PPC Mac G4-Front Speaker Humming Noise

Yesterday I turned the CPU on as usual and then I started to hear a "buzz humming noise" coming out from the front speaker. I disconnected all my external devices, fix the permissions, Zap the Pram and the buzz continued for the entire day and through the night. I thought the front speaker had give up on me so I booked at the Genius Bar to replace it this morning. Shut down the CPU last night. Turned it back on this morning and the "buzz humming noise" totally disappear, vanish! I canceled my reservation at the "Genius Bar" but the whole issue got me a little concerned as to how that happened and then all of the sudden it vanished. That makes me think of a spyware or a security issue if anyone can provoke such a thing from any external meanings. Anyone have any thoughts on this? ...Or experienced such an issue similar to this one? Thanks!
Message was edited by: Eduardo B1

Hi everyone I just thought to come back here and answer to my own question since I found the bug that caused the humming noise on the CPU front speaker after all this time. It was that little Google Application called: "Google Notifier Appl." If you are having the same problem, delete that application. There is a bug there that interferes with the Computer Sound Board causing a terrible humming noise enough to annoy "da heck" of anyone. I Hope that helps!
Message was edited by: Eduardo B1

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ossinfo -v3 -a :
HD Audio play front /dev/oss/oss_hdaudio0/pcm0 (device index 0)
Legacy device /dev/dsp0
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
Out engine 1: 0/HD Audio play front
Available for use
Engine 2: 9/HD Audio play front (vmix)
Available for use
Engine 3: 10/HD Audio play front (vmix)
Available for use
Engine 4: 11/HD Audio play front (vmix)
Available for use
Engine 5: 12/HD Audio play front (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au01
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 8
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play rear /dev/oss/oss_hdaudio0/pcm1 (device index 1)
Legacy device /dev/dsp1
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 1/HD Audio play rear
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au02
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play center/LFE /dev/oss/oss_hdaudio0/pcm2 (device index 2)
Legacy device /dev/dsp2
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 2/HD Audio play center/LFE
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au03
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play side /dev/oss/oss_hdaudio0/pcm3 (device index 3)
Legacy device /dev/dsp3
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 3/HD Audio play side
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au04
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play pcm4 /dev/oss/oss_hdaudio0/pcm4 (device index 4)
Legacy device /dev/dsp4
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 4/HD Audio play pcm4
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au05
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdif-out /dev/oss/oss_hdaudio0/spdout0 (device index 5)
Legacy device /dev/dsp5
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 5/HD Audio play spdif-out
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au06
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio play spdifout /dev/oss/oss_hdaudio0/spdout1 (device index 6)
Legacy device /dev/dsp6
Caps: TRIGGER MMAP
Modes: OUTPUT
Out engine 1: 6/HD Audio play spdifout
Available for use
Input formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001410):
AFMT_S16_LE - 16 bit signed little endian
AFMT_AC3 - AC3 (Dolby Digital) encoded audio
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au07
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 192000 (44100,48000,88200,96000,192000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec mix /dev/oss/oss_hdaudio0/pcmin0 (device index 7)
Legacy device /dev/dsp7
Caps: DUPLEX TRIGGER MMAP
Modes: IN/OUT
In engine 1: 7/HD Audio rec mix
Available for use
Engine 2: 9/HD Audio play front (vmix)
Available for use
Engine 3: 10/HD Audio play front (vmix)
Available for use
Engine 4: 11/HD Audio play front (vmix)
Available for use
Engine 5: 12/HD Audio play front (vmix)
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au08
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 96000 (44100,48000,96000)
HW Type: Not indicated.
Minimum latency: Not indicated
HD Audio rec mix /dev/oss/oss_hdaudio0/pcmin1 (device index 8)
Legacy device /dev/dsp8
Caps: TRIGGER MMAP
Modes: INPUT
In engine 1: 8/HD Audio rec mix
Available for use
Input formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Output formats (0x00001010):
AFMT_S16_LE - 16 bit signed little endian
AFMT_S32_LE - 32 bit signed little endian
Device handle: PCI82fe1043-0000:00:1b.0-au09
Related mixer dev: 0
Sample rate source: 0
Preferred channel configuration: Not indicated
Supported number of channels (min - max): 2 - 2
