Closing this bug with Won't fix as this kernel is no longer supported.
Please feel free to open a new bug report if you're still experiencing this on
a newer release (Bionic 18.04.3 / Disco 19.04)
Thanks!
** Changed in: linux (Ubuntu)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/234165
Title:
Jaunty Alpha 5, Hardy: Sound level low, poor sound quality on Macbook
Pro
Status in linux package in Ubuntu:
Won't Fix
Bug description:
One of the reasons for purchasing a Macbook has been its very good speakers,
using OS X they sound louder than any other notebook I've owned, good bass, low
noise. Using Ubuntu on the same system, I get a somewhat "metallic" distortion,
and the maximum output level is way below the one on OS X. Alsa appears to
work, pommed controls the Fn keys, but I only get 3 usable steps in the sound
mixer (80,90 and 100%), below those it's almost muted.
Kernel 2.6.24-16-generic, all available updates installed.
lspci -v:
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
Subsystem: Apple Computer Inc. Unknown device 00a0
Flags: bus master, fast devsel, latency 0, IRQ 19
Memory at 9b500000 (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
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