Hi, I have a nice logitech wireless mouse. With 2.6.30 and earlier it works well. With 2.6.31 it sometimes kills the ehci bus, if I scroll too fast. