Sony: non funziona audio

[pivari]

Ho installato linux mint in un vecchio sony e non funziona l'audio.
Mi sembrava che facendolo andare da chiavetta funzionasse tutto, forse è colpa di un aggiornamento.
Riuscite a darmi una mano o ad indicarmi come posso procedere?

grazie


System:
Kernel: 5.4.0-73-generic x86_64 bits: 64 compiler: gcc v: 9.3.0
Desktop: Cinnamon 4.8.6 wm: muffin 4.8.1 dm: LightDM 1.30.0
Distro: Linux Mint 20.1 Ulyssa base: Ubuntu 20.04 focal
Machine:
Type: Laptop System: Sony product: VPCEB2C4E v: C605AJZG serial: <filter>
Chassis: type: 10 serial: <filter>
Mobo: Sony model: VAIO serial: <filter> BIOS: American Megatrends
v: R0300Y8 date: 07/20/2010
Battery:
ID-1: BAT0 charge: 32.0 Wh condition: 32.0/42.2 Wh (76%) volts: N/A/123.8
model: Sony Corp. type: Li-ion serial: N/A status: Full
CPU:
Topology: Dual Core model: Intel Core i5 M 450 bits: 64 type: MT MCP
arch: Nehalem rev: 5 L2 cache: 3072 KiB
flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 19153
Speed: 1419 MHz min/max: 1199/2400 MHz boost: enabled Core speeds (MHz):
1: 1277 2: 1410 3: 1398 4: 1386
Graphics:
Device-1: Intel Core Processor Integrated Graphics vendor: Sony
driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0046
Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa
resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics (ILK) v: 2.1 Mesa 20.2.6
direct render: Yes
Audio:
Device-1: Intel 5 Series/3400 Series High Definition Audio vendor: Sony
driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:3b56
Sound Server: ALSA v: k5.4.0-73-generic
Network:
Device-1: Qualcomm Atheros AR9285 Wireless Network Adapter
vendor: Foxconn T77H126.00 802.11bgn driver: ath9k v: kernel port: e000
bus ID: 02:00.0 chip ID: 168c:002b
IF: wlp2s0 state: up mac: <filter>
Device-2: Marvell Yukon Optima 88E8059 [PCIe Gigabit Ethernet with AVB]
vendor: Sony driver: sky2 v: 1.30 port: b000 bus ID: 04:00.0
chip ID: 11ab:4381
IF: enp4s0 state: down mac: <filter>
Drives:
Local Storage: total: 252.91 GiB used: 16.54 GiB (6.5%)
ID-1: /dev/sda vendor: Silicon Power model: SPCC Solid State Disk
size: 238.47 GiB speed: 3.0 Gb/s serial: <filter> rev: 61.3 scheme: MBR
ID-2: /dev/sdb type: USB vendor: Kingston model: DataTraveler 2.0
size: 14.44 GiB serial: <filter> rev: PMAP scheme: MBR
Partition:
ID-1: / size: 233.24 GiB used: 14.96 GiB (6.4%) fs: ext4 dev: /dev/sda5
Sensors:
System Temperatures: cpu: 48.0 C mobo: 48.0 C
Fan Speeds (RPM): N/A
Info:
Processes: 220 Uptime: 17m Memory: 3.52 GiB used: 1.23 GiB (35.0%)
Init: systemd v: 245 runlevel: 5 Compilers: gcc: 9.3.0 alt: 9 Shell: bash
v: 5.0.17 running in: gnome-terminal inxi: 3.0.38