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#1 09 Sep 2016 14:33:04

gprec
Membru nou
Înregistrat: 18 Nov 2009
Mesaje: 7

Problema audio: sunet doar in boxa dreapta

Buna ziua, incerc de cateva zile sa instalez o versiune ubuntu (sau derivata din ubuntu) pe calculatorul desktop al unei cunostinte;
Absolut toate versiunile testate (cel putin 7-8!) au aceeasi problema audio: sunet doar in boxa dreapta.
Mentionez ca indicatorul de la setting/balance este perfect centrat.
De fapt se aude ceva si in cea stanga, dar extrem de slab; Am testat cel putin trei perechi de boxe, deci nu boxele sunt problema.
In acelasi timp, la acelasi calculator sunetul functioneaza perfect in orice versiune windows, deci problema nu e la chipul audio.
Am incercat tot felul de variante in "pulseaudio volume control", de asemenea in alsamixer dar fara nici un rezultat.
Pentru ca multa lume pe net acuza serverul pulseaudio, am testat special si o distributie fara pulseaudio instalat (Lubuntu), dar nici asa nu a mers.


Comanda lspci are urmatorul output:

Cod:

00:00.0 RAM memory: NVIDIA Corporation MCP55 Memory Controller (rev a2)
00:01.0 ISA bridge: NVIDIA Corporation MCP55 LPC Bridge (rev a3)
00:01.1 SMBus: NVIDIA Corporation MCP55 SMBus Controller (rev a3)
00:02.0 USB controller: NVIDIA Corporation MCP55 USB Controller (rev a1)
00:02.1 USB controller: NVIDIA Corporation MCP55 USB Controller (rev a2)
00:04.0 IDE interface: NVIDIA Corporation MCP55 IDE (rev a1)
00:05.0 IDE interface: NVIDIA Corporation MCP55 SATA Controller (rev a3)
00:05.1 IDE interface: NVIDIA Corporation MCP55 SATA Controller (rev a3)
00:05.2 IDE interface: NVIDIA Corporation MCP55 SATA Controller (rev a3)
00:06.0 PCI bridge: NVIDIA Corporation MCP55 PCI bridge (rev a2)
00:06.1 Audio device: NVIDIA Corporation MCP55 High Definition Audio (rev a2)
00:08.0 Bridge: NVIDIA Corporation MCP55 Ethernet (rev a3)
00:0f.0 PCI bridge: NVIDIA Corporation MCP55 PCI Express bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:0a.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)
02:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
02:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1).

iar comanda "cat /proc/asound/pcm" arata

Cod:

00-00: ALC888 Analog : ALC888 Analog : playback 1 : capture 1
00-01: ALC888 Digital : ALC888 Digital : playback 1 : capture 1
00-02: ALC888 Alt Analog : ALC888 Alt Analog : capture 1
01-03: HDMI 0 : HDMI 0 : playback 1
01-07: HDMI 0 : HDMI 0 : playback 1
01-08: HDMI 0 : HDMI 0 : playback 1
01-09: HDMI 0 : HDMI 0 : playback 1

Are cineva vreo idee ce as mai putea face?

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#2 09 Sep 2016 18:09:57

bula20
Membru
Înregistrat: 18 Jan 2016
Mesaje: 429

Re: Problema audio: sunet doar in boxa dreapta

Ruleaza amixer si posteaza rezultatul.


Procesor:GenuineIntel ,Intel(R) Atom(TM) CPU  230   @ 1.60GHz, placa video intel G945,
2GB ram, 160GB hdd.

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#3 09 Sep 2016 18:36:13

gprec
Membru nou
Înregistrat: 18 Nov 2009
Mesaje: 7

Re: Problema audio: sunet doar in boxa dreapta

amixer:

Cod:

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 18 [58%] [-19.50dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-46.50dB] [off]
  Front Right: Playback 0 [0%] [-46.50dB] [off]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Front',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Front Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Front Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'Surround',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Center',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'LFE',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 31
  Mono: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Side',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 31 [100%] [0.00dB] [on]
  Front Right: Playback 31 [100%] [0.00dB] [on]
Simple mixer control 'Line',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Line Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'CD',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined cswitch cswitch-joined
  Playback channels: Mono
  Capture channels: Mono
  Mono: Playback [off] Capture [off]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 19 [61%] [12.00dB] [on]
  Front Right: Capture 19 [61%] [12.00dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 0 [0%] [-16.50dB] [off]
  Front Right: Capture 0 [0%] [-16.50dB] [off]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Rear Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'Front Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Rear Mic' 'Front Mic' 'Line' 'CD'
  Item0: 'Rear Mic'
Simple mixer control 'Loopback Mixing',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Rear Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Rear Mic Boost',0
  Capabilities: volume
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]

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#4 09 Sep 2016 19:08:50

bula20
Membru
Înregistrat: 18 Jan 2016
Mesaje: 429

Re: Problema audio: sunet doar in boxa dreapta

Poti sa dai disable  " Loopback Mixing" mai multe informatii aici:
https://www.kernel.org/doc/Documentatio … ntrols.txt


Procesor:GenuineIntel ,Intel(R) Atom(TM) CPU  230   @ 1.60GHz, placa video intel G945,
2GB ram, 160GB hdd.

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#5 09 Sep 2016 19:45:41

gprec
Membru nou
Înregistrat: 18 Nov 2009
Mesaje: 7

Re: Problema audio: sunet doar in boxa dreapta

Am rulat alsamixer in terminal, am setat acolo coloana loopback pe "disabled" (inainte era intr-adevar enabled), dar fara rezultat.

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#6 11 Sep 2016 20:29:25

gprec
Membru nou
Înregistrat: 18 Nov 2009
Mesaje: 7

Re: Problema audio: sunet doar in boxa dreapta

Pana la urma s-a rezolvat problema aducand bios-ul placii de baza la o versiune mai veche.
Din pacate distributiile cu kernel 4.x au aceeasi problema (sunet doar intr-o boxa) dar cele cu kernel 3.x par sa suporte perfect acum placa de baza.
Am pus un linux mint xfce 17 care se misca destul de bine si arata suficient de familiar persoanei in cauza.
Multumesc pentru ajutor.

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