Lightdm hangs system completely when prime selecting Nvidia or Intel

1-) Linux Mint 18.2 Cinnamon 64 bit

2-)Using an Nvidia Pascal ( Gtx 10 series ) and using any prop driver is enough to reproduce it.

3-) After installing Nvidia drivers from driver manager , selecting which gpu to use via Nvidia Prime applet or from terminal hangs all system when logging out or restarting. You cannot even enter TTY.

Problem is also affecting other people too:

https://bugs.launchpad.net/lightdm/+bug/1637733

My comment on there is #25

4-) Using Nvidia Prime normally with Lightdm but i cannot , because of that i switched to MDM.

5- ) Always on Lightdm.

My system info is that:

System: Host: asus-FX553VD Kernel: 4.13.10-041310-generic x86_64 (64 bit gcc: 7.2.0)
           Desktop: Cinnamon 3.4.6 (Gtk 3.18.9-1ubuntu3.3) dm: mdm Distro: Linux Mint 18.2 Sonya
Machine: System: ASUSTeK (portable) product: GL553VD v: 1.0
           Mobo: ASUSTeK model: GL553VD v: 1.0 Bios: American Megatrends v: GL553VD.303 date: 04/28/2017
CPU: Quad core Intel Core i7-7700HQ (-HT-MCP-) cache: 6144 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 22464
           clock speeds: min/max: 800/3800 MHz 1: 2800 MHz 2: 2800 MHz 3: 2800 MHz 4: 2800 MHz
           5: 2800 MHz 6: 2800 MHz 7: 2800 MHz 8: 2800 MHz
Graphics: Card-1: Intel Device 591b bus-ID: 00:02.0 chip-ID: 8086:591b
           Card-2: NVIDIA Device 1c8d bus-ID: 01:00.0 chip-ID: 10de:1c8d
           Display Server: X.Org 1.18.4 driver: nvidia Resolution: 1920x1080@60.01hz
           GLX Renderer: GeForce GTX 1050/PCIe/SSE2
           GLX Version: 4.5.0 NVIDIA 384.90 Direct Rendering: Yes
Audio: Card Intel Device a171 driver: snd_hda_intel bus-ID: 00:1f.3 chip-ID: 8086:a171
           Sound: Advanced Linux Sound Architecture v: k4.13.10-041310-generic
Network: Card-1: Intel Wireless 7265 driver: iwlwifi bus-ID: 02:00.0 chip-ID: 8086:095a
           IF: wlp2s0 state: up mac: <filter>
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 03:00.0 chip-ID: 10ec:8168
           IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives: HDD Total Size: 1128.2GB (33.8% used)
           ID-1: /dev/sda model: SanDisk_SD8SN8U1 size: 128.0GB serial: 172017421382
           ID-2: /dev/sdb model: HGST_HTS541010A9 size: 1000.2GB serial: JA100CD90KK22M
Partition: ID-1: / size: 118G used: 8.8G (8%) fs: ext4 dev: /dev/sda2
           ID-2: /home size: 917G used: 347G (40%) fs: ext4 dev: /dev/sdb1
RAID: System: supported: N/A
           No RAID devices: /proc/mdstat, md_mod kernel module present
           Unused Devices: none
Sensors: System Temperatures: cpu: 58.0C mobo: N/A gpu: 0.0:46C
           Fan Speeds (in rpm): cpu: 0
Repos: Active apt sources in file: /etc/apt/sources.list.d/additional-repositories.list
           deb https: //dl.winehq.org/wine-builds/ubuntu/ xenial main
           Active apt sources in file: /etc/apt/sources.list.d/google-chrome.list
           deb [arch=amd64] http: //dl.google.com/linux/chrome/deb/ stable main
           Active apt sources in file: /etc/apt/sources.list.d/graphics-drivers-ppa-xenial.list
           deb http: //ppa.launchpad.net/graphics-drivers/ppa/ubuntu xenial main
           deb-src http: //ppa.launchpad.net/graphics-drivers/ppa/ubuntu xenial main
           Active apt sources in file: /etc/apt/sources.list.d/numix-ppa-xenial.list
           deb http: //ppa.launchpad.net/numix/ppa/ubuntu xenial main
           deb-src http: //ppa.launchpad.net/numix/ppa/ubuntu xenial main
           Active apt sources in file: /etc/apt/sources.list.d/official-package-repositories.list
           deb http: //packages.linuxmint.com sonya main upstream import backport
           deb http: //ftp.linux.org.tr/ubuntu xenial main restricted universe multiverse
           deb http: //ftp.linux.org.tr/ubuntu xenial-updates main restricted universe multiverse
           deb http: //ftp.linux.org.tr/ubuntu xenial-backports main restricted universe multiverse
           deb http: //security.ubuntu.com/ubuntu/ xenial-security main restricted universe multiverse
           deb http: //archive.canonical.com/ubuntu/ xenial partner
           Active apt sources in file: /etc/apt/sources.list.d/opera-stable.list
           deb https: //deb.opera.com/opera-stable/ stable non-free #Opera Browser (final releases)
           Active apt sources in file: /etc/apt/sources.list.d/paulo-miguel-dias-pkppa-xenial.list
           deb http: //ppa.launchpad.net/paulo-miguel-dias/pkppa/ubuntu xenial main
           deb-src http: //ppa.launchpad.net/paulo-miguel-dias/pkppa/ubuntu xenial main
           Active apt sources in file: /etc/apt/sources.list.d/steam.list
           deb [arch=amd64,i386] http: //repo.steampowered.com/steam/ precise steam
           deb-src [arch=amd64,i386] http: //repo.steampowered.com/steam/ precise steam
           Active apt sources in file: /etc/apt/sources.list.d/teejee2008-ppa-xenial.list
           deb http: //ppa.launchpad.net/teejee2008/ppa/ubuntu xenial main
           deb-src http: //ppa.launchpad.net/teejee2008/ppa/ubuntu xenial main
Info: Processes: 261 Uptime: 1:28 Memory: 1700.5/7864.8MB
           Init: systemd v: 229 runlevel: 5 default: 2 Gcc sys: 5.4.0
           Client: Unknown python2.7 client inxi: 2.2.35