OpenGL renderer string: llvmpipe (LLVM 9.0, 256 bits)

Hello,

after upgrading to Mint 19.3 I am getting this message:

glxinfo | grep "OpenGL renderer"

OpenGL renderer string: llvmpipe (LLVM 9.0, 256 bits)

Is this an error? Is my GPU hardware acceleration now disabled?

Thanks.

PS:
xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x6b cap: 0x9, Source Output, Sink Offload crtcs: 3 outputs: 4 associated providers: 1 name:modesetting
Provider 1: id: 0x44 cap: 0x6, Sink Output, Source Offload crtcs: 5 outputs: 0 associated providers: 1 name:Radeon 500 Series @ pci:0000:02:00.0