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Date: Tue, 26 Sep 2006 12:16:33 +0200 From: Takashi Iwai <tiwai@...e.de> To: Jeremy Fitzhardinge <jeremy@...p.org> Cc: Pavel Machek <pavel@...e.cz>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, alsa-devel@...a-project.org, Andrew Morton <akpm@...l.org> Subject: Re: 2.6.18: hda_intel: azx_get_response timeout, switching to single_cmd mode... At Mon, 25 Sep 2006 12:58:08 -0700, Jeremy Fitzhardinge wrote: > > I have a ThinkPad X60 which uses the Intel 82801G HDA audio chip. This > used to work for me, but lately (sometime during 2.6.18-rcX series) it > stopped working - programs trying to use it tend to just block forever > waiting for /dev/dsp. > > The only obvious symptom is: > > hda_intel: azx_get_response timeout, switching to single_cmd mode... > > appearing in the kernel log when booting. > There is no big change relevant to TP X60 during 2.6.18rc, so I don't think it's a regression in the hd-audio driver code. > Details attached. The dmesg output is for the FC6 distro kernel > 2.6.18-1.2689.fc6PAE, but I see the same symptoms with 2.6.18-mm1. You must see difference with mm1 (suppose that mm1 already includes the latest ALSA patches). When the CORB/RIRB interrupt gets broken, the driver first switches to poling mode, then single_cmd mode as fallback. Also, try disable_msi=1 option for mm1. MSI seems broken on some systems. 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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