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Mouse not locked to Dota 2 on OS X : Fullscreen on Multi Monitor #1612

herriojr opened this issue Jun 9, 2019 · 1 comment


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commented Jun 9, 2019

Your system information

Computer Information:
Manufacturer: Apple
Model: MacBookPro11,3
Form Factor: Laptop
No Touch Input Detected

Processor Information:
CPU Vendor: GenuineIntel
CPU Brand: Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
CPU Family: 0x6
CPU Model: 0x46
CPU Stepping: 0x1
CPU Type: 0x0
Speed: 2500 Mhz
8 logical processors
4 physical processors
HyperThreading: Supported
FCMOV: Unsupported
SSE2: Supported
SSE3: Supported
SSSE3: Supported
SSE4a: Unsupported
SSE41: Supported
SSE42: Supported
AES: Supported
AVX: Supported
CMPXCHG16B: Supported
LAHF/SAHF: Supported
PrefetchW: Unsupported

Operating System Version:
MacOS 10.14.5 (64 bit)

Video Card:
Driver: NVIDIA GeForce GT 750M
Driver Version: 1.2
Driver Date: 0 0 0
OpenGL Version: 2.1
Desktop Color Depth: 32 bits per pixel
Monitor Refresh Rate: 0 Hz
VendorID: 0x10de
DeviceID: 0xfe9
Revision: 0xa2
Number of Monitors: 2
Number of Logical Video Cards: 2
Primary Display Resolution: 2560 x 1440
Desktop Resolution: 5120 x 2880
Primary Display Size: 23.46" x 13.19" (26.89" diag)
59.6cm x 33.5cm (68.3cm diag)
Primary VRAM: 0 MB

RAM: 16384 Mb

UI Language: English
Media Type: DVD
Total Hard Disk Space Available: 476902 Mb
Largest Free Hard Disk Block: 68686 Mb
VR Headset: None detected

  • Have you checked for system updates?: Yes
  • Are you using the latest stable video driver available for your system? Vulcan
  • Have you verified the game files?: No

Please describe your issue in as much detail as possible:

Since some recent update, the mouse fixing on Dota 2 in fullscreen is broken for multi monitor setups.

Steps for reproducing this issue:

  1. Use a macbook pro hooked up to an external monitor
  2. Choose Desktop Friendly Fullscreen w/ the external monitor as the primary
  3. Notice the mouse moves freely between both screens while in the game

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commented Jul 2, 2019

For what its worth I have a similar issue on the linux client. Essentially it sometimes doesn't lock the mouse. I found toggling the steam overlay fixes the issue. I used to have to reboot the client mid game. Not sure if that would help you out but hopefully it does (and helps the devs too)

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