From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: Issues with HP DV4 laptop sound after Ubuntu
	Jaunty	9.04 upgrade
Date: Mon, 04 May 2009 09:11:49 +0200
Message-ID: <s5h4ow19way.wl%tiwai@suse.de>
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To: Guy Stalnaker <jstalnak@wisc.edu>
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At Sat, 02 May 2009 23:57:42 -0500,
Guy Stalnaker wrote:
> 
> Hello again.
> 
> I was able to get my internal speakers working for my HP Pavilion Dv4
> laptop by following the advice I found in the alsa-devel archives.  That
> advice seems to have worked for quit a few people who found it by a post
> I made to the Ubuntu Forums.
> 
> But now, after I have upgraded my Ubuntu from version 8.10 (when sound
> worked) to version 9.04, sound no longer works correctly.  I have some
> detailed information about the sequencing and the specific error.
> Attached is an alsa-info.txt output.
> 
> Here's what I'm seeing (extracts from dmesg/kernel logs):
> 
> Apr 29 15:13:17 Harlindon kernel: [   19.937190] HDA Intel 0000:00:14.2:
> PCI INT A -> GSI 16 (level, low) -> IRQ 16
> Apr 29 15:13:17 Harlindon kernel: [   19.937270] HDA Intel 0000:00:14.2:
> setting latency timer to 64
> 
> Apr 30 09:37:09 Harlindon kernel: [   19.941675] HDA Intel 0000:00:14.2:
> PCI INT A -> GSI 16 (level, low) -> IRQ 16
> Apr 30 09:37:09 Harlindon kernel: [   19.941750] HDA Intel 0000:00:14.2:
> setting latency timer to 64
> 
> May  1 16:06:01 Harlindon kernel: [   19.852324] HDA Intel 0000:00:14.2:
> PCI INT A -> GSI 16 (level, low) -> IRQ 16
> May  1 16:06:01 Harlindon kernel: [   19.852398] HDA Intel 0000:00:14.2:
> setting latency timer to 64
> 
> May  1 16:13:43 Harlindon kernel: [   20.950985] HDA Intel 0000:00:14.2:
> PCI INT A -> GSI 16 (level, low) -> IRQ 16
> May  1 16:13:43 Harlindon kernel: [   20.951060] HDA Intel 0000:00:14.2:
> setting latency timer to 64
> 
> Commit Log for Fri May  1 16:41:58 2009 [Upgrade to Ubuntu Jaunty 9.04]
> 
> May  1 17:11:05 Harlindon kernel: [   20.318416] hda-intel: unable to
> grab IRQ 0, disabling device

This is pretty unusual.  Most likely either a BIOS or an ACPI problem,
has little to do with the sound driver itself.


Takashi