AnsweredAssumed Answered

Losing HDMI/display signal before Ubuntu user login, after amdgpu 18.40/18.30 driver installation

Question asked by nem_ on Dec 8, 2018
Latest reply on Dec 21, 2018 by nem_



with newer amdgpu and amdgpu-pro drivers, a fresh Ubuntu 18.04 LTS installation goes to black screen, then loses display signal, before user login.

This can be resolved by going to recovery mode and amdgpu-uninstall the driver.


Tested driver versions

driver versionamdgpu affected?
amdgpu-pro affected?



18.20 does not show this problem.

Any information on upcoming fixes or tweaks welcome.


  • AMD Graphics Card
    • ASUS RX Vega56 STRIX OC
  • Desktop or Laptop System
    • Desktop
  • Operating System
    • Ubuntu 18.04 LTS
  • Driver version installed
    • both 18.30 and 18.40, amdgpu and amdgpu-pro
  • Display Devices
    • HDMI, AOC Q3277PQU
  • Motherboard + Bios Revision
    • Asrock B450M Pro4, P1.60
    • Ryzen 2400G
  • Power Supply Unit  Make, Model & Wattage
    • Corsair RM 650x
  • RAM
    • 16GB