On Thu, 19 Oct 2006, Nicolas Linkert wrote: > Hi, > > I've a strange USB 2.0 problem. Whenever I attach a USB mass storage > device to my USB ports (no matter whether the port is in the back or the > front of the PC) it simply won't work. When I get rid of the ehci module > and load the ohci module, the PC recognizes the USB hard disk without > any problem. > Yes, it is a USB 2.0 hard disk. > Yes, the ports themselves are 2.0 (BTW: Is it possible that they're > "half broken"? Working only in USB 1.1 mode?) > > The error message I get for the USB hard disk: > > usb 2-1: new high speed USB device using ehci_hcd and address 3 > usb 2-1: unable to read config index 0 descriptor/all > usb 2-1: can't read configurations, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 4 > usb 2-1: unable to read config index 0 descriptor/all > usb 2-1: can't read configurations, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 5 > usb 2-1: unable to read config index 0 descriptor/start > usb 2-1: can't read configurations, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 6 > usb 2-1: unable to read config index 0 descriptor/start > usb 2-1: can't read configurations, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 7 > usb 2-1: device not accepting address 7, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 8 > usb 2-1: unable to read config index 0 descriptor/start > usb 2-1: can't read configurations, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 9 > usb 2-1: device descriptor read/all, error -110 > usb 2-1: new high speed USB device using ehci_hcd and address 10 > usb 2-1: device descriptor read/all, error -110
The ports must be working somewhat. Otherwise you wouldn't get those "unable to read config index 0" messages. > The same error messages apply for a USB stick. > > After removing ehci and using ohci: > > usb 1-1: new full speed USB device using ohci_hcd and address 5 > usb 1-1: configuration #1 chosen from 1 choice > Initializing USB Mass Storage driver... > scsi4 : SCSI emulation for USB Mass Storage devices > usbcore: registered new driver usb-storage > USB Mass Storage support registered. > usb-storage: device found at 5 > usb-storage: waiting for device to settle before scanning > Vendor: ST325082 Model: 4A Rev: 0811 > Type: Direct-Access ANSI SCSI revision: 00 > SCSI device sdc: 488397168 512-byte hdwr sectors (250059 MB) > sdc: test WP failed, assume Write Enabled > sdc: assuming drive cache: write through > SCSI device sdc: 488397168 512-byte hdwr sectors (250059 MB) > sdc: test WP failed, assume Write Enabled > sdc: assuming drive cache: write through > sdc: sdc1 > sd 4:0:0:0: Attached scsi disk sdc > usb-storage: device scan complete > > Huh? I don't get it. Maybe anyone here can enlighten me. > BTW: mobo is Asus K8N-DL with nforce4 chipset. The devices are unable to communicate properly with your computer. Do any high-speed devices work at all? Maybe your EHCI host controller isn't working very well. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
