git bisect start
# bad: [c3b92c8787367a8bb53d57d9789b558f1295cc96] Linux 3.1
git bisect bad c3b92c8787367a8bb53d57d9789b558f1295cc96
# good: [b9a7985a8d9ca00d8ce977756fde1306c9ab1e41] Linux 3.0.44
git bisect good b9a7985a8d9ca00d8ce977756fde1306c9ab1e41
# good: [02f8c6aee8df3cdc935e9bdd4f2d020306035dbe] Linux 3.0
git bisect good 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe
# bad: [138051659902da7e6a09d379fee5dade2a80fcfd] Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6
git bisect bad 138051659902da7e6a09d379fee5dade2a80fcfd
# good: [9d1c02135516866cbbb2f80e20cfb65c63a3ce40] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
git bisect good 9d1c02135516866cbbb2f80e20cfb65c63a3ce40
# bad: [ae4c42e4e4d76d003f8ca551fe1aef93ff9a4b21] Merge branch 'next/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
git bisect bad ae4c42e4e4d76d003f8ca551fe1aef93ff9a4b21
# bad: [ff0c4ad2c3a75ccfe6adca916e50804eb45bb2d9] Merge branch 'for-upstream' of git://openrisc.net/jonas/linux
git bisect bad ff0c4ad2c3a75ccfe6adca916e50804eb45bb2d9
# bad: [e4980371059ca4a81ccdcb4381c41af8869ca711] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
git bisect bad e4980371059ca4a81ccdcb4381c41af8869ca711
# good: [13b137ef0367237909bb2dc38babfb8305154676] Merge branch 'topic/asoc' into for-linus
git bisect good 13b137ef0367237909bb2dc38babfb8305154676
# bad: [bac4b92cf7a444c0af8dd7b269c8791595c44052] ALSA: hda - Don't add aa-mix for VIA surrounds
git bisect bad bac4b92cf7a444c0af8dd7b269c8791595c44052
# bad: [216c7a0f22a088ff9f7c14f82c5bf93294875df9] Merge branch 'fix/hda' into topic/via-cleanup
git bisect bad 216c7a0f22a088ff9f7c14f82c5bf93294875df9
# bad: [64be285b669e5eed65fb3630f1b2b549447b9f1e] ALSA: hda - Auto-mute all LO and speakers in patch_via.c
git bisect bad 64be285b669e5eed65fb3630f1b2b549447b9f1e
# bad: [8b0bd2266f9f8f7e7f192f2a5be164d7f637ce45] ALSA: hda - Fix SSYNC register value for non-Intel controllers
git bisect bad 8b0bd2266f9f8f7e7f192f2a5be164d7f637ce45
# good: [2def8172c6611f2577260287ebf5dd3b63f7ef55] ALSA: hda: hdmi_eld_update_pcm_info: update a stream in place
git bisect good 2def8172c6611f2577260287ebf5dd3b63f7ef55
# bad: [a810364a0424c297242c6c66071a42f7675a5568] ALSA: hda - Handle -1 as invalid position, too
git bisect bad a810364a0424c297242c6c66071a42f7675a5568
# bad: [384a48d71520ca569a63f1e61e51a538bedb16df] ALSA: hda: HDMI: Support codecs with fewer cvts than pins
git bisect bad 384a48d71520ca569a63f1e61e51a538bedb16df