Messages in this thread | | | Date | Thu, 02 Jul 2009 18:25:29 +0200 | From | Takashi Iwai <> | Subject | Re: snd_hda_intel on linux 2.6.30 |
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At Mon, 22 Jun 2009 20:49:09 +0100, Tony Hoyle wrote: > > Hi, > > I've been trying to get sound working on a Poulsbo board using 2.6.30. > Previously, with the available patches sound worked OK.
What kind of patches are they?
> 2.6.30 has most of the patches already in, and the the Intel HDA is > indeed recognized, but no sound appears. Boot logs show: > > [ 30.948427] HDA Intel 0000:00:1b.0: enabling device (0000 -> 0002) > [ 30.958108] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) > -> IRQ 16 > [ 30.968030] HDA Intel 0000:00:1b.0: setting latency timer to 64 > [ 31.192916] input: HDA Intel MID Line In at Ext Rear Jack as > /class/input/input3 > [ 31.204980] input: HDA Intel MID Mic at Ext Front Jack as > /class/input/input4 > [ 31.218872] input: HDA Intel MID Line Out at Ext Rear Jack as > /class/input/input5 > [ 31.234356] input: HDA Intel MID HP Out at Ext Front Jack as > /class/input/input6
These are all OK. The lines with "input" are for jack input layer.
> followed later by > > [ 50.875374] hda-intel: Invalid position buffer, using LPIB read > method instead. > [ 50.875416] hda-intel: IRQ timing workaround is activated for card > #0. Suggest a bigger bdl_pos_adj.
These are usually harmless.
> I tried backporting (forward porting?) the missing fixups from the older > patch, but apart from adding the message: > > [ 30.968039] Do fixup for Poulsbo <6>D0 or newer stepping > > I still didn't work (of course the possibility I stuffed up my patching > looms large there, and I'd rather work with virgin source if it's possible). > > What's the best way to go about debugging this? Is there an official > (or unofficial) patch for Poulsbo on 2.6.30 knocking around somewhere?
Run alsa-info.sh with --no-upload option on working (old) and non-working (2.6.30) kernels, and compare the generated files.
Takashi
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