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Can installing a Windows sound driver affect how ALSA works?
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VinzC
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PostPosted: Thu Aug 09, 2012 6:34 pm    Post subject: Can installing a Windows sound driver affect how ALSA works? Reply with quote

Hi all.

My machine has an Intel HDA sound chip (ALC887-VD) of which I am using exclusively the SPDIF output.

Today after my machine booted I noticed I had no sound going through the SPDIF output although it did yesterday. All I did yesterday was boot Windows and check for surround sound in Windows. It didn't work so I installed updated drivers from Realtek and check surround sound. Failed too. Nevermind, usual Windows voodoo/magic crap... *sighs*

So today when I noticed there was (again) no sound in Linux (it already happened before) I tried to update my .asoundrc file to the following:
~/.asoundrc:
pcm.!default spdif

Before that it contained
~/.asoundrc:
pcm.!default { type hw card PCH }
ctl.!default { type hw card PCH }

and it worked for a couple of days.

This is the only "potentially risky" action I could reasonably correlate with the issue. Do you think it makes sense?
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PaulBredbury
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PostPosted: Thu Aug 09, 2012 6:43 pm    Post subject: Reply with quote

The BIOS can remember its state across reboots. Only way to be sure is to disconnect its power (and remove a laptop's battery while off - example).
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VinzC
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PostPosted: Thu Aug 09, 2012 7:17 pm    Post subject: Reply with quote

Thanks Paul. I however fail to clearly understand how the example you pointed at illustrates this issue but I'll power off the machine again.

Strangely enough I also got a boot message «Machine Check Error» again instead of extlinux boot menu immediately after I installed the drivers in Windows and rebooted... Both these issues might relate to each other as well, I guess, right?
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PaulBredbury
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PostPosted: Thu Aug 09, 2012 7:25 pm    Post subject: Reply with quote

Yeah, my example wasn't clear. To clarify, it was necessary to physically remove the battery from the laptop, for it to reset enough to boot again - just removing the power cable was not enough.

Sounds like you should check for an updated BIOS for your PC, also.
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VinzC
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PostPosted: Thu Aug 09, 2012 7:31 pm    Post subject: Reply with quote

PaulBredbury wrote:
Sounds like you should check for an updated BIOS for your PC, also.

Ah... «Ship first, fix later» or when the worst habits contaminate the whole world of computer technologies... :roll: We've entered an era it's a normal thing to pay for acquiring defective products.

(EDIT: I bought this machine in April or so...)
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krinn
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PostPosted: Thu Aug 09, 2012 9:33 pm    Post subject: Reply with quote

Or just because of the QA tests are now flaws by design :

What if you build a computer that will only run on windows and test under windows ? You may endup with a product that is not 100% standard with flaws, but still works 100% in that OS unaffect by the flaws.
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