I am running into the same problem. I have a Microsoft/2000 web cam, USB ID 045e:0761. I am running Ubuntu 12.04 LTS with the 3.2.0-30-generic #48-Ubuntu SMP kernel. May I help with this problem?
jeffs@jeffs-desktop:~$ dmesg | grep ehci [ 1.411372] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.411385] ehci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 1.411398] ehci_hcd 0000:00:1a.0: setting latency timer to 64 [ 1.411401] ehci_hcd 0000:00:1a.0: EHCI Host Controller [ 1.411432] ehci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 1 [ 1.411456] ehci_hcd 0000:00:1a.0: debug port 2 [ 1.415332] ehci_hcd 0000:00:1a.0: cache line size of 64 is not supported [ 1.415342] ehci_hcd 0000:00:1a.0: irq 16, io mem 0xf7138000 [ 1.430463] ehci_hcd 0000:00:1a.0: USB 2.0 started, EHCI 1.00 [ 1.430597] ehci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23 [ 1.430609] ehci_hcd 0000:00:1d.0: setting latency timer to 64 [ 1.430612] ehci_hcd 0000:00:1d.0: EHCI Host Controller [ 1.430640] ehci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 [ 1.430660] ehci_hcd 0000:00:1d.0: debug port 2 [ 1.434549] ehci_hcd 0000:00:1d.0: cache line size of 64 is not supported [ 1.434557] ehci_hcd 0000:00:1d.0: irq 23, io mem 0xf7137000 [ 1.450449] ehci_hcd 0000:00:1d.0: USB 2.0 started, EHCI 1.00 [ 1.742293] usb 1-1: new high-speed USB device number 2 using ehci_hcd [ 1.986153] usb 2-1: new high-speed USB device number 2 using ehci_hcd [ 2.190082] usb 1-1.2: new low-speed USB device number 3 using ehci_hcd [ 2.358151] usb 1-1.4: new full-speed USB device number 4 using ehci_hcd [ 2.522050] usb 2-1.6: new full-speed USB device number 3 using ehci_hcd [ 2.721932] usb 1-1.4.3: new full-speed USB device number 5 using ehci_hcd [ 510.603551] usb 1-1.4.1: new full-speed USB device number 6 using ehci_hcd [ 510.819417] usb 1-1.4.1: new full-speed USB device number 7 using ehci_hcd [ 1674.568827] ehci_hcd 0000:00:1d.0: PCI INT A disabled [ 1674.588826] ehci_hcd 0000:00:1a.0: PCI INT A disabled [ 1675.608476] ehci_hcd 0000:00:1d.0: PME# enabled [ 1675.608502] ehci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI [ 1675.624266] ehci_hcd 0000:00:1a.0: PME# enabled [ 1675.624280] ehci_hcd 0000:00:1a.0: wake-up capability enabled by ACPI [ 1676.631091] ehci_hcd 0000:00:1a.0: restoring config space at offset 0xf (was 0x100, writing 0x10b) [ 1676.631104] ehci_hcd 0000:00:1a.0: restoring config space at offset 0x4 (was 0x0, writing 0xf7138000) [ 1676.631110] ehci_hcd 0000:00:1a.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002) [ 1676.631130] ehci_hcd 0000:00:1a.0: wake-up capability disabled by ACPI [ 1676.631133] ehci_hcd 0000:00:1a.0: PME# disabled [ 1676.631181] ehci_hcd 0000:00:1d.0: restoring config space at offset 0xf (was 0x100, writing 0x103) [ 1676.631195] ehci_hcd 0000:00:1d.0: restoring config space at offset 0x4 (was 0x0, writing 0xf7137000) [ 1676.631200] ehci_hcd 0000:00:1d.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002) [ 1676.631219] ehci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI [ 1676.631223] ehci_hcd 0000:00:1d.0: PME# disabled [ 1676.631564] ehci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 1676.631578] ehci_hcd 0000:00:1a.0: setting latency timer to 64 [ 1676.631582] ehci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23 [ 1676.631605] ehci_hcd 0000:00:1d.0: setting latency timer to 64 jeffs@jeffs-desktop:~$ I have an older USB card hanging around, which I could install and test with - would that be useful at this point in your process? Jeff SIlverman -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1014749 Title: can't read uvcvideo (usb video / webcams) devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1014749/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
