On 1/9/07, Alan Stern <[EMAIL PROTECTED]> wrote: > On Tue, 9 Jan 2007, Jon Smirl wrote: > > > Is there some tool or sys variable that can toggle power to the > > device? That will let me see if it is in sleep mode when it shouldn't > > be. > > If you turn on CONFIG_PM_SYSFS_DEPRECATED then you can suspend your device > by doing: > > echo -n 2 >/sys/bus/usb/devices/.../power/state > > and resume it by writing a '0' instead of a '2'. The value in that file > will tell you the device's current state.
When I booted and the device was in a non-working state, state was 0. So the driver thinks it is active when the device isn't. I tried writing 0 & 2 to state multiple times but I can't get the device to power on. This message was interesting: snd-usb-audio 2-1:1.0: no resume for driver snd-usb-audio? [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1# ls 2-1:1.0 bDeviceClass bNumConfigurations ep_00 maxchild usb_device:usbdev2.2 2-1:1.1 bDeviceProtocol bNumInterfaces idProduct power usb_endpoint:usbdev2.2_ep00 2-1:1.2 bDeviceSubClass bus idVendor product version 2-1:1.3 bmAttributes configuration input:event1 speed bcdDevice bMaxPacketSize0 devnum input:input1 subsystem bConfigurationValue bMaxPower driver manufacturer uevent [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1# cd power [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# ls state wakeup [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# cat state 0 [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# echo -n 2 >state [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# echo -n 0 >state [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# tail -n 40 /var/log/syslog Jan 9 12:09:02 jonsmirl kernel: usb 2-1: usb suspend Jan 9 12:09:04 jonsmirl kernel: hub 2-0:1.0: hub_suspend Jan 9 12:09:04 jonsmirl kernel: usb usb2: suspend_rh Jan 9 12:09:04 jonsmirl kernel: usb usb2: usb auto-suspend Jan 9 12:09:09 jonsmirl kernel: usb 2-1: PM: resume from 2, parent usb2 still 2 Jan 9 12:09:09 jonsmirl kernel: usb usb2: usb auto-resume Jan 9 12:09:09 jonsmirl kernel: usb usb2: finish resume Jan 9 12:09:09 jonsmirl kernel: hub 2-0:1.0: hub_resume Jan 9 12:09:09 jonsmirl kernel: usb usb2: wakeup_rh Jan 9 12:09:09 jonsmirl kernel: hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0000 Jan 9 12:09:09 jonsmirl kernel: usb 2-1: usb resume Jan 9 12:09:09 jonsmirl kernel: uhci_hcd 0000:00:1d.1: port 1 portsc 00a5,01 Jan 9 12:09:09 jonsmirl kernel: usb 2-1: finish resume Jan 9 12:09:09 jonsmirl kernel: snd-usb-audio 2-1:1.0: no resume for driver snd-usb-audio? Jan 9 12:09:09 jonsmirl kernel: snd-usb-audio 2-1:1.1: no resume for driver snd-usb-audio? Jan 9 12:09:09 jonsmirl kernel: snd-usb-audio 2-1:1.2: no resume for driver snd-usb-audio? Jan 9 12:09:09 jonsmirl kernel: usbhid 2-1:1.3: resume status 0 Jan 9 12:09:26 jonsmirl kernel: usb usb5: usb auto-resume Jan 9 12:09:26 jonsmirl kernel: usb usb5: finish resume Jan 9 12:09:26 jonsmirl kernel: hub 5-0:1.0: hub_resume Jan 9 12:09:26 jonsmirl kernel: ehci_hcd 0000:00:1d.7: resume root hub Jan 9 12:09:26 jonsmirl kernel: hub 5-0:1.0: state 7 ports 8 chg 0000 evt 0000 Jan 9 12:09:26 jonsmirl kernel: usb 5-1: usb auto-resume Jan 9 12:09:26 jonsmirl kernel: ehci_hcd 0000:00:1d.7: GetStatus port 1 status 001005 POWER sig=se0 PE CONNECT Jan 9 12:09:26 jonsmirl kernel: usb 5-1: finish resume Jan 9 12:09:26 jonsmirl kernel: hub 5-1:1.0: hub_resume Jan 9 12:09:26 jonsmirl kernel: ehci_hcd 0000:00:1d.7: reused qh f7806100 schedule Jan 9 12:09:26 jonsmirl kernel: usb 5-1: link qh256-0001/f7806100 start 255 [1/0 us] Jan 9 12:09:26 jonsmirl kernel: hub 5-1:1.0: state 7 ports 7 chg 0000 evt 0000 Jan 9 12:09:26 jonsmirl kernel: usb usb4: usb auto-resume Jan 9 12:09:26 jonsmirl kernel: usb usb4: finish resume Jan 9 12:09:26 jonsmirl kernel: hub 4-0:1.0: hub_resume Jan 9 12:09:26 jonsmirl kernel: usb usb4: wakeup_rh Jan 9 12:09:26 jonsmirl kernel: hub 4-0:1.0: state 7 ports 2 chg 0000 evt 0000 Jan 9 12:09:26 jonsmirl kernel: usb 2-2: usb auto-resume Jan 9 12:09:26 jonsmirl kernel: uhci_hcd 0000:00:1d.1: port 2 portsc 00a5,01 Jan 9 12:09:26 jonsmirl kernel: usb 2-2: finish resume Jan 9 12:09:26 jonsmirl kernel: hub 2-2:1.0: hub_resume Jan 9 12:09:26 jonsmirl kernel: hub 2-2:1.0: state 7 ports 4 chg 0000 evt 0000 Jan 9 12:09:27 jonsmirl kernel: usb usb4: suspend_rh (auto-stop) [EMAIL PROTECTED]:/sys/bus/usb/devices/2-1/power# -- Jon Smirl [EMAIL PROTECTED] ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
