Re: linux-next - strange audio bug

From: Takashi Iwai
Date: Sat Apr 04 2015 - 08:37:27 EST

At Thu, 02 Apr 2015 20:34:35 -0400,
Valdis Kletnieks wrote:
> Next-20150310 works OK, next-20150324 has the bug.
> Dell Latitude E6530 laptop, lspci tells me:
> 01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
> Subsystem: Dell Device 0535
> ...
> Kernel driver in use: snd_hda_intel
> Symptoms: Audio works perfectly at boot, and for some amount
> of time after. But somewhere around 6-8 hours of uptime, it gets
> into a strange state where I'll get no audio... and then it will
> cut in for all of 2 seconds or so (fairly consistent, that part),
> and then cut back out for anywhere from 10 seconds to a minute,
> then another 2 seconds of sound.. lather rinse repeat.
> Before I start the thankless task of bisecting this (which means I'll
> be able to do only 1, *maybe* 2 steps a day), does this ring any bells?

Try for-next branch of sound git tree

Now I merged fixes that might be relevant with the runtime PM on some
codecs, so it might work better.

In anyway, please give outputs at good and bad-working


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at