On Fri, 31 Aug 2007 21:58:22 PDT, Andrew Morton said: > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc4/2.6.23-rc4-mm1/ git-alsa.patch breaks audio on my laptop, worked fine in -rc3-mm1. Almost certainly bustification in the Intel HDA rewrite. Symptoms: alsamixer finds the chipset, can adjust the volumes and mute/unmute, and /usr/bin/play is able to write a .wav to the ALSA device without complaint. However, no sound actually comes out. Very "lights are on but nobody is home". Dell Latitude D820, lspci reports: 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) and alsamixer reports finding a "SigmaTel STAC9200" % grep HDA_ .config CONFIG_SND_HDA_INTEL=y # CONFIG_SND_HDA_HWDEP is not set CONFIG_SND_HDA_CODEC_REALTEK=y CONFIG_SND_HDA_CODEC_ANALOG=y CONFIG_SND_HDA_CODEC_SIGMATEL=y # CONFIG_SND_HDA_CODEC_VIA is not set # CONFIG_SND_HDA_CODEC_ATIHDMI is not set # CONFIG_SND_HDA_CODEC_CONEXANT is not set # CONFIG_SND_HDA_CODEC_CMEDIA is not set # CONFIG_SND_HDA_CODEC_SI3054 is not set CONFIG_SND_HDA_GENERIC=y # CONFIG_SND_HDA_POWER_SAVE is not set dmesg under -rc4-mm1: Advanced Linux Sound Architecture Driver Version 1.0.14 (Fri Jul 20 09:12:58 2007 UTC). ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 21 (level, low) -> IRQ 21 hda_intel: position_fix set to 1 for device 1028:01cc ALSA device list: #0: HDA Intel at 0xefffc000 irq 506 dmesg under -rc3-mm1: Advanced Linux Sound Architecture Driver Version 1.0.14 (Fri Jul 20 09:12:58 2007 UTC). ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 21 (level, low) -> IRQ 21 hda_intel: position_fix set to 1 for device 1028:01cc ALSA device list: #0: HDA Intel at 0xefffc000 irq 506 (Yes, they look the same to me, too...) I'd provide more info, if I had a clue what else to add...
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