Problem with sound

Gins · 02-06-2012, 09:26 AM

Thanks everybody
Now I removed the Mandriva 2010 and formatted the hardrive.
I have installed Mandriva 2011. It was DVD of 1.7 GB.
Problems are still there, anyway.
1. Problem with the sound
2. Problem with the screen resolution. The browser doesn't cover the entire screen. There is black empty screen for about 2cm on the right side.

I will beg your help. Please be with me.

onebuck · 02-06-2012, 11:00 AM

Hi,

I would try a LiveCD. KNOPPIX is a good LiveCD to check hardware with. Get it & boot to see how sound device is handled. Good way to see if the device is functional or not.

Or get one of the following to test the sound device(s);

SystemRescueCd <- 'is a Linux system on a bootable CD-ROM for repairing your system and recovering your data after a crash. It aims to provide an easy way to carry out admin tasks on your computer, such as creating and editing the partitions of the hard disk. It contains a lot of system utilities (parted, partimage, fstools, ...) and basic tools (editors, midnight commander, network tools).' + 'Online-Manual

UBCD Ultimate Boot CD <- 'UBCD allows users to run floppy-based diagnostic tools from most CDROM drives on Intel-compatible machines, no operating system required. The cd includes many diagnostic utilities.'

Confirm the device is functional. Then you can use the information to setup device in Mandriva.

Gins · 02-07-2012, 10:17 AM

Thanks onebuck for the excellent comments.

UBCD Ultimate Boot CD is a tricky one. It gave me a the following file:
firefox-0.8.tar

How do I create a Boot CD using this file?
I used 'tar xvf firefox-0.8.tar' command.
It gave me an .exe file and some other rubbish.
Please tell me the way to make a Boot CD using this file.
.....................................................................
Knoppix and SystemRescueCd downloads were fine. They are .iso files; so the rest is a no-brainer.

onebuck · 02-07-2012, 11:04 AM

Hi,

Try this link: http://www.ultimatebootcd.com/download.html

Download the file then;

Quote:

After you have download the ISO image file, verify the integrity of the image by comparing the MD5/SHA1 checksum of the image with the values above. For more information about how to generate the image checksum, check out the wiki page on this topic.
Now you need to burn the ISO image to CD. This is another topic that frequently trips up newbies who are not familiar with their CD recording software, such as Nero or Easy CD Creator. Some of you end up burning the ISO file itself to the CD, or some other weird results.
The easiest way to burn the ISO file to CD is to use a small specialized freeware such as BurnCDCC or Active@ ISO Burner. For further assistance, refer to the tutorials section for help with burning the ISO image to CD with various popular CD recording software. Where possible, experiment with CDRW discs instead of CDR discs so that you can start over if something goes wrong, instead of churning out coasters.
After you have burnt the ISO image to CD, you should see the following structure on the CD if you have done it correctly:
c:\ubcd-extracted\
antivir\
boot\
pmagic\
ubcd\
autorun.inf
license.txt

Gins · 02-15-2012, 06:04 AM

Now sound works to a certain extent.
I played with those alsamixer commands and got it working.
It is not possible to stop the hum.
When I play a song from the YouTube, hum is a kind of a background nonsense.

It seems the hum has nothing to do with the sound card.
Your thoughts are welcome again. I want to stop the hum.

onebuck · 02-15-2012, 09:35 AM

Hi,

Problem could be the PSU with a leaking capacitor that can introduce signal nosie into the system to produce hum.

Gins · 02-15-2012, 10:33 AM

Thanks onebuck
How do I fix it?

I have forgotten to tell you all that I connect my computers to my stereo. I have done that since 2002. This has been working fine.
I bought an AV switch. This switch helps me to move to different computers.
The same goes with the printer. I bought an ATEN switch. This helps me to move to different computers.

I use only a single monitor to run 4 computers.
I bought a KVM switch. This switch helps me to use all the 4 computers.

onebuck · 02-15-2012, 11:31 AM

Hi,

Wow!

Now the picture has change. How do you have interconnection? RCA or shielded? Do you have the system grounds at the same level? Ground loop? Is the sound a low hiss or cyclic (possibly 60hz)?

Noise injection between devices, especially external systems like a stereo system can be the matching or hum that is introduced on top of the signal by the source. Unshielded cable can be a problem for longer leads.

How do you have the stereo & sound card connected? Which outputs to which inputs? Lead type. Do you have optical outputs for the sound card? Do you have optical inputs for the stereo? The use of optical would prevent injection problems from leads.

If the noise is from the computer PSU then the best way for a consumer is the change the PSU if that is the problem.

Another potential problem could be the computer system machine ground(chassis ground). What is the computer system manufacture & model? If homebrew then be sure your motherboard is chassis grounded properly. Some users will use plastic stand-offs and forget to chassis ground the motherboard.

I am just shooting in the dark now since you have not provided information to help. You have added information as we communicate.
HTH!

Gins · 02-20-2012, 11:52 AM

Thanks onebuck for taking time to reply me.
I started to listen to a song on YouTube.
Then I opened the console and tried some commands of 'alsmixer'. It started working.