Hi. This is a shot in the dark, but it is possible that PulseAudio is
preventing sound from working. I don't understand why, but that's happened
to me many times on several Linux boxes, and the only cure I've found is
simply to uninstall it - and then uninstall it again when it gets
reinstalled as a dependency for some other package. So I would suggest
disabling PulseAudio temporarily to see what happens. You really shouldn't
have to uninstall Pulse, but that's what has worked for me.
On Sat, Nov 25, 2017 at 5:19 PM, <chan...@abdillah.me> wrote:
>
> Hi all,
>
> I have a Macbook Pro 11,2 (with Cirrus CS4208) with Linux installed. I use
> alsa with pulseaudio server. Before, I have experienced a problem with the
> sound and then follow the instruction here (
> https://askubuntu.com/questions/392688/macbook-pro-11-2-no-
> sound-with-ubuntu-13-10 ) and the sound works.
>
> But now, after a system upgrade, this no longer the case. My hardware is
> doing fine on other OS. I've,
>
> (1) testing `aplay`, `play` command,
> (2) adjusting `alsamixer`,
> (3) sending many `hda-verb` (randomly experimenting from the above),
> (4) changing `modprobe snd_hda_intel` model param (
> https://01.org/linuxgraphics/gfx-docs/drm/sound/hd-audio/mod
> els.html#cirrus-logic-cs4208 )
>
> .. and yet no sound.
>
> How I can test further about this problem? To actually see where's the
> fault.
>
>
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