On Thu, 25 Mar 2010, Justin Piszcz wrote: > # cat /sys/kernel/debug/usb/devices > > T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 8 > B: Alloc= 26/900 us ( 3%), #Int= 2, #Iso= 0 > D: Ver= 1.10 Cls=09(hub ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=1d6b ProdID=0001 Rev= 2.06 > S: Manufacturer=Linux 2.6.33 ohci_hcd > S: Product=OHCI Host Controller > S: SerialNumber=0000:00:0b.0 > C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 0mA > I:* If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub > E: Ad=81(I) Atr=03(Int.) MxPS= 2 Ivl=255ms > > T: Bus=02 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#= 2 Spd=1.5 MxCh= 0 > D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > P: Vendor=413c ProdID=2005 Rev= 1.05 > S: Manufacturer=DELL > S: Product=DELL USB Keyboard > C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA > I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid > E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=10ms > > T: Bus=02 Lev=01 Prnt=01 Port=05 Cnt=02 Dev#= 3 Spd=1.5 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 > P: Vendor=046d ProdID=c018 Rev=43.01 > S: Manufacturer=Logitech > S: Product=USB Optical Mouse > C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA > I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid > E: Ad=81(I) Atr=03(Int.) MxPS= 5 Ivl=10ms All right, the problematic mouse is attached to bus 2 (as is the keyboard). So the next step is to run a kernel with CONFIG_USB_DEBUG enabled. When the mouse stops working, go to /sys/kernel/debug/usb/ohci/0000:00:0b.0 and see what the various files in that directory contain. Also, check if any additional debugging info shows up in the system log. > > Suppose you don't run X at all. Do the mouse and keyboard eventually > > stop working even then? > I have not tried that, the reason I use the host locally is for X. You should try it anyway. If the failure still occurs, then you can rule out any connection with X or the nVidia graphics. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