Native sample rates (min - max): 44100 - 96000 (44100,48000,96000)
HW Type: Not indicated.
Minimum latency: Not indicated
/dev/dsp -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_in -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_out -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_ac3 -> /dev/oss/oss_hdaudio0/spdout0
/dev/dsp_mmap -> /dev/oss/oss_hdaudio0/pcm0
/dev/dsp_multich -> /dev/oss/oss_hdaudio0/pcm0
ossmix:
Selected mixer 0/High Definition Audio ALC888
Known controls are:
jack.green.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.green [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.green.mute ON|OFF (currently OFF)
jack.black.mode <front|rear|center/LFE|side|pcm4|input> (currently rear)
jack.black [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.black.mute ON|OFF (currently OFF)
jack.orange.mode <front|rear|center/LFE|side|pcm4|input> (currently center/LFE)
jack.orange [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.orange.mute ON|OFF (currently OFF)
jack.gray.mode <front|rear|center/LFE|side|pcm4|input> (currently pcm4)
jack.gray [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.gray.mute ON|OFF (currently ON)
jack.pink.mode <front|rear|center/LFE|side|pcm4|input> (currently input)
jack.pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.pink.mute ON|OFF (currently ON)
jack.fp-pink.mode <front|rear|center/LFE|side|pcm4|input> (currently input)
jack.fp-pink [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-pink.mute ON|OFF (currently ON)
jack.blue.mode <front|rear|center/LFE|side|pcm4|input> (currently input)
jack.blue [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.blue.mute ON|OFF (currently ON)
jack.fp-green.mode <front|rear|center/LFE|side|pcm4|input> (currently front)
jack.fp-green [<leftvol>:<rightvol>] (currently 29.9:29.9 dB)
jack.fp-green.mute ON|OFF (currently OFF)
record.mix.mute.mic1 ON|OFF (currently ON)
record.mix.mute.fp-mic1 ON|OFF (currently ON)
record.mix.mute.linein1 ON|OFF (currently ON)
record.mix.mute.fp-headphone1 ON|OFF (currently ON)
record.mix.mute.green1 ON|OFF (currently ON)
record.mix.mute.black1 ON|OFF (currently ON)
record.mix.mute.orange1 ON|OFF (currently ON)
record.mix.mute.gray1 ON|OFF (currently ON)
record.mix.mute.input-mix1 ON|OFF (currently ON)
record.mix1 [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
record.mix.mute.mic2 ON|OFF (currently ON)
record.mix.mute.fp-mic2 ON|OFF (currently ON)
record.mix.mute.linein2 ON|OFF (currently ON)
record.mix.mute.fp-headphone2 ON|OFF (currently ON)
record.mix.mute.green2 ON|OFF (currently ON)
record.mix.mute.black2 ON|OFF (currently ON)
record.mix.mute.orange2 ON|OFF (currently ON)
record.mix.mute.gray2 ON|OFF (currently ON)
record.mix.mute.input-mix2 ON|OFF (currently ON)
record.mix2 [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.mic [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.fp-mic [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.linein [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.fp-headphone [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.green [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.black [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.orange [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.gray [<leftvol>:<rightvol>] (currently 0.0:0.0 dB)
misc.input-mix <mic|fp-mic|linein> (currently linein)
misc.front-mute ON|OFF (currently OFF)
misc.input-mix-mute1 ON|OFF (currently ON)
misc.front1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.front2 <front|input-mix> (currently front)
misc.rear-mute ON|OFF (currently OFF)
misc.input-mix-mute2 ON|OFF (currently ON)
misc.rear1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.rear2 <rear|input-mix> (currently rear)
misc.center/lfe-mute ON|OFF (currently OFF)
misc.input-mix-mute3 ON|OFF (currently ON)
misc.center/lfe1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.center/lfe2 <center/LFE|input-mix> (currently center/LFE)
misc.side-mute ON|OFF (currently ON)
misc.input-mix-mute4 ON|OFF (currently ON)
misc.side1 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.side2 <side|input-mix> (currently side)
misc.pcm4-mute ON|OFF (currently ON)
misc.input-mix-mute5 ON|OFF (currently ON)
misc.pcm41 [<leftvol>:<rightvol>] (currently 38.9:38.9 dB)
misc.pcm42 <pcm4|input-mix> (currently pcm4)
vmix0-enable ON|OFF (currently ON)
vmix0-rate <decimal value> (currently 48000) (Read-only)
vmix0-channels <Stereo|Multich> (currently Multich)
vmix0-src <Fast|Low|Medium|High|High+|Production|OFF> (currently Fast)
vmix0-outvol <monovol> (currently 25.0 dB)
vmix0-invol <monovol> (currently 25.0 dB)
vmix0.pcm9 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm10 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm11 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
vmix0.pcm12 [<leftvol>:<rightvol>] (currently 25.0:25.0 dB)
I tried to turn everything off at record. Oh and this sound is only there when i play sound, not when i do nothing. Any ideas?

