On Fri, 25 Dec 2009 12:18:57 +0100 Takashi Iwai wrote: > At Fri, 25 Dec 2009 12:21:07 +0200, > Sergei Trofimovich wrote: > > > > $SUBJ > > > > $ git describe > > v2.6.33-rc2 > > > > No matter if I actually play any sounds that process consumes 23-24% CPU > > Don't know if it's related to above: even if there is no any sound activity > > I can hear crackling in headphones. > > > > $ lspci -vvv > > > > 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03) > > Subsystem: Hewlett-Packard Company Device 30c9 > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ > > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- > Latency: 0, Cache Line Size: 64 bytes > > Interrupt: pin A routed to IRQ 27 > > Region 0: Memory at e0644000 (64-bit, non-prefetchable) [size=16K] > > Capabilities: [50] Power Management version 2 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+,D1-,D2-,D3hot+,D3cold+) > > Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- > > Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ > > Address: 00000000fee0300c Data: 4191 > > Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00 > > DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited > > ExtTag- RBE- FLReset- > > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- > > RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+ > > MaxPayload 128 bytes, MaxReadReq 128 bytes > > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend- > > LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us > > ClockPM- Surprise- LLActRep- BwNot- > > LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk- > > ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- > > LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt- > > Capabilities: [100] Virtual Channel > > Capabilities: [130] Root Complex Link > > Kernel driver in use: HDA Intel > > Kernel modules: snd-hda-intel > > > > $ powertop > > > > Cn Avg residency P-states (frequencies) > > C0 (cpu running) (25.1%) 1200 Mhz 4.7% > > C1 0.0ms ( 0.0%) 1067 Mhz 0.2% > > C2 0.3ms (74.9%) 933 Mhz 0.2% > > 800 Mhz 94.9% > > > > > > Wakeups-from-idle per second : 2931.9 interval: 10.0s > > no ACPI power usage estimate available > > > > Top causes for wakeups: > > 80.6% (6766.8) : HDA Intel > > 10.5% (885.6) : Rescheduling interrupts > > 6.4% (541.3) : hrtimer_start_range_ns (tick_sched_timer) > This has been already reported by some people, but unfortunately I > couldn't reproduce this on my test machines. > > Eric figured out that replacing the whole sound/pci/hda/* files with > 2.6.31 works, so this must be a regression in that area. > Could someone bisect it? The commits to check are restricted only in > sound/pci/hda, so there shouldn't be many changes. > > % git bisect start -- sound/pci/hda > % git bisect bad > % git bisect good v2.6.32 > > > thanks, Done: d56757abc11a21996d9839c0d4e3b2c3666cd318 is the first bad commit commit d56757abc11a21996d9839c0d4e3b2c3666cd318 Author: Takashi Iwai Date: Wed Nov 18 08:00:14 2009 +0100 ALSA: hda - Replace the rest of jack-detections with snd_hda_jack_detect() Signed-off-by: Takashi Iwai :040000 040000 46040881f7bc4b662a784ac66a6482c2a5b3dca5 6a76aa47a3d0cccad0c8a3ae62cb63ecbdd9b44d M sound Bisect log: git bisect start '--' 'sound/pci/hda' # bad: [55639353a0035052d9ea6cfe4dde0ac7fcbb2c9f] Linux 2.6.33-rc1 git bisect bad 55639353a0035052d9ea6cfe4dde0ac7fcbb2c9f # good: [22763c5cf3690a681551162c15d34d935308c8d7] Linux 2.6.32 git bisect good 22763c5cf3690a681551162c15d34d935308c8d7 # good: [123c07aeddd71fbb295842a8c19866e780b9a100] ALSA: hda_intel: Digital PC Beep - change behaviour for input layer git bisect good 123c07aeddd71fbb295842a8c19866e780b9a100 # good: [123c07aeddd71fbb295842a8c19866e780b9a100] ALSA: hda_intel: Digital PC Beep - change behaviour for input layer git bisect good 123c07aeddd71fbb295842a8c19866e780b9a100 # bad: [0b587fc4d35afb1bc0fc3d890084bb14c78372dc] ALSA: hda: Fix max PCM level to 0 dB for Fujitsu-Siemens laptops using CX2054 9 (Venice) git bisect bad 0b587fc4d35afb1bc0fc3d890084bb14c78372dc # good: [23ccc2bd246a5bdb1ac03dc9040a0585c1890ef3] ALSA: intelhdmi - export monitor-presence and ELD-valid status git bisect good 23ccc2bd246a5bdb1ac03dc9040a0585c1890ef3 # bad: [d56757abc11a21996d9839c0d4e3b2c3666cd318] ALSA: hda - Replace the rest of jack-detections with snd_hda_jack_detect() git bisect bad d56757abc11a21996d9839c0d4e3b2c3666cd318 # good: [848de598eef9603d6f2c174f90fded4e63ac5e23] ALSA: intelhdmi - sticky infoframe git bisect good 848de598eef9603d6f2c174f90fded4e63ac5e23 # good: [81bf31e2d0a6a9f5d83da0a757f8ca03db908162] ALSA: intelhdmi - sticky channel count git bisect good 81bf31e2d0a6a9f5d83da0a757f8ca03db908162 # good: [83d605fd63e704419ccb92d48b735c6890ce3d6a] ALSA: hda - show EPSS capability in proc git bisect good 83d605fd63e704419ccb92d48b735c6890ce3d6a Sorry, was unable to revert that commit on top of current 2.6.33-rc2 and verify it's guilty. > Takashi -- Sergei