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configuring sound : Acer 4720 laptop ( 82801H ICH8 family HD Audio Controller)
hi all,
I am trying to configure the above sound card, but the test sound does not play .. or I can't hear it. I see the lsmod lists out the sound modules and shows devices using it. I donot know where to go from there. I see the PCM device is ALC268 Analog....that's okay isn't it?!? Can someone help me get the thing done... thanks nishith |
Have brought up a mixer, turned up the volume, and made sure you are not muted?
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clarification : mixer
hi camorri,
brought up alsamixer and it says : Card : Pulse Audio Chip : Pulse Audio View : [Playback] Capture All Donot know what to make out of it. The volume control responds and brings up a small GUI and I turned up the vol to max. The volume control applet is working( doesn't have the cross on it) Seems like all is fine. the test sound button on the System-config-sound says opening pipeline but nothing more happens .... Any suggestions thanks nishith |
O.K. I re-read your first post. From what you first posted it appears you have a driver loaded for your card. I can't be sure it is the correct one. Usually if it was detected on installation, it will work.
The program alsamixer allows you to unmute various channels and change volume. If you look at any of the items displayed, near the bottom of the item, you will see either two O's or two M's. Two O's means it is not muted and two M's means it is muted. You can toggle mute on and off by using the right and left arrows; shift . or shift , some people would call them greater than or less than math symbols. You can increase or decrease a volume using the arrow pad. Left and right arrow select the item, and the up and down increase or decrease volume. Now the messy part, different sound cards call the items different names. There doesn't see to be any consistency in the naming conventions. I can adjust volume with either PCM or Front. I can mute it with either. So to get sound out, I have to increase volume on the two, and make sure both are not muted. Play with it. If you are running KDE, you probably have kmix installed. It is a little nicer to look at, but has the same funky names on the controls. It uses red and green lights to indicate muting on inputs and outputs. Give it a go, let me know what happens. If it is still a no go, we'll see if we can find out if you have the correct driver loaded. |
hi cliff,
thanks for a detailed insight into alsamixer : I executed alsamixer -D hw:0 and it brought up the small black console which I have adjusted as under Both headphone and Front to OO Increased gain of both channels to highest value in hope of hearing something. But what i get is a muted speaker :( By the way the module being used by HD Audio Controller is snd-hda-intel now what nisith |
I did a little googling, and it seems there was a problem with support for your sound chip when it first came out. There is a patch to make it work, but the dates I saw were 2005 and 2006.
What disto and what release are you using? If it's older, it may be time to install a newer release. If its up to date, then we'll look elsewhere. For the record, would you post the output of the following commands. 1. 'aplay -l' 2. 'aplay -L' 3. '/sbin/lsmod | grep snd' One other thought, is your user a member of the audio group? If not, on some systems you may need to add yourself to that group to gain access to the audio hardware. |
hi cliff,
thanks a ton for your responses. I am using fedora 8 with the 2.6.23 kernel. ( somebody already suggested me to upgrade to 2.6.24 which I am compiling right now - any hints you can give me about the sound section while running menuconfig would be helpful ) The outputs of the commands you asked about are as under:- [root@localhost ~]# aplay -L front:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, ALC268 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers null Discard all samples (playback) or generate zero samples (capture) [root@localhost ~]# aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: ALC268 Digital [ALC268 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 6: Si3054 Modem [Si3054 Modem] Subdevices: 1/1 Subdevice #0: subdevice #0 lspci -v ( sound section) 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) Subsystem: Acer Incorporated [ALI] Unknown device 011d Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at f0500000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [70] Express Unknown type IRQ 0 that's it thanks |
Thank-you, I'm going to do some looking around. What ever the problem is, it is not obvious. My system used the same driver, although the sound card chipset is a little different. I'll get back to this post in a day or so.
I use Mandriva, and I have never compiled my own kernel, so I can't help there much. One thought, have you tried any live distros to see it sound works there? I'm thinking maybe Knoppix, they have very good hardware detection. We might get a clew what is wrong from a live distro; should it work. |
Is the kernel you are using a kernel you compiled, or is it a stock kernel from Fedora?
Did you download the driver from ALSA and compile it yourself, or did it come from the package manager? Here is a link to the information from ALSA for the driver. http://www.alsa-project.org/main/ind...dule-hda-intel Been looking for any issue to do the sound chip or the driver. So far, nothing. |
hi cliff,
thanks for all the trouble you are taking. I am using the fedora stock kernel and the alsa driver is also the fedora one and I didn't compile it my self . Ubuntu fiesty live cd didnot detect the hardware , will give knoppix a try. When I see the involvement of guys like you in the forums, I think who cares about the technical support of the windows....in any case they are no match. |
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Spent some time here --> http://forums.fedoraforum.org looking at threads similar to your problem. It seems there is an issue with either the driver or the hardware. I believe it is the driver at fault. However I have not found a fix. The post above does look promising.
Have a read through this thread, you will see what I mean. http://forums.fedoraforum.org/forum/...oration+82801G |
This is the thread referred to by my post #11, this looks like it is worth a try. Here is the thread.
http://forums.fedoraforum.org/forum/...oration+82801G The fix is around post 35, if you don't want to read the whole thing. |
THANKS A TON.
shall be getting back to you after trying out the stuff. okay ...I founda 4FrontTechnologies OSS installer, they say it works well for ICH family sound cards.... shall I give it a try? Which one is better OSS or alsa ? nishith |
Alsa is newer, and I'm sure more feature rich. There are OSS plugins to support OSS requirements.
I wouldn't expect the sound card ( chipset ) you have would be supported by a pure OSS driver. I have OSS support added on my system. Quote:
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