I just bought a new 3400G (AMD Ryzen 5 3400G with Radeon Vega 11 Graphics) and the 60 Hz refresh configuration is not working via HDMI. At 30 Hz all works ok, but when I put 60Hz on refresh rate at 3840x2160 the hdmi signal randomly disapears and then reappear, or it shows random ghost lines on the TV.
The HDMI cable work OK with other devices and support HDMI 2.0. It is the first time that I use 4k at 60Hz on a device. In particular this device is a RCA TS50UHD Smart TV.
I do not tried yet with the steps on https://askubuntu.com/a/1168404/142926. Anyone know if I follow the steps of link above Can I "crash" something, or that option only add an option to grub menu and I can use an older kernel installed for boot in order to go back and use the system with 30 Hz ithout a problem
My actual kernel and Ubuntu version:
➜ default uname -a
Linux L-G580 5.0.0-31-generic #33~18.04.1-Ubuntu SMP Tue Oct 1 10:20:39 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
➜ default lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic
06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev c8) (prog-if 00 [VGA controller])
glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: AMD RAVEN (DRM 3.27.0, 5.0.0-31-generic, LLVM 8.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.0.8
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.0.8
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.0.8
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:
I appreciate any help.... Thank You.
