Установил Ubuntu, звук так и не появился.

Установил Ubuntu, звук так и не появился. проверил рекомендуемыми командами:

root@home-Aspire-5820TG:~# alsactl store
root@home-Aspire-5820TG:~# dmesg | grep hda
[   20.450118] snd_hda_intel 0000:00:1b.0: enabling device (0000 -> 0002)
[   20.450290] snd_hda_intel 0000:00:1b.0: irq 45 for MSI/MSI-X
[   20.453607] hda-intel 0000:00:1b.0: no codecs found!
[   20.453911] hda-intel 0000:01:00.1: Handle VGA-switcheroo audio client
[   20.453913] hda-intel 0000:01:00.1: Using LPIB position fix
[   20.453950] snd_hda_intel 0000:01:00.1: irq 45 for MSI/MSI-X
[   20.456371] hda-intel 0000:01:00.1: Enable sync_write for stable communication
root@home-Aspire-5820TG:~# lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 18)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Madison [Mobility Radeon HD 5650/5750 / 6530M/6550M]
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Redwood HDMI Audio [Radeon HD 5000 Series]
02:00.0 Ethernet controller: Qualcomm Atheros AR8151 v1.0 Gigabit Ethernet (rev c0)
03:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
7f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
7f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
7f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
7f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
7f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
7f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)