From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Can not play audio with screen off Date: Sun, 15 May 2016 21:31:06 +0200 Message-ID: <20160515193106.GA18685@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , 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 List-Id: linux-omap@vger.kernel.org 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