I also have a Phillips 5.1 soundcard, which is what you seem to have, sevi. My 5.1 sound was working perfectly for a while, on videos such as LOTR. Then I popped in The Italian Job one day, and sound was messed up, only going out the rear speakers. Someone with a similar problem mentioned that they have Creative Inspire 5.1 5300 speakers, but I don't see how that can be part of the problem. My system has been acting weird for a while, perhaps I should reinstall already. But does anyone know if this is soundcard specific? The one we have uses a C-Media PCI CMI8738-MC6 chipset. Fiddling with alsamixer controls has no effect whatsoever, except sometimes emitting a static sound from my center speaker. I believe it worked at one point, but was never sure.

Seriously, does anyone have any ideas on this? I will reinstall Slackware when I have the time, and report if it helped or not. I never had any problems with this sound card and xine surround sound output in the four years that I have had it.

EDIT: Look here: http://www.linuxquestions.org/questi...ad.php?t=23167

Good day,

I am having 4.1 surround problems for over 1 year now.I am using an Abit NV8 ,onboard sound.Alsa is :Advanced Linux Sound Architecture Driver Version 1.0.11rc2 (Wed Jan 04 08:57:20 2006 UTC).

...2.6.15-1.2054_FC5


I cannot get all my 4 speakers running.only one front & one rear + Hub are working.I have 4.1 surrounds .

Trust me,i've tried to get them all working for MONTHSSSSS...

If you can help me please?

Martin.

Guignol: Could you send me the output from "lspci -vn" and "cat /proc/asound/card0/codec#2" (or whatever codec appears). I've been working on alsa drivers for a little bit now, and may be able to spot a fix for you.

Also, try downloading the latest packages (driver/libs/utils) from alsa-project.org. It "may" have already been fixed.

Thx for the reply G,its appreciated,

Here it is:
codec97#0]# cat ac97#0-0
0-0/0: Realtek ALC850 rev 0

PCI Subsys Vendor: 0x147b
PCI Subsys Device: 0x1c13

Revision : 0x00
Compat. Class : 0x00
Subsys. Vendor ID: 0xffff
Subsys. ID : 0xffff

Capabilities :
DAC resolution : 16-bit
ADC resolution : 16-bit
3D enhancement : No 3D Stereo Enhancement

Current setup
Mic gain : +0dB [+0dB]
POP path : pre 3D
Sim. stereo : off
3D enhancement : off
Loudness : off
Mono output : MIX
Mic select : Mic1
ADC/DAC loopback : off
Double rate slots: 7/8
Extended ID : codec=0 rev=2 LDAC SDAC CDAC DSA=0 SPDIF DRA
Extended status : SPCV LDAC SDAC CDAC SPDIF=10/11
SPDIF Control : Consumer PCM Category=0x2 Generation=1 Rate=48kHz


~]# lspci -vn

00:00.0 0580: 10de:005e (rev a3)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [e0] HyperTransport: MSI Mapping

00:01.0 0601: 10de:0050 (rev a3)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0

00:01.1 0c05: 10de:0052 (rev a2)
Subsystem: 147b:1c13
Flags: 66MHz, fast devsel, IRQ 11
I/O ports at fc00 [size=32]
I/O ports at 1c00 [size=64]
I/O ports at 1c40 [size=64]
Capabilities: [44] Power Management version 2

00:02.0 0c03: 10de:005a (rev a2) (prog-if 10)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 225
Memory at fe02f000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:02.1 0c03: 10de:005b (rev a3) (prog-if 20)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 217
Memory at fe02e000 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Debug port
Capabilities: [80] Power Management version 2

00:04.0 0401: 10de:0059 (rev a2)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 50
I/O ports at f000 [size=256]
I/O ports at ec00 [size=256]
Memory at fe02d000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:06.0 0101: 10de:0053 (rev f2) (prog-if 8a)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0
I/O ports at e000 [size=16]
Capabilities: [44] Power Management version 2

00:07.0 0101: 10de:0054 (rev f3) (prog-if 85)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 217
I/O ports at 09f0 [size=8]
I/O ports at 0bf0 [size=4]
I/O ports at 0970 [size=8]
I/O ports at 0b70 [size=4]
I/O ports at cc00 [size=16]
Memory at fe02b000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:08.0 0101: 10de:0055 (rev f3) (prog-if 85)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 225
I/O ports at 09e0 [size=8]
I/O ports at 0be0 [size=4]
I/O ports at 0960 [size=8]
I/O ports at 0b60 [size=4]
I/O ports at b800 [size=16]
Memory at fe02a000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:09.0 0604: 10de:005c (rev a2) (prog-if 01)
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000a000-0000afff
Memory behind bridge: fb000000-fcffffff
Prefetchable memory behind bridge: fdf00000-fdffffff

00:0a.0 0680: 10de:0057 (rev a3)
Subsystem: 147b:1c13
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 233
Memory at fe029000 (32-bit, non-prefetchable) [size=4K]
I/O ports at b400 [size=8]
Capabilities: [44] Power Management version 2

00:0b.0 0604: 10de:005d (rev a3)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: fde00000-fdefffff
Prefetchable memory behind bridge: 00000000fdd00000-00000000fdd00000
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel

00:0c.0 0604: 10de:005d (rev a3)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 00008000-00008fff
Memory behind bridge: fdc00000-fdcfffff
Prefetchable memory behind bridge: 00000000fdb00000-00000000fdb00000
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel

00:0d.0 0604: 10de:005d (rev a3)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: 00007000-00007fff
Memory behind bridge: fda00000-fdafffff
Prefetchable memory behind bridge: 00000000fd900000-00000000fd900000
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel

00:0e.0 0604: 10de:005d (rev a3)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
I/O behind bridge: 00006000-00006fff
Memory behind bridge: f8000000-faffffff
Prefetchable memory behind bridge: 00000000d8000000-00000000dff00000
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1 Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel

00:18.0 0600: 1022:1100
Flags: fast devsel
Capabilities: [80] HyperTransport: Host or Secondary Interface

00:18.1 0600: 1022:1101
Flags: fast devsel

00:18.2 0600: 1022:1102
Flags: fast devsel

00:18.3 0600: 1022:1103
Flags: fast devsel

01:08.0 0300: 1002:4754 (rev 41)
Subsystem: 1002:4754
Flags: bus master, stepping, medium devsel, latency 32
Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
I/O ports at ac00 [size=256]
Memory at fcfff000 (32-bit, non-prefetchable) [size=4K]
[virtual] Expansion ROM at fdf00000 [disabled] [size=128K]

05:00.0 0300: 10de:00ce (rev a2)
Subsystem: 10de:0243
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at f8000000 (32-bit, non-prefetchable) [size=16M]
Memory at d8000000 (64-bit, prefetchable) [size=128M]
Memory at f9000000 (64-bit, non-prefetchable) [size=16M]
[virtual] Expansion ROM at fa000000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Capabilities: [68] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
Capabilities: [78] Express Endpoint IRQ 0
Capabilities: [100] Virtual Channel
Capabilities: [128] Power Budgeting

Thanks in advance!I'll go & see for the alsa project in the meanwile.

Martin.

Any ideas on my problem? Has there been any progress on the alsa cmedia drivers?

Ok all. I need to take a step back a second. I only just started working on the alsa driver stuff, and am currently only familiar with the Intel HDA audio spec. I'd suggest posting your other soundcard issues in the alsa-project.org bugzilla site. I might be able to help later, but right now I'm concentrating on HDA audio. Sorry.

Keep checking the alsa-project site for new release information.

Alright! Thx anyways Grue