From: Pavel Machek <pavel@ucw.cz>
To: pali.rohar@gmail.com, sre@kernel.org,
kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
patrikbachan@gmail.com, serge@hallyn.com
Subject: Can not play audio with screen off
Date: Sun, 15 May 2016 21:31:06 +0200 [thread overview]
Message-ID: <20160515193106.GA18685@amd> (raw)
Hi!
I'm playing some more with N900, this time I'd like to use it as a
alarm clock...
And now I realized I can not, because system performance is so
horrible with screen off that mpg123 + pulseaudio skips horribly. This
is without tweaking serial parameters, so CPU is definitely not going
into the idle/off modes.
Loading CPU fixes the issue (I used cat /dev/zero > /dev/null).
Hmm. And it seems to work better if I ssh in and launch mpg123
remotely. Weird.
Kernel 4.5-rc0. Will try on different ones.
Any ideas? Is there interface to tell kernel that better performance
is needed for a while?
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: Can not play audio with screen off
Date: Sun, 15 May 2016 21:31:06 +0200 [thread overview]
Message-ID: <20160515193106.GA18685@amd> (raw)
Hi!
I'm playing some more with N900, this time I'd like to use it as a
alarm clock...
And now I realized I can not, because system performance is so
horrible with screen off that mpg123 + pulseaudio skips horribly. This
is without tweaking serial parameters, so CPU is definitely not going
into the idle/off modes.
Loading CPU fixes the issue (I used cat /dev/zero > /dev/null).
Hmm. And it seems to work better if I ssh in and launch mpg123
remotely. Weird.
Kernel 4.5-rc0. Will try on different ones.
Any ideas? Is there interface to tell kernel that better performance
is needed for a while?
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next reply other threads:[~2016-05-15 19:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-15 19:31 Pavel Machek [this message]
2016-05-15 19:31 ` Can not play audio with screen off Pavel Machek
2016-05-16 14:22 ` Nishanth Menon
2016-05-16 14:22 ` Nishanth Menon
2016-05-16 14:22 ` Nishanth Menon
2016-05-16 15:06 ` Pavel Machek
2016-05-16 15:06 ` Pavel Machek
2016-05-24 19:49 ` Pavel Machek
2016-05-24 19:49 ` Pavel Machek
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