Mouse Sensitivity is unplayably high in some games - but OK in Desktop Mode.

[hind-d]

as the header says, the sensitivity of my mouse is extremely high in some games.
Crysis, Blood, Doom 64 all have that problem - the sensitivity is so high ingame, that even setting it to its lowest doesnt help in any way.
strangely enough the mouse works fine in all of these games menus.
with other games i dont have that problem at all (Quake, Bioshock Infinite)
the mouse itself shouldnt be the problem either - i tested it with another mouse with the same results.

in Desktop Mode i dont have that problem at all, though ... same games, same mice, everything works as it should.

very strange. any ideas what the problem could be?

[hind-d]

OK, so i tested a couple more games - its actually every game i try to play with mouse/keyboard that has this problem (including Quake and Bioshock Infinite).
the mouse works fine in the OS, and it works fine in the menus of the games - but as soon as its ingame/gameplay the mouse does not work properly anymore.
and its not just the sensitivity, i either look straight down or straight up, with turning left/right being extremely fast.

with Quake its a little bit different: here i can only look in a certain "range", like i was controlling a head in a cockpit or something. i cant turn a full 360, more like 90 degrees in each direction.

very, very strange.

and yes, in Desktop Mode i have non of these problems...

[karstux]

I can't add anything useful here besides that I experience the same issue. In gaming mode, the mouse works in menus, but not when steering a first-person character (I tested this in Skyrim SE and No Man's Sky).

I really hope mouse and keboard handling are being improved. "Traditional" gaming on an external monitor, with mouse and keyboard, was a pretty huge use case for me when deciding to buy the Deck.

[GingeR13]

same here. i would love to play also on monitor with mouse/keyboard controls in older games but sensitivity is insane for mouse. it's ok in menu/desktop

i hope they will address that case soon

[Bee🐝]

You’re going to need to be more descriptive. Is the sensitivity setting in the controller mapping not working? Is there no noticeable difference?

If there is, for mouse controls, you’ll have to fiddle around with the sliders to get it right; same thing as on a regular PC. This is a personal preference thing.

Also, change the movement slider 2 and play around with smoothing; both do wonders in some games.

[Dwok]

Originally posted by Bee:

You’re going to need to be more descriptive. Is the sensitivity setting in the controller mapping not working? Is there no noticeable difference?

If there is, for mouse controls, you’ll have to fiddle around with the sliders to get it right; same thing as on a regular PC. This is a personal preference thing.

Also, change the movement slider 2 and play around with smoothing; both do wonders in some games.

It's not that. When in gaming mode, the steam deck ignores the raw input of a mouse, instead seemingly interpreting it as a infinite DPI joystick. This doesn't occur in desktop mode, which does proper 1:1 mouse support. What this looks like in game is that your character in an FPS or MMO spins like a washing machine uncontrollably.

Turning the DPI or mouse sensitivity has no effect on the actual interpreted mouse input in gaming mode because any and all movement is just rendered as 'MAXIMUM POWER'.

This is a problem if you want to play a game with KB+M while taking advantage of amazing optimizations from the gaming mode side of the house.

[Valmouth]

I have the same issue on L4D2, first time I want to play on my monitor, I am little sad...
If anyone have a clue

[/Life2Death/ [SBC]]

I have the same issue. And since my monitor on my dock isn't the 1080p or 720p desktop mode is funky af on my unit. Same situation, keyboard and mouse work fine in game menus, then its turbo mode once the game starts. Team fortress, quake etc.

[Hellonearth]

Originally posted by hind-d:

as the header says, the sensitivity of my mouse is extremely high in some games.
Crysis, Blood, Doom 64 all have that problem - the sensitivity is so high ingame, that even setting it to its lowest doesnt help in any way.
strangely enough the mouse works fine in all of these games menus.
with other games i dont have that problem at all (Quake, Bioshock Infinite)
the mouse itself shouldnt be the problem either - i tested it with another mouse with the same results.

in Desktop Mode i dont have that problem at all, though ... same games, same mice, everything works as it should.

very strange. any ideas what the problem could be?

I was searching around for an answer and came across the below. Worked out great!

https://www.youtube.com/watch?v=WK_0vGJGN7k

[Marlock]

If desktop mode doesn't have the issue it probably means Valve did something wrong in Gamescope (the piece of tech developed by them that's behind Gaming Mode).

I wonder if there's already an open issue on their github bug tracker for this... anyone knows?

[Wulfgard]

Originally posted by Hellonearth:

Originally posted by hind-d:

as the header says, the sensitivity of my mouse is extremely high in some games.
Crysis, Blood, Doom 64 all have that problem - the sensitivity is so high ingame, that even setting it to its lowest doesnt help in any way.
strangely enough the mouse works fine in all of these games menus.
with other games i dont have that problem at all (Quake, Bioshock Infinite)
the mouse itself shouldnt be the problem either - i tested it with another mouse with the same results.

in Desktop Mode i dont have that problem at all, though ... same games, same mice, everything works as it should.

very strange. any ideas what the problem could be?

I was searching around for an answer and came across the below. Worked out great!

https://www.youtube.com/watch?v=WK_0vGJGN7k

Thank you so much for posting this video, it helped like a charm!

[deaddoof]

in Desktop Mode i dont have that problem at all, though ... same games, same mice, everything works as it should.

very strange. any ideas what the problem could be?

Sounds about right. I believe steam client pretty grabs raw input. In desktop mode, libinput normalizes input into an internal model mouse.

https://lwn.net/Articles/760770/

http://who-t.blogspot.com/2016/07/libinput-is-done.html

https://who-t.blogspot.com/2018/07/why-its-not-good-idea-to-handle-evdev.html

Hardware just stinks. Hardware vendors never agree with each other so they invent their own thing. It is why many platforms have official hardware which are expensive because hardware is a support nightmare.