Comment 12 for bug 1315928

Same error in Ubuntu 18.04.

Also

xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x66 cap: 0x9, Source Output, Sink Offload crtcs: 3 outputs: 4 associated providers: 1 name:modesetting
Provider 1: id: 0x3f cap: 0x4, Source Offload crtcs: 0 outputs: 0 associated providers: 1 name:HAINAN @ pci:0000:03:00.0

DRI_PRIME=1 glxinfo | grep "OpenGL renderer"
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeon: Failed to allocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: alignment : 4096 bytes
radeon: domains : 4
radeon: va : 0x0000000000800000
radeon: Failed to deallocate virtual address for buffer:
radeon: size : 65536 bytes
radeon: va : 0x800000
radeonsi: Failed to create a context.
X Error of failed request: GLXBadContext
  Major opcode of failed request: 155 (GLX)
  Minor opcode of failed request: 6 (X_GLXIsDirect)
  Serial number of failed request: 49
  Current serial number in output stream: 48