On Sat, 27 Feb 2016, Linus Torvalds wrote:
> On Sat, Feb 27, 2016 at 1:52 PM, Cristian Ionescu-Idbohrn
> <cristian.ionescu-idbo...@axis.com> wrote:
> > Background: https://bugs.debian.org/815787
> >
> > "Until recently the Sound Blaster Live! card in my workstation worked
> > fine. Sometime recently it has stopped working."
> >
> > On Sat, 27 Feb 2016, Ben Hutchings wrote:
> >> On Sat, 2016-02-27 at 10:39 +0100, Cristian Ionescu-Idbohrn wrote:
> >> >
> >> > No mention of that in the changelog.
> >>
> >> Yes there is:
> >>
> >> * [amd64] mm,nvdimm: Disable ZONE_DMA; enable ZONE_DEVICE, NVDIMM_PFN
> >> - This disables drivers for some AC'97 sound cards
> >
> > Alright, but not obvious to me.
> >
> > So, what is to do about that?
>
> If I read this right, this seems to be a Debian kernel configuration
> choice rather than anything else.
>
> Does it work if you just compile your own kernel?
Wooh. That was fast ;) I'll try to beat Ben to it ;) Tomorrow...
Too late now.
Still, I really wonder what the debian changelog motivation behind it
might be. Various applications work much nicer with 4.3.5-1, than
ever. I read in the kernel log:
commit 5c408fee254633a5be69505bc86c6b034f871ab4
Author: Maciej S. Szmigiero <m...@maciej.szmigiero.name>
Date: Mon Jan 18 20:07:44 2016 +0100
...
This fixes hard lockup on fsl_ssi module reload,
at least in AC'97 mode.
...
commit 3f1c241f0f5f90046258e6b8d4aeb6463ffdc08e
Author: Maciej S. Szmigiero <m...@maciej.szmigiero.name>
Date: Sun Dec 20 21:30:25 2015 +0100
...
This unbreaks AC'97 register access.
...
commit 25e5ef974c33f1e4a07a68bf830e6493ee6dab11
Author: Maciej S. Szmigiero <m...@maciej.szmigiero.name>
Date: Sun Dec 20 21:34:29 2015 +0100
...
ASoC: fsl-asoc-card: use different route map for AC'97 mode
fsl_ssi uses different stream names ("AC97 Playback" / "AC97 Capture")
in AC'97 mode so in this case fsl-asoc-card route map should
also be using them.
But, I can't see that _does explain_ the:
* [amd64] mm,nvdimm: Disable ZONE_DMA; enable ZONE_DEVICE, NVDIMM_PFN
- This disables drivers for some AC'97 sound cards
nor justifies the action. Ben, care to explain?
Cheers,
--
Cristian
