Depois de atualizar meu sistema, tive todas as minhas saídas HDMI acinzentadas nas configurações de áudio. Eu reinstalei as saídas alsa-base e hdmi completamente sem uso. Também tentei reinstalar o driver de vídeo, instalei um da Intel. Eu editei /etc/default/grub e adicionei GRUB_CMDLINE_LINUX_DEFAULT="i915.preliminary_hw_support=1 sem efeito. O que mais devo verificar para que funcione de novo?
lspci -vnn | grep VGA -A 12
00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT
Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Gigabyte Technology Co., Ltd Haswell-ULT Integrated Graphics Controller [1458:d000]
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel modules: i915
aplay -l
**** List of PLAYBACK Hardware Devices ****
xcb_connection_has_error() returned true
card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC269VC Digital [ALC269VC Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0