> `DXVK version`, to enable add `DXVK_ASYNC 1` to `System Options` -> `Environment variables`
Proton: can be used with [**Proton-GE**](https://github.com/GloriousEggroll/proton-ge-custom). Type `DXVK_ASYNC 1 %command%` under `Properties..` -> `LAUNCH OPTIONS`
[_Preventing_](https://github.com/ValveSoftware/Proton/issues/4001#issuecomment-647014231) _Origin from writing certain files_:
Path:
Proton: `/path/to/steamapps/compatdata/1237970/pfx/drive_c/users/steamuser/Application Data/Origin` default is `~/.local/share/..`
Wine: `/path/to/drive_c/users/<username>/AppData/Roaming/Origin`
Access can be restricted using a file manager or terminal:
`chmod -R 555` -> access only
`chmod -R 755` -> access + save
It's also possible to create command aliases to type something short, such as tfoff/tfon.
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