From: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, bp@alien8.de, hch@infradead.org,
Christoph Hellwig <hch@lst.de>,
hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com,
Pavel Machek <pavel@ucw.cz>,
perex@perex.cz, rientjes@google.com, tglx@linutronix.de,
tiwai@suse.com, x86@kernel.org
Subject: Re: next-0519 on thinkpad x60: sound related? window manager crash
Date: Sun, 14 Jun 2020 08:07:48 -0400 [thread overview]
Message-ID: <1592135950.lcpn6p9fh0.none@localhost> (raw)
In-Reply-To: <s5hv9ju9dmd.wl-tiwai@suse.de>
Excerpts from Takashi Iwai's message of June 14, 2020 5:54 am:
> On Sat, 13 Jun 2020 18:25:22 +0200,
> Alex Xu (Hello71) wrote:
>>
>> Excerpts from Takashi Iwai's message of June 11, 2020 1:11 pm:
>> > Thanks, so something still missing in the mmap handling, I guess.
>> >
>> > I've worked on two different branches for potential fixes of your
>> > problems. Could you test topic/dma-fix and topic/dma-fix2 branches?
>> > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
>> > Just pull one of them onto Linus' git HEAD.
>> >
>> > I guess we'll go with David's new patch, but still it's interesting
>> > whether my changes do anything good actually.
>> >
>> >
>> > Takashi
>> >
>>
>> On torvalds 623f6dc593, topic/dma-fix causes sound to be output as
>> alternating half-second bursts of noise and a few seconds of silence.
>> topic/dma-fix2 appears to work properly.
>
> OK, thanks for the feedback! Just to make sure, you're using
> PulseAudio, right?
> If so, it was still something wrong about mmap, and the secondary
> method (the fallback to the continuous page) looks like a safer
> approach in the end.
>
> I suppose that David's fix will be merged sooner or later. Meanwhile
> I'll work on the change in the sound driver side to make things a bit
> more robust. They don't conflict and both good applicable.
>
>
> thanks,
>
> Takashi
>
Ah, no, I think that wasn't clear. I use ALSA directly with mostly
default configuration, except an asym sets separate default playback and
record devices.
asound.conf:
defaults.pcm.card 1
defaults.ctl.card 1
pcm.!default {
type asym
playback.pcm
{
type plug
slave.pcm "dmix"
}
capture.pcm
{
type plug
slave.pcm {
type dsnoop
ipc_key 6793
slave.pcm "hw:U0x46d0x81d"
}
}
}
I think I wasn't able to set defaults.pcm.dmix.card and
defaults.pcm.dsnoop.card for some reason, not sure why. I can try that,
but I don't think it will affect this mmap issue.
Thanks,
Alex.
next prev parent reply other threads:[~2020-06-14 12:08 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-20 11:11 next-0519 on thinkpad x60: sound related? window manager crash Pavel Machek
2020-05-20 11:37 ` Takashi Iwai
2020-05-20 11:39 ` Pavel Machek
2020-05-20 11:43 ` Takashi Iwai
2020-06-07 15:58 ` Alex Xu (Hello71)
2020-06-07 16:38 ` 82fef0ad811f "x86/mm: unencrypted non-blocking DMA allocations use coherent pools" was " Pavel Machek
2020-06-07 19:41 ` David Rientjes
2020-06-07 22:53 ` Alex Xu (Hello71)
2020-06-08 0:57 ` David Rientjes
2020-06-08 2:13 ` Alex Xu (Hello71)
2020-06-08 6:19 ` Christoph Hellwig
2020-06-08 13:53 ` Alex Xu (Hello71)
2020-06-09 2:31 ` David Rientjes
2020-06-09 5:43 ` Christoph Hellwig
2020-06-09 8:05 ` Takashi Iwai
2020-06-09 8:43 ` Christoph Hellwig
2020-06-09 9:09 ` Takashi Iwai
2020-06-09 9:17 ` Christoph Hellwig
2020-06-09 9:31 ` Takashi Iwai
2020-06-09 11:02 ` Takashi Iwai
2020-06-09 11:31 ` Christoph Hellwig
2020-06-09 11:38 ` Takashi Iwai
2020-06-09 11:40 ` Christoph Hellwig
2020-06-09 11:45 ` Takashi Iwai
2020-06-09 11:49 ` Christoph Hellwig
2020-06-09 13:16 ` Jaroslav Kysela
2020-06-10 5:26 ` David Rientjes
2020-06-10 7:14 ` Christoph Hellwig
2020-06-09 11:47 ` Christoph Hellwig
2020-06-09 15:12 ` Takashi Iwai
[not found] ` <<s5hr1uogtna.wl-tiwai@suse.de>
2020-06-11 14:51 ` Alex Xu (Hello71)
2020-06-11 17:11 ` Takashi Iwai
2020-06-13 16:25 ` Alex Xu (Hello71)
2020-06-14 9:54 ` Takashi Iwai
2020-06-14 12:07 ` Alex Xu (Hello71) [this message]
2020-06-14 15:40 ` Takashi Iwai
2020-06-11 14:51 ` Alex Xu (Hello71)
[not found] <20200520110900.GA8203@amd>
2020-05-21 7:41 ` Pavel Machek
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