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Message-ID: <s5hk4wfz7tm.wl%tiwai@suse.de> Date: Tue, 22 Dec 2009 10:17:25 +0100 From: Takashi Iwai <tiwai@...e.de> To: Éric Piel <eric.piel@...mplin-utc.net> Cc: Maciej Rutecki <maciej.rutecki@...il.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, alsa-devel@...a-project.org, perex@...ex.cz, "Rafael J. Wysocki" <rjw@...k.pl> Subject: Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise At Tue, 22 Dec 2009 10:15:20 +0100, Éric Piel wrote: > > Op 22-12-09 08:04, Takashi Iwai schreef: > > At Mon, 21 Dec 2009 20:08:34 +0100, > > Éric Piel wrote: > : > >> Could it be coming from this timeout? > > > > It shouldn't. The polling mode doesn't give any behavioral change, > > and the CPU usage can't be that high. > > > > Try is to pass bdl_pos_adj=0 option. This should reduce the CPU hog, > > at least. But it doesn't mean it's the right fix... > I'll try > > > > > Another thing to try is to replace the whole HD-audio stack with the > > last working one (was it 2.6.32?), and check whether it works with > > 2.6.32 core. > Could you give more details on how to do this? > Does it consist in taking the sound/ directory of 2.6.32 and copying it > over 2.6.33-rc1 ? Or less files? I'd try first only sound/pci/hda/* files. Takashi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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