The display colors are totally distorted (everything is in purple and pink tones) after resuming from suspension. This does not happen if I manually suspend but if the PC suspends itself after the specified time on settings, when I resume the colors are totally broken. If I restart gnome-shell (Alt + F2 - r) everything goes back to normal.
This also don't happen using a VGA connector with another monitor. But I need to use a monitor with a DVI-HDMI connector only and this only happens in those 2 cases.
I tried radeon.modeset=0 and it did not work because the system only recognizes a 4:3 resolution and the aspect ratio was distorted and I had to go back to normal. What can I do?
System info:

  • VGA compatible controller
  • Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM]
  • Advanced Micro Devices, Inc. [AMD/ATI]
  • driver=radeon latency=0
  • Ubuntu 18.04 (default installation)