Screen freeze
When I run the miner and see the accepted message, the screen freezes and I am not able to switch the windows. It is bothering. Any one has faced such an issue?

```
 * VERSIONS     XMRig/2.7.0-beta libuv/1.9.1 CUDA/9.20 gcc/7.2.0
 * CPU          AMD Ryzen 7 1800X Eight-Core Processor          x64 AES
 * GPU #0       PCI:0000:26:00 Quadro M2000 @ 1162/3303 MHz 56x18 0x0 arch:52 SMX:6
 * ALGO         cryptonight, donate=5%
 * POOL #1      xmr.coinfoundry.org:3032 variant 1

```
and

```
# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 17.10
Release:	17.10
Codename:	artful

```