I'd like to use OSS instead of alsa - just for curiosity and for the rumored "better quality"
I followed wiki and got OSS working, except the same problem as stated above. First I get noise from right front speaker (pcm0) and second from spdout_std (the last one osstest testes). The second last one (spdout) gives good sound though, so I could symlink /dev/dsp to /dev/oss/oss_hdaudio0/spdout, but then how to get sound out from the optical SPDIFF output?
Has anybody solved this yet, or do I have to go back ALSA?

T3000 Speakers Making Humming Noise

I purchased a set of T3000 speakers the first part of December 2005. I was very pleased with them until recently. They now emit a humming noise that is proportional to the speaker volume (...if the speaker volume is turned up, the humming noise becomes louder; if the speaker volume is turned down, the humming noise becomes less). The noise makes it so nothing can be heard over the humming. The humming still exists with my computer powered off. I've also tried moving wires & cables to see if that would eliminate any interference, but that has no effect. Has anyone else had this problem?
I sent an email to Creative (now over a couple days ago) describing the problem/failure of these speakers, and inquired what I need to do to get warranty service. I received an automatic reply which stated their average response time is 1-2 working days. Has anyone else had warranty service done, and what was your experience?
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Welcome to the Forum, Ankur !
If you have just purchased the system from a retail dealer, it's under warranty - you can call or chat HP for support.
Hope this helps!
Kudos come to those who earn them!
EDITS 06-Nov-2011
No extra information has been received about this member's system.
I did find this and decided to share it in case it will help.
This is for NON beats-audio Notebooks.
Introduction (from the webpage):
Support details Some notebooks come with a subwoofer speaker for enhanced base tones. If your notebook has a subwoofer but it does not work or it makes a loud, crackling noise, do the following steps to resolve the problem.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02634956&cc=us&dlc=en&lc=en
End of Edits 06-Nov-2011
Kind Regards,
Dragon-Fur

62hm95 humming noise

my 62hm95 makes a humming noise even when I mute the volume and also when i cut it off i still hear the noise for about 5 minutes somebody HELP PLEASE

If you can't solve your issue and no one in the community can help, contact support to speak with a tech support agent at (800) 631-3811.
- Peter

Unpleasent humming noise

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I've had 3 other Macs before (see below) and NEVER heard ANY noise.
As far as I'm informed, the previous 27" iMac generation didn't have
this humming noise either.
Please answer ASAP - I have much work to do. Thanks!

There are two power supplies in the iMac starting with the Late 2009 models. One is the main power supply, the other steps up the voltage for the LED backlighting. The main PSU is a bit left of center on the top of the system, the other one runs along the left edge from pretty close to the top to about the middle of the system. One of those is likely defective.
While I'd put the odds as pretty low, the worst case scenario would be one of those catching fire and completely destroying the computer.
I'm no electrical engineer, so if there are any out there who want to disagree with what I'm about to say, I'd definitely defer to them. But I'd say the humming is probably a sign that the PSU is not having it's power flow regulated properly and somewhere there's a buildup/backup of energy. It could also be a lack of proper shielding that's creating a kind of sympathetic resonance. Lots of possibilities, but so long as the frequency/pitch of the sound is remaining constant... PROBABLY nothing to worry about in the next 2-3 days.
Again, I'll defer to any electrical engineers in the audience, but having worked as a hardware tech for around 2 years, I've run across people who have had loud PSUs for years with no obvious ill effects. I wouldn't recommend it myself, but there's at least anecdotal evidence to suggest it's more of an annoyance than anything.

