Description of problem: USB devices conflict. When a USB device plugged in, some previously connected USB device stops functioning (usually WiFi adapter) Version-Release number of selected component (if applicable): How reproducible: Plug in USB camera. Observe network disconnected Steps to Reproduce: 1. [iorsh@localhost ~]$ lsusb Bus 001 Device 003: ID 148f:2573 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter Bus 001 Device 004: ID 03f0:4717 Hewlett-Packard Color LaserJet CP1215 Bus 001 Device 006: ID 18e3:7102 Fitipower Integrated Technology Inc Multi Card Reader (Internal) Bus 002 Device 002: ID 04f2:0618 Chicony Electronics Co., Ltd Bus 004 Device 002: ID 24ae:2000 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub 2. Plug in web camera 3. [iorsh@localhost ~]$ lsusb Bus 001 Device 007: ID 0ac8:c40a Z-Star Microelectronics Corp. Bus 001 Device 004: ID 03f0:4717 Hewlett-Packard Color LaserJet CP1215 Bus 001 Device 006: ID 18e3:7102 Fitipower Integrated Technology Inc Multi Card Reader (Internal) Bus 002 Device 002: ID 04f2:0618 Chicony Electronics Co., Ltd Bus 004 Device 002: ID 24ae:2000 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Actual results: Observe "Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter" now missing in the list Expected results: "Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter" present in the list Additional info: Sometimes all these devices (card reader, keyboard, mouse, printer, wifi, webcam) somehow manage to coexist, but then plugging in an iphone or a still camera causes one of them to die. WiFi or printer is usually the first, and then USB hot plugging breaks completely. For example, if I pull and replug the mouse, it won't be recognized.
Added echo -n "0000:00:13.5" > /sys/bus/pci/drivers/ehci_hcd/unbind to /etc/rc.d/rc.local . Now everything works.
Are you still seeing this with 3.7.9 or 3.8.2 in updates-testing?
On 3.7.9-104 in updates, no crashes anymore, but the webcam just doesn't work. All other USB 2.0 perpherals do fine and fast. Reverting back to uhci-hcd, webcam works fine. Do you want me to check explicitly updates-testing repository?
Not sure why it would only work when using uhci unless there is some bug in the hardware itself. Are you still seeing this with the 3.9.4 kernel in updates-testing?
Looks like the problem disappeared in kernel 3.8.13, camera works fine with hi-speed usb driver
Thanks for letting us know.