Hide Forgot
Description of problem: powertop reports that nVidia CK804 usb wakes up 47/second on an "idle" Gnome Desktop. Nothing is plugged in to any USB port. Both keyboard and mouse are PS/2; reboot, disconnect PS/2 cables, replace with USB keyboard and USB mouse has no effect. Ethernet is using a PCI card with e100 driver (not the builtin CK804 connection); forcedeth has been rmmod. Version-Release number of selected component (if applicable): kernel-2.6.23-0.104.rc3.fc8 How reproducible: always Steps to Reproduce: 1. powertop; kill sealert; set AC97 powersave; filesystems mounted 'noatime' 2. 3. Actual results: PowerTOP 1.7 (C) 2007 Intel Corporation Collecting data for 5 seconds < Detailed C-state information is only available on Mobile CPUs (laptops) > P-states (frequencies) Wakeups-from-idle per second : 119.0 no ACPI power usage estimate available Top causes for wakeups: 51.8% ( 46.8) <interrupt> : ohci_hcd:usb1, NVidia CK804 15.0% ( 13.6) at-spi-registry : schedule_timeout (process_timeout) 13.7% ( 12.4) X : do_setitimer (it_real_fn) 3.1% ( 2.8) gnome-terminal : schedule_timeout (process_timeout) 2.2% ( 2.0) <kernel core> : clocksource_register (clocksource_watchdog) 2.0% ( 1.8) <interrupt> : libata 1.8% ( 1.6) setroubleshootd : schedule_timeout (process_timeout) 1.1% ( 1.0) dhcdbd : schedule_timeout (process_timeout) 1.1% ( 1.0) <kernel core> : queue_delayed_work_on (delayed_work_timer_fn) Expected results: No interrupts when no relevant devices are active. Additional info: # cat /proc/interrupts CPU0 0: 1045 IO-APIC-edge timer 1: 2159 IO-APIC-edge i8042 6: 2 IO-APIC-edge floppy 7: 1 IO-APIC-edge parport0 8: 0 IO-APIC-edge rtc0 9: 0 IO-APIC-fasteoi acpi 12: 19786 IO-APIC-edge i8042 14: 15152 IO-APIC-edge libata 15: 102 IO-APIC-edge libata 16: 29061 IO-APIC-fasteoi ohci_hcd:usb1, NVidia CK804 17: 0 IO-APIC-fasteoi ehci_hcd:usb2 18: 507 IO-APIC-fasteoi sata_nv 21: 19 IO-APIC-fasteoi firewire_ohci 22: 7301 IO-APIC-fasteoi eth2 NMI: 0 LOC: 119569 ERR: 1 MIS: 0 # /sbin/lspci 00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3) 00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3) 00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2) 00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2) 00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3) 00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2) 00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2) 00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) 00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2) 00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3) 00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:07.0 Ethernet controller: Linksys Gigabit Network Adapter (rev 10) 01:08.0 Ethernet controller: Intel Corporation 82559 InBusiness 10/100 (rev 08) 01:09.0 Ethernet controller: ADMtek NC100 Network Everywhere Fast Ethernet 10/100 (rev 11) 01:0c.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 80) 05:00.0 VGA compatible controller: nVidia Corporation NV44 [GeForce 6200 LE] (rev a1) # /sbin/lspci -n 00:00.0 0580: 10de:005e (rev a3) 00:01.0 0601: 10de:0050 (rev a3) 00:01.1 0c05: 10de:0052 (rev a2) 00:02.0 0c03: 10de:005a (rev a2) 00:02.1 0c03: 10de:005b (rev a3) 00:04.0 0401: 10de:0059 (rev a2) 00:06.0 0101: 10de:0053 (rev f2) 00:07.0 0101: 10de:0054 (rev f3) 00:09.0 0604: 10de:005c (rev a2) 00:0a.0 0680: 10de:0057 (rev a3) 00:0b.0 0604: 10de:005d (rev a3) 00:0c.0 0604: 10de:005d (rev a3) 00:0d.0 0604: 10de:005d (rev a3) 00:0e.0 0604: 10de:005d (rev a3) 00:18.0 0600: 1022:1100 00:18.1 0600: 1022:1101 00:18.2 0600: 1022:1102 00:18.3 0600: 1022:1103 01:07.0 0200: 1737:1032 (rev 10) 01:08.0 0200: 8086:1030 (rev 08) 01:09.0 0200: 1317:0985 (rev 11) 01:0c.0 0c00: 1106:3044 (rev 80) 05:00.0 0300: 10de:0163 (rev a1) # -----
these 47 could well be ALSA sound.. do you have some sound thingy active? (even if you're not playing sound)
It seems to be "/usr/bin/esd -nobeeps" because killing it silences all "CK804" interrupts. The parent process is /usr/bin/gnome-session. The sound-related kernel modules that are loaded are: ----- /sbin/lsmod | grep snd snd_intel8x0 30821 3 snd_ac97_codec 93821 1 snd_intel8x0 ac97_bus 6337 1 snd_ac97_codec snd_seq_dummy 6725 0 snd_seq_oss 30673 0 snd_seq_midi_event 9929 1 snd_seq_oss snd_seq 46361 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_seq_device 10325 3 snd_seq_dummy,snd_seq_oss,snd_seq snd_pcm_oss 38625 0 snd_mixer_oss 16969 1 snd_pcm_oss snd_pcm 65389 4 snd_intel8x0,snd_ac97_codec,snd_pcm_oss snd_timer 20957 3 snd_seq,snd_pcm snd 45189 13 snd_intel8x0,snd_ac97_codec,snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer soundcore 9761 1 snd snd_page_alloc 11209 2 snd_intel8x0,snd_pcm ----- AC97 power-saving mode was invoked.
ac97 power saving doesn't actually kick in until userspace stops using the sound device....... and it seems esd is doing exactly that. It should close the sound device if it's not using it.
(In reply to comment #3) > ac97 power saving doesn't actually kick in until userspace stops using the sound > device....... and it seems esd is doing exactly that. It should close the sound > device if it's not using it. No. ALSA shouldn't be generating interrupts when nothing is writing to the device. *** This bug has been marked as a duplicate of 253445 ***