Need to upgrade memory in ppc mac mini

Does anyone know of a step by step guide with pictures to installing memory in a ppc mac mini? Need to upgrade to a gig to use some graphics software. Thanks,
Steve

In sleep mode (STR) the RAM has to be refreshed to
keep the memory content, so the more you got the more
power will be consumed on this.
Having less ram will therefore benefit battery life
in sleep mode.
This is only of concern to portable users of course, and the additional RAM has barely any impact on power demand whether from mains-power or battery. Some admittedly, but not much. Nor would it be all that easy to tell what drain it caused since there are other variables involved with battery drain rates too, such as ambient temperature.
There is still room for improvement in whatever
algorithm it is that determines when "inactive"
memory is released. Paging frequently happens after
copying large files since all memory is in use and
"recently" so, even if this use is one where the
content is NOT likely to be needed again.
The much hyped idea that "old" inactive memory is
being released when more is needed I find it
difficult to confirm, or paging would not be needed.
Simply caching EVERYTHING does not in my mind count
as an "intelligent" algorithm..
As much as this may be valid, there is no way the user is able to change the algorithm - it's part of the operating system. As such, the user can really only take such steps as may be possible to improve the working of the system - one significant such step being adding RAM.
This can be cleared up by running "repair
permissions" in DU, since it seems to release much of
the inactive RAM. It would be much better to have a
small utility to do this, though, if making the OS
more intelligent is not an option.
Running disk utility may be an effective method of resolving memory allocations etc, but it then places the onus on the user to monitor the system and manually activate a process. Part of the appeal of MacOS to many people is that it removes much of the onus users of other operating systems feel is placed on them to keep tuning the system - activities which detract from the use of the system.
Ultimately, I have to say that I have never found the need to do anything of that sort. I do use MenuMeters (a very neat little app to place system monitoring tools in the menu bar and which uses barely any CPU overhead to do so) to watch the status of my system, but only as an occasional troubleshooting aid when I'm testing software or experimenting with the system. That is about as far as I go with anything other than using the system. Certainly, I've not found any need to perform the sort of tasks that are often being recommended, and even the systems I run 24/7 remain efficient in operation.
I can say that while my G4 was running off a 5400rpm drive, increasing RAM from 768Mb to 1.5Gb quite dramatically improved performance of both 10.4 and 10.2 but had little benefit in OS9 (all booting from separate drives). The effects were rather less noticeable after swapping out to 7200 drives instead.

Trying to share a printer attached to a PPC Mac Mini

Hi all.
I'm reinsterting an old Mac Mini running OS X 10.5.8 as a headless print server. I can interact with it via other computers to share the screen, so my network protocol with the computer is sound. My problem is, I can't seem to print to any printer attached to this computer--this is obviously a problem, as that's the whole reason I've revived this device.
Sharing setup for all computers is complete and the client computers don't seem to have any trouble seeing the printer. But when I print to it, the job is sent VERY quickly (suspiciously so) from my clients (a Mac Mini Intel in the living room and a MacBook), and the PPC mini shows no indication a print job was ever delivered.
Any brilliant ideas? I'm sure it's something really basic I'm not remembering or thinking about, and I'm sure someone has already asked this question; feel free to direct me to that solution, as my searching efforts didn't produce anything that I felt was helpful--but I've been wrong before.
Thanks!

OK then, please post a brand new question in the OS X 10.5.8 "Leopard" forum:
https://discussions.apple.com/community/mac_os/mac_os_x_v10.5_leopard
I no longer have a Leopard system to test and I used my one brilliant idea for today.
A new question should solicit more interest. Hopefully one of the old guard can think of something. Reference this thread so they can read what you did so far: Trying to share a printer attached to a PPC Mac Mini
Edit: Before you go, can you print to this printer while directly attached to the other computers too? Make sure it's not a simple driver problem. Good luck!
Message was edited by: John Galt

ITunes no longer supported on PPC MACS!!

This can't be right?? Apple is leaving all it's long time supporters using PPC macs out in the cold for future updates to iTunes? But they are still supporting Windows XP and up?? Please tell me this is just an oversight and a fix is coming. For those of you wondering about why iTunes will not update on your MAC, if you don't have a Intel machine, you are out of luck it seems.

Dosn't support the original iPad?
My mom had that problem but we went through it all and updated to ios 5 without any real problems. You do need to have the ipad connected to the computer to get the update for vsn 5
But it worked on her original iPad. There were some scary messages about it not being backed up and stuff for many of her apps. My theory is those apps weren't recognized by the older ios she was running.
Are you seeing this in the system requirements for ios 5?

PPC Mac G4-Front Speaker Humming Noise

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