Description of problem: If I suspend to disk and resume, I get the following dmesg entries: hub 1-0:1.0: port 1 status 0000.0100 after resume, -19 usb 1-1: can't resume, status -19 hub 1-0:1.0: logical disconnect on port 1 pm_op(): usb_dev_restore+0x0/0x10 returns -19 PM: Device 1-1 failed to restore: error -19 ehci_hcd 0000:00:1a.7: devpath 6 ep0out 3strikes uvcvideo: Failed to query (1) UVC control 2 (unit 0) : -71 (exp. 26). uvcvideo 1-6:1.1: resume error -5 PM: Image restored successfully. Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 6 chg 0002 evt 0002 hub 1-0:1.0: port 1, status 0100, change 0000, 12 Mb/s usb 1-1: USB disconnect, address 4 usb 1-1: unregistering device usb 1-1: usb_disable_device nuking all URBs usb 1-1: unregistering interface 1-1:1.0 usb 1-1:1.0: uevent usb 1-1: uevent Version-Release number of selected component (if applicable): kernel-2.6.27-0.329.rc6.git2.fc10.x86_64 How reproducible: 100% Steps to Reproduce: 1. Suspend to disk. 2. Resume. 3. No camera device. Doing an rmmod/modprobe cycle doesn't seem to help.
As much as it is tempting to blame the uvcvideo, looks like the core failed to resume the port and driver has done what it could to re-awaken the device. Bryan, does the camera work afterwards, or it requires physical unplug-replug to work?
Hi, Pete - The camera doesn't work afterwards. It's built into the laptop's lid, so I can't do an unplug/replug on it.
A built-in, so I cannot buy it? Just my luck. Bryan, please do this for me: capture two usbmon traces, one where it's enumerated normally, and the one across the suspend/resume. There's a howto in /usr/share/doc/kernel-doc-2.6.27/Documentation/usb/usbmon.txt. For the first run, find out what bus the cam is on (e.g. ehci or or uhci/ohci) by looking at /proc/bus/usb/devices (come to think of it, attach it to the bug for the reference, please). I expect it to be ehci. If so, run rmmod uhci_hcd; rmmod ohci_hcd -- this will prevent both hw and sw fallback from confusing us. Then, start cat /sys/kernel/debug/usbmon/0u > xxx1. Run rmmod ehci_hcd && modprobe ehci_hcd. Wait for the camera to come up (it does, right?), kill the cat. Save the trace. If it does not come up, we have our case and suspend/resume was a red herring. Do not proceed. For the second run, start cat as before, only >xxx2. Suspend, resume, kill the cat, save the trace. Verify that the camera is dead. Also, please save the complete dmesg without edits. I'll read the traces and try to find what we do differently for the resume.
Bryan, please let me know if this kind of debugging is too onerous for you. I may be able to cobble together a test platform by buying a uvc-compatible webcam. Keep in mind though, such things commonly fail to reproduce with a slightest deviation.
It should be doable, but I just had a hand operation today so it will be a few days before I can do anything.
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle. Changing version to '10'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
This message is a reminder that Fedora 10 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 10. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '10'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 10's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 10 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.