Olá pessoal.
Alguém teria alguma "luz", utilizo Ubuntu 18 com lightdm, a porta HDMI não esta funcional.
Utilizei os drives oficiais da Radeon (
https://www.amd.com/en/support/kb/release-notes/rn-prorad-lin-18-40 )
Abaixo segue algumas informações adicionais:
$ uname -r
5.3.0-42-generic
$ lspci -v -s 03:00.0
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev d1) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Vega [Radeon Vega 8 Mobile]
Flags: bus master, fast devsel, latency 0, IRQ 255
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at e0000000 (64-bit, prefetchable) [size=2M]
I/O ports at 2000 [size=256]
Memory at e0700000 (32-bit, non-prefetchable) [size=512K]
Capabilities: <access denied>
Kernel modules: amdgpu
$ lspci -v -s 03:00.7
03:00.7 Non-VGA unclassified device: Advanced Micro Devices, Inc. [AMD] Device 15e6
Subsystem: Advanced Micro Devices, Inc. [AMD] Device 15e4
Flags: fast devsel, IRQ 31
Memory at e0500000 (32-bit, non-prefetchable) [size=1M]
Memory at e078c000 (32-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: i2c_amd_mp2
Kernel modules: i2c_amd_mp2_pci