At Wed, 03 Aug 2011 16:41:08 -0500, Larry Finger wrote:
In the latest git pull of 3.0-git from Linus's tree, the sound on my HP laptop does not work. This problem was bisected to the commit in the subject.
The lspci output for my sound device is:
00:07.0 Audio device [0403]: nVidia Corporation MCP67 High Definition Audio [10de:055c] (rev a1) Subsystem: Hewlett-Packard Company Device [103c:30d6] Kernel driver in use: snd_hda_intel
I further isolated the problem to the following hunk:
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 6e90b6b..4ca880b 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -1994,10 +1990,8 @@ static int patch_cxt5051(struct hda_codec *codec) board_config = snd_hda_check_board_config(codec, CXT5051_MODELS, cxt5051_models, cxt5051_cfg_tbl); -#if 0 /* use the old method just for safety */ if (board_config < 0)
board_config = CXT5051_AUTO;-#endif
board_config = CXT5051_AUTO; /* model=auto as default */ if (board_config == CXT5051_AUTO) return patch_conexant_auto(codec);In my case, snd_hda_check_board_config() returns -1. Thus, the new code returns the value of patch_conexant_auto(), whereas the original version fell through to the setup code below. Clearly, this is needed for my device.
And reverting the above fixes your problem, right? Then please give alsa-info.sh outputs on both working and non-working kernels (run with --no-upload option).
thanks,
Takashi