On Monday, 11 June 2007 22:10, Alan Stern wrote: > On Mon, 11 Jun 2007, Rafael J. Wysocki wrote: > > > > At that point, does "lspci -vv" show that the controller is trying to > > > signal a wakeup event? That is, is the PME# signal asserted? > > > > > > (Not that knowing this will help very much -- I'm not sure what we > > > could do with that information, and in any case there are other ways > > > besides PME# for on-board devices to report wakeup requests. I ask > > > mainly out of curiousity.) > > > > It shows this literally: > > > > 00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 02) (prog-if 20 [EHCI]) > > Subsystem: ASUSTeK Computer Inc. Unknown device 8089 > > Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- > > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- > > Interrupt: pin D routed to IRQ 20 > > Region 0: Memory at febffc00 (32-bit, non-prefetchable) [size=1K] > > Capabilities: [50] Power Management version 2 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA PME(D0+,D1-,D2-,D3hot+,D3cold+) > > Status: D3 PME-Enable+ DSel=0 DScale=0 PME- > > Capabilities: [58] Debug port > > Which means that the controller is in D3 and it supports PME#, but PME# > isn't turned on. But as I said, Intel controllers may signal wakeup > requests in a different way (UHCI controllers definitely do, but maybe > not EHCI). > > > > The simplest workaround should be to disable remote wakeup for that > > > controller: > > > > > > echo disable >/sys/bus/pci/devices/.../power/wakeup > > > > I tried that but it didn't help. Namely, the box resumed right after > > suspending as it had done before. > > > > The only way to prevent it from resuming immediately after the suspend is to > > 'rmmod ehci_hcd' before the suspend. > > Hmmm... If you turn on CONFIG_USB_DEBUG, what shows up in > /sys/class/usb_host/usb_hostN/registers where N is the bus number of > the controller? bus pci, device 0000:00:1d.7 (driver 10 Dec 2004) EHCI Host Controller EHCI 1.00, hcd state 4 ownership 00000001 SMI sts/enable 0x80080000 structural params 0x00103206 capability params 0x00006871 status 1008 Halt FLR command 010000 (park)=0 ithresh=1 period=1024 HALT intrenable 37 IAA FATAL PCD ERR INT uframe 36f1 port 1 status 701000 POWER sig=se0 port 2 status 701000 POWER sig=se0 port 3 status 701000 POWER sig=se0 port 4 status 701000 POWER sig=se0 port 5 status 701000 POWER sig=se0 port 6 status 701000 POWER sig=se0 irq normal 0 err 0 reclaim 0 (lost 0) complete 0 unlink 0 > Also, can you post a dmesg log (with CONFIG_USB_DEBUG enabled) showing > what happens during the suspend and immediate resume? [That's after I have disabled the wakeup on the EHCI controller.] PM: Preparing system for mem sleep Stopping tasks ... done. Suspending console(s) pnp: Device 00:07 disabled. pnp: Device 00:05 disabled. ehci_hcd 0000:00:1d.7: --> PCI D3 uhci_hcd 0000:00:1d.2: uhci_suspend uhci_hcd 0000:00:1d.2: --> PCI D0/legacy uhci_hcd 0000:00:1d.1: uhci_suspend uhci_hcd 0000:00:1d.1: --> PCI D0/legacy uhci_hcd 0000:00:1d.0: uhci_suspend uhci_hcd 0000:00:1d.0: --> PCI D0/legacy PM: Entering mem sleep Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU0: Intel P4/Xeon Extended MCE MSRs (12) available CPU0: Thermal monitoring enabled Back to C! PM: Finishing wakeup. uhci_hcd 0000:00:1d.0: PCI legacy resume ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 18 PCI: Setting latency timer of device 0000:00:1d.0 to 64 uhci_hcd 0000:00:1d.0: uhci_resume uhci_hcd 0000:00:1d.0: uhci_check_and_reset_hc: legsup = 0x2f00 uhci_hcd 0000:00:1d.0: Performing full reset usb usb2: root hub lost power or was reset usb usb2: suspend_rh uhci_hcd 0000:00:1d.1: PCI legacy resume ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 19 PCI: Setting latency timer of device 0000:00:1d.1 to 64 uhci_hcd 0000:00:1d.1: uhci_resume uhci_hcd 0000:00:1d.1: uhci_check_and_reset_hc: legsup = 0x2000 uhci_hcd 0000:00:1d.1: Performing full reset usb usb3: root hub lost power or was reset usb usb3: suspend_rh uhci_hcd 0000:00:1d.2: PCI legacy resume ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 16 PCI: Setting latency timer of device 0000:00:1d.2 to 64 uhci_hcd 0000:00:1d.2: uhci_resume uhci_hcd 0000:00:1d.2: uhci_check_and_reset_hc: legsup = 0x2000 uhci_hcd 0000:00:1d.2: Performing full reset usb usb4: root hub lost power or was reset usb usb4: suspend_rh ehci_hcd 0000:00:1d.7: PCI D0, from previous PCI D3 ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 17 PCI: Setting latency timer of device 0000:00:1d.7 to 64 PM: Writing back config space on device 0000:00:1e.0 at offset 7 (was 2280d0d0, writing 280d0d0) PCI: Setting latency timer of device 0000:00:1e.0 to 64 PM: Writing back config space on device 0000:00:1f.1 at offset 9 (was 0, writing 30000000) PM: Writing back config space on device 0000:00:1f.1 at offset 1 (was 2800005, writing 2800007) ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 16 PM: Writing back config space on device 0000:00:1f.5 at offset 1 (was 2900007, writing 2900003) ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 21 PCI: Setting latency timer of device 0000:00:1f.5 to 64 eth0: link down pnp: Device 00:05 activated. pnp: Device 00:07 activated. pnp: Failed to activate device 00:0b. pnp: Failed to activate device 00:0c. eth0: link up, 100Mbps, full-duplex, lpa 0x45E1 hda: selected mode 0x42 hdb: selected mode 0x42 hdc: selected mode 0x42 usb usb1: usb resume usb usb1: finish resume hub 1-0:1.0: hub_resume ehci_hcd 0000:00:1d.7: resume root hub usb usb2: usb resume usb usb2: finish resume hub 2-0:1.0: hub_resume usb usb2: wakeup_rh usb usb3: usb resume usb usb3: finish resume hub 3-0:1.0: hub_resume usb usb3: wakeup_rh usb usb4: usb resume usb usb4: finish resume hub 4-0:1.0: hub_resume usb usb4: wakeup_rh Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0000 ehci_hcd 0000:00:1d.7: GetStatus port 3 status 001020 POWER sig=se0 OCC hub 1-0:1.0: over-current change on port 3 hub 1-0:1.0: trying to enable port power on non-switchable hub done. ehci_hcd 0000:00:1d.7: GetStatus port 4 status 001020 POWER sig=se0 OCC hub 1-0:1.0: over-current change on port 4 hub 1-0:1.0: trying to enable port power on non-switchable hub ehci_hcd 0000:00:1d.7: GetStatus port 5 status 001020 POWER sig=se0 OCC hub 1-0:1.0: over-current change on port 5 hub 1-0:1.0: trying to enable port power on non-switchable hub ehci_hcd 0000:00:1d.7: GetStatus port 6 status 001020 POWER sig=se0 OCC hub 1-0:1.0: over-current change on port 6 hub 1-0:1.0: trying to enable port power on non-switchable hub hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0000 hub 3-0:1.0: state 7 ports 2 chg 0000 evt 0000 hub 4-0:1.0: state 7 ports 2 chg 0000 evt 0000 usb usb2: suspend_rh (auto-stop) usb usb3: suspend_rh (auto-stop) usb usb4: suspend_rh (auto-stop) hub 1-0:1.0: hub_suspend ehci_hcd 0000:00:1d.7: suspend root hub usb usb1: usb auto-suspend hub 2-0:1.0: hub_suspend usb usb2: suspend_rh usb usb2: usb auto-suspend hub 3-0:1.0: hub_suspend usb usb3: suspend_rh usb usb3: usb auto-suspend hub 4-0:1.0: hub_suspend usb usb4: suspend_rh usb usb4: usb auto-suspend _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
