On Tue, 4 Jul 2006, Foli Ayivoh wrote: > > You're welcome. The _real_ test will be to see what shows up in the log > > when you disconnect the KVM switch... > > > > Alan Stern > > > Connecting the keyboard directly (without the KVM-SWITCH) > to the "HOST ONE" (Kernel 2.6.17) I get this: > > e84b0540 1372195667 C Ii:007:01 0 8 = 00000000 00000000 > e84b0540 1372195688 S Ii:007:01 -115 8 < > e84b0540 1374779316 C Ii:007:01 0 8 = 01000000 00000000 > e84b0540 1374779330 S Ii:007:01 -115 8 < > e84b0540 1374875304 C Ii:007:01 0 8 = 01000600 00000000 > e84b0540 1374875316 S Ii:007:01 -115 8 < > > So everything is fine with the keyboard! > > > A new attempt for the "USB-STORAGE" boot device: > > "USB-STORAGE" boot device connected directly to the "HOST ONE" > I get this dmesg on boot device hang: > > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > usb 1-2: reset high speed USB device using ehci_hcd and address 2 > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > usb 1-2: reset high speed USB device using ehci_hcd and address 2 > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > usb 1-2: reset high speed USB device using ehci_hcd and address 2 > ehci_hcd 0000:00:02.2: port 2 high speed > ehci_hcd 0000:00:02.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT > > I would say the device hang will occur by accessing the device in some kind > of way > for the first time. > > e.g. I did 'dmesg | grep usb', then the device will hang after some seconds > ~15 > after the device is back, I did the same thing, but it will not hang. > > But the device will also hang without my actions, but always when read/write > is performed. > > If there is no read/write at all, then no device hangs! > > > This is a dump of usbmon, when there was an device hang once:
The dump shows that the drive just stopped responding at one spot and then was reset. Sometimes devices do that; nobody seems to know why. The real test is to use CONFIG_USB_STORAGE_DEBUG when you boot off the USB device. 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-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
