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Unity3D Releases Unity 4.5 & With It Comes Major Linux Fixes

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I really hope a lot of Unity developers upgrade to Unity 4.5 as it offers up some heavily needed fixes to the engine for Linux builds of games. Unity is the engine behind games like Wasteland2, Rochard, Verdun, Rust and many more.

The biggest annoyance for Linux gamers thanks to Unity 4.5 looks to be finally over, with the fixes list highlighted below we can finally bid rest to having the mouse look locked towards the sky when full-screen in a lot of Unity-based games.

Linux specific engine fixes
Linux: Fixed "jump" when initially locking mouse cursor.
Linux: Fixed DllImport of system libraries.
Linux: Fixed eventual runaway CPU usage on headless players.
Linux: Fixed non-ASCII text input.
Linux: Fixed OnApplicationFocus.
Linux: Fixed Ping implementation.
Linux: Fixed switching to fullscreen mode for window managers that do this in two steps.
Linux: Fixed translucent hardware cursors.
Linux: Report screen size as 640x480 in headless player (avoids crashes when user projects divide by screen size).
Linux/Windows: Don't unload asset bundles when their assets may need to be reloaded.
Linux: Query webcam for dimensions when user doesn't specify them.
Linux: Worked around drivers grossly underreporting video memory.

Sadly though, there doesn't seem to be many if any OpenGL performance fixes, as we all known Unity3D's performance isn't on-par with Windows. There a fair few OpenGL ES fixes, but nothing good for OpenGL desktop, but hey actually being able to play some more Unity games thanks to the mouse fixes is a damn good start...if a little late.

See the full blog post from Unity here. Article taken from
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The comments on this article are closed.
mint_guy 27 May 2014 at 10:54 am UTC
I hope this fixes will go into Rust. Can't really play it while looking at the skybox. =D
B166ERDK 27 May 2014 at 12:12 pm UTC
Until the they update the game to take advantage of the fixes just turn down your resolution a bit and it should not lock up any more.
stan 27 May 2014 at 1:14 pm UTC
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“Fixed non-ASCII text input”, I like that one! Maybe I’ll be able to bind accented characters in some games now .

I didn’t have the mouse problem, although I often prefer to play in windowed mode so that could explain why.
Anonymous 27 May 2014 at 2:44 pm UTC
Finally fixed that mouse problem, great.

So how much better does Windows perform compared to Linux with Unity? I guess most Unity games I play are lightweight so I haven't noticed an issue.
Anonymous 27 May 2014 at 10:09 pm UTC
" Linux: Worked around drivers grossly underreporting video memory. "

This !

I have been waiting for this fix. Now Just to wait for Verdun , Guns of Icarus and Rust to update.
pd12 31 May 2014 at 3:53 am UTC
I just commented on my experience with GoI (and PA) at
I hope this update REALLY fixes the Unity mouse looking up thing, especially seeing as it says Linux: Fixed "jump" when initially locking mouse cursor. But my problem is persistent and not a "jump". (See the issue tracker link for more details).

I'd like to play Rust but maybe when it's a bit cheaper (althought it looks like CT uniformed players in bases going out and killing cavemen) =P
Liam Dawe 31 May 2014 at 8:42 am UTC
I tested a game that uses this version of Unity and the mouse was perfectly fine, so it looks like it may have fixed it for real.
Quiller[NL] 14 June 2014 at 11:35 am UTC
Anonymous" Linux: Worked around drivers grossly underreporting video memory. "
This !
I have been waiting for this fix. Now Just to wait for Verdun , Guns of Icarus and Rust to update.
Verdun played nice on my Linux Mint 15 on high resolution. Update 150 (Unity 4.5) screwed up the whole game. Mouse is difficult to control or not at all. Motion is choppy etc. Not playable at all anymore (
edo 17 June 2014 at 5:30 am UTC
There are some bugs in Rochard for Linux than I had, I hope it is now fixed and the game gets updated to the new unity 4.5.
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