apport information ** Tags added: apport-collected natty running-unity
** Description changed: When using libusb-0.1 to poll an interrupt endpoint I discovered that after 64 timeouts that I could no-longer request any further data. Relevant syslog: -- Jul 21 17:11:31 kgw2 kernel: [ 1261.579022] xhci_hcd 0000:01:00.0: ERROR no room on ep ring Jul 21 17:11:31 kgw2 kernel: [ 1261.579025] usb 9-3: usbfs: usb_submit_urb returned -12 -- After looking through the libusb code and finding no possible explanation I then moved my device to a USB 2.0 port on the PC and the problem disappeared. I'm experiencing this problem on Ubuntu 11.04 (kernel "Ubuntu 2.6.38-10.46-generic 2.6.38.7") and I can dig into this a lot more if necessary. + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. + Architecture: amd64 + ArecordDevices: + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC892 Analog [ALC892 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: microscopy 1508 F.... pulseaudio + CRDA: Error: [Errno 2] No such file or directory + Card0.Amixer.info: + Card hw:0 'Intel'/'HDA Intel at 0xf2000000 irq 61' + Mixer name : 'Realtek ALC892' + Components : 'HDA:10ec0892,80860042,00100302' + Controls : 20 + Simple ctrls : 12 + Card1.Amixer.info: + Card hw:1 'NVidia'/'HDA NVidia at 0xd1000000 irq 17' + Mixer name : 'Nvidia GPU 18 HDMI/DP' + Components : 'HDA:10de0018,10de0101,00100100' + Controls : 16 + Simple ctrls : 4 + DistroRelease: Ubuntu 11.04 + HibernationDevice: RESUME=UUID=5686fffa-78af-496d-bda7-f158800070e7 + InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) + IwConfig: + lo no wireless extensions. + + eth0 no wireless extensions. + MachineType: System76, Inc. Leopard Extreme + NonfreeKernelModules: nvidia + Package: linux (not installed) + ProcEnviron: + SHELL=/bin/bash + LANG=en_US.UTF-8 + LANGUAGE=en_US:en + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-10-generic root=UUID=355c2248-a24b-4840-8000-e563ad9d0727 ro quiet splash vt.handoff=7 + ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7 + RelatedPackageVersions: + linux-restricted-modules-2.6.38-10-generic N/A + linux-backports-modules-2.6.38-10-generic N/A + linux-firmware 1.52 + RfKill: + + Tags: natty running-unity + Uname: Linux 2.6.38-10-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm admin cdrom dialout lpadmin mlocate plugdev sambashare + WifiSyslog: + + dmi.bios.date: 02/28/2011 + dmi.bios.vendor: Intel Corp. + dmi.bios.version: SOX5820J.86A.0765.2011.0228.1549 + dmi.board.asset.tag: Base Board Asset Tag + dmi.board.name: DX58OG + dmi.board.vendor: Intel Corporation + dmi.board.version: AAG10926-204 + dmi.chassis.type: 3 + dmi.chassis.vendor: System76, Inc. + dmi.chassis.version: leox2 + dmi.modalias: dmi:bvnIntelCorp.:bvrSOX5820J.86A.0765.2011.0228.1549:bd02/28/2011:svnSystem76,Inc.:pnLeopardExtreme:pvrleox2:rvnIntelCorporation:rnDX58OG:rvrAAG10926-204:cvnSystem76,Inc.:ct3:cvrleox2: + dmi.product.name: Leopard Extreme + dmi.product.version: leox2 + dmi.sys.vendor: System76, Inc. ** Attachment added: "AcpiTables.txt" https://bugs.launchpad.net/bugs/814682/+attachment/2225953/+files/AcpiTables.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/814682 Title: USB 3.0 (xhci_hcd) fails to discard URBs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/814682/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
