Distorted sound/input on iMac G3 bondi blue!
Hey, I installed Xubuntu on my old iMac G3 350 MHz Power PC slot-loading bondi blue model. The main purpose of this being to set this computer as a recording device.
But.. the sound input AND output (speakers, sound in jack, sound out jack) are all distorted - not terribly, but not clean at all. this won't do for recording and listening to music isn't as enjoyable.
Since it's both input and output - and in the headphone jack output too, I'm thinking it's a sound card issue, lack of config perhaps.
I ran a few commands and here's what I got so far:
Code:teagankelk@kelkimac:~$ lspci 0000:00:0b.0 Host bridge: Apple Computer Inc. UniNorth AGP 0000:00:10.0 Display controller: ATI Technologies Inc Rage 128 RL/VR AGP 0001:10:0b.0 Host bridge: Apple Computer Inc. UniNorth PCI 0001:10:17.0 Class ff00: Apple Computer Inc. KeyLargo Mac I/O (rev 02) 0001:10:18.0 USB Controller: Apple Computer Inc. KeyLargo USB 0001:10:19.0 USB Controller: Apple Computer Inc. KeyLargo USB 0002:20:0b.0 Host bridge: Apple Computer Inc. UniNorth Internal PCI 0002:20:0f.0 Ethernet controller: Apple Computer Inc. UniNorth GMAC (Sun GEM)Code:teagankelk@kelkimac:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Screamer [PowerMac Screamer], device 0: PMac Screamer [PowerMac Screamer] Subdevices: 1/1 Subdevice #0: subdevice #0The distortion seems to minimize when i turn everything's volume down and use an external source to amplify it... so that's why everything's turned down in the following config to 0. NOTE THAT FOR SOME REASON, 0 is not mute. this applies to the capture and playback channels. both of them are still getting fair volumes at 0, both distorted slightly.Code:teagankelk@kelkimac:~$ cat /proc/asound/cards 0 [Screamer ]: PMac Screamer - PowerMac Screamer PowerMac Screamer Rev 0
possibly related to this bug report - https://bugs.launchpad.net/alsa-utils/+bug/16454
Code:teagankelk@kelkimac:~$ amixer Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined cswitch cswitch-joined Playback channels: Front Left - Front Right Capture channels: Mono Limits: Playback 0 - 15 Mono: Capture [off] Front Left: Playback 0 [0%] [on] Front Right: Playback 0 [0%] [on] Simple mixer control 'Headphone Detection',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Line',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [on] Simple mixer control 'CD',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [off] Simple mixer control 'Mic',0 Capabilities: cswitch cswitch-joined Capture channels: Mono Mono: Capture [off] Simple mixer control 'Mic Boost',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 2 Mono: 0 [0%] Simple mixer control 'PC Speaker',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 15 Mono: Front Left: Playback 0 [0%] [off] Front Right: Playback 0 [0%] [off] Simple mixer control 'Capture',0 Capabilities: cvolume Capture channels: Front Left - Front Right Limits: Capture 0 - 15 Front Left: Capture 0 [0%] Front Right: Capture 0 [0%] Simple mixer control 'Auto Mute',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Beep',0 Capabilities: pvolume pvolume-joined Playback channels: Mono Limits: Playback 0 - 100 Mono: Playback 20 [20%]I wonder if it's also reltaed to this bug topic - https://lists.ubuntu.com/archives/ub...er/049161.html .Code:teagankelk@kelkimac:/proc/asound$ cat modules 0 snd_powermac teagankelk@kelkimac:/proc/asound$ cat modules 0 snd_powermac teagankelk@kelkimac:/proc/asound$ cat modules 0 snd_powermac
PLEASE HELP. I'm considering switching back to mac os. the sound is the most important thing about this computer, it's meant for recording.
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