Public bug reported: My laptop has one USB 2.0 port and a couple of USB 3.0 ports. I don't think the USB 3.0 ports have ever worked. There are a couple of different USB controllers listed in lspci:
$ sudo lspci -nn | grep USB 00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04) 03:00.0 USB controller [0c03]: Renesas Technology Corp. Device [1912:0015] (rev 02) lsusb lists a 3.0 root hub along wit the 2.0 one. $ sudo lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:07da Intel Corp. Bus 001 Device 004: ID 2232:1024 I see the following errors in dmesg output (and nothing when I plug/unplug a device): $ dmesg | grep xhci [ 3916.808221] xhci_hcd 0000:03:00.0: WARN: xHC restore state timeout [ 3916.808236] xhci_hcd 0000:03:00.0: PCI post-resume error -110! [ 3916.808237] xhci_hcd 0000:03:00.0: HC died; cleaning up [ 3916.808240] xhci_hcd 0000:03:00.0: HC died; cleaning up ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-21-generic 3.5.0-21.32 ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1 Uname: Linux 3.5.0-21-generic x86_64 ApportVersion: 2.6.1-0ubuntu9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: shaun 1915 F.... pulseaudio Date: Sat Dec 29 11:54:48 2012 HibernationDevice: RESUME=UUID=e9e7a3d6-2d7f-4d2d-8880-ace10b4a942f InstallationDate: Installed on 2012-09-26 (94 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120905.2) MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-21-generic root=/dev/mapper/ubuntu-root ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/shaun not ours. No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.5.0-21-generic N/A linux-backports-modules-3.5.0-21-generic N/A linux-firmware 1.95 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/12/2012 dmi.bios.vendor: Phoenix Technologies Ltd. dmi.bios.version: P03AAC dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: SAMSUNG_NP1234567890 dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.board.version: FAB1 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP03AAC:bd07/12/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3C/900X3D/900X4C/900X4D:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: dmi.product.name: 900X3C/900X3D/900X4C/900X4D dmi.product.version: 0.1 dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: amd64 apport-bug quantal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1094534 Title: USB 3.0 ports don't work, xhci_hcd errors in kernal log To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1094534/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs