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Sound through speakers on iBook G4 (headphones work!!)
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deephack1982
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PostPosted: Tue Sep 13, 2005 12:42 pm    Post subject: Sound through speakers on iBook G4 (headphones work!!) Reply with quote

Hello all,

Just wondering if anyone has managed to get sound out of the speakers on the newest iBook G4? I can get sound if I plug in headphones and it is clear and loud but the moment I take the headphones out I get silence again.

I'm running kernel 2.6.12, ALSA 1.0.9b. Here is some info on my machine

cat /proc/cpuinfo
processor : 0
cpu : 7447A, altivec supported
clock : 1333MHz
revision : 0.2 (pvr 8003 0102)
bogomips : 1327.10
machine : PowerBook6,7
motherboard : PowerBook6,7 MacRISC3 Power Macintosh
detected as : 287 (Unknown Intrepid-based)
pmac flags : 00000008
L2 cache : 512K unified
memory : 512MB
pmac-generation : NewWorld

lspci
0000:00:0b.0 Host bridge: Apple Computer Inc. UniNorth 2 AGP
0000:00:10.0 VGA compatible controller: ATI Technologies Inc M11 NV [FireGL Mobility T2e] (rev 80)
0001:10:0b.0 Host bridge: Apple Computer Inc. UniNorth 2 PCI
0001:10:12.0 Network controller: Broadcom Corporation: Unknown device 4318 (rev 02)
0001:10:17.0 Class ff00: Apple Computer Inc. KeyLargo/Intrepid Mac I/O
0001:10:18.0 USB Controller: Apple Computer Inc. KeyLargo/Intrepid USB
0001:10:19.0 USB Controller: Apple Computer Inc. KeyLargo/Intrepid USB
0001:10:1a.0 USB Controller: Apple Computer Inc. KeyLargo/Intrepid USB
0001:10:1b.0 USB Controller: NEC Corporation USB (rev 43)
0001:10:1b.1 USB Controller: NEC Corporation USB (rev 43)
0001:10:1b.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
0002:20:0b.0 Host bridge: Apple Computer Inc. UniNorth 2 Internal PCI
0002:20:0d.0 Class ff00: Apple Computer Inc. UniNorth/Intrepid ATA/100
0002:20:0e.0 FireWire (IEEE 1394): Apple Computer Inc. UniNorth 2 FireWire (rev 81)
0002:20:0f.0 Ethernet controller: Apple Computer Inc. UniNorth 2 GMAC (Sun GEM) (rev 80)
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JoseJX
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PostPosted: Tue Sep 13, 2005 12:59 pm    Post subject: Reply with quote

Check alsamixer and make sure that your pc speaker volume is set. This should control the speaker volume.
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deephack1982
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PostPosted: Tue Sep 13, 2005 1:02 pm    Post subject: Reply with quote

It's already at max I'm afraid. Also tried all the different combinations of the switches in alsa mixer too. I think it may be something peculiar to this model as the instructions for other G4 iBooks don't seem to work. This model is new as of about a month ago. Also I just realized I didn't mention the model, it's the 12" G4 iBook 1.33Ghz.

Thanks for the reply!
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JoseJX
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PostPosted: Tue Sep 13, 2005 1:18 pm    Post subject: Reply with quote

Can you specify which sliders are available in alsamixer?
Are you sure the pc speaker option isn't muted?
Are there any errors in dmesg when the ALSA driver is loaded?
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deephack1982
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PostPosted: Tue Sep 13, 2005 1:52 pm    Post subject: Reply with quote

Hi JoseJX,

Yes I have in alsamixer the following sliders:-

Master, PC Speaker, Beep, Capture

They are all turned up, I haven't muted any of the channels.

I don't get anything with regards to sound that I can see in the dmesg and here is the relevant part from my lsmod:-

snd_powermac 46436 2
snd_pcm 95684 1 snd_powermac
snd_timer 23908 1 snd_pcm
snd 53716 7 snd_powermac,snd_pcm,snd_timer
soundcore 8356 1 snd
snd_page_alloc 8388 1 snd_pcm

Thanks for the help!
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regeurk78
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PostPosted: Tue Sep 13, 2005 7:34 pm    Post subject: Reply with quote

@Deephack: I think you have the same problemes like me and others, see https://forums.gentoo.org/viewtopic-p-2648064-highlight-.html I think they changed the hardware and the old drivers don't seem to work anymore.
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deephack1982
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PostPosted: Wed Sep 14, 2005 4:41 pm    Post subject: Reply with quote

Aha, good stuff. I thought it may be something like this. I'll hang by for new drivers then and use headphones in the meantime. Thanks for the info!
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