linux-kernel - [regression] Sound not transferred to docking station after resume from StR

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Message-Id: <201004162131.19171.elendil@planet.nl>
Date:	Fri, 16 Apr 2010 21:31:18 +0200
From:	Frans Pop <elendil@...net.nl>
To:	linux-kernel@...r.kernel.org
Cc:	linux-pm@...ts.linux-foundation.org, alsa-devel@...a-project.org,
	Takashi Iwai <tiwai@...e.de>
Subject: [regression] Sound not transferred to docking station after resume from StR

Scenario:
- suspend laptop while *un*docked, i.e. with laptop speakers in use
- dock laptop
- resume

With 2.6.33 and earlier the sound would always come from the external 
speakers connected to the docking station. But with 2.6.34-rc4 I get sound 
still coming from the laptop's internal speakers, which is not correct.

System: HP 2510p running Debian stable ("Lenny")
Sound driver: snd_hda_intel; codec: AD1981

Attached my kernel config for .34, and dmesg output for both .33 and .34 
showing:
- boot (docked)
- undocking (visible as several USB disconnects)
- suspend
- resume after docking

I don't see any significant changes in dmesg output during resume.

I'll do a bisect, unless someone has some idea what may be causing this.


Download attachment "2.6.33-rc8-suspend.gz" of type "application/x-gzip" (11653 bytes)

Download attachment "2.6.34-rc4-suspend.gz" of type "application/x-gzip" (12358 bytes)

View attachment "config-2.6.34-rc4" of type "text/plain" (78228 bytes)