Мерцание экрана в Ubuntu 18.04

Мой экран постоянно мигает во время работы в Ubuntu 18.04.

$ sudo lshw -c display
[sudo] password for suchith: 
  *-display                 
       description: VGA compatible controller
       product: HD Graphics 5500
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:53 memory:a8000000-a8ffffff memory:b0000000-bfffffff ioport:5000(size=64) memory:c0000-dffff
  *-display
       description: 3D controller
       product: GK208BM [GeForce 920M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:08:00.0
       version: a1
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom
       configuration: driver=nvidia latency=0
       resources: irq:56 memory:a9000000-a9ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:3000(size=128) memory:aa000000-aa07ffff

$ uname -a
Linux redshellspy 4.19.0-041900-generic #201810221809 SMP Mon Oct 22 22:11:45 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Кто-нибудь может мне помочь с этим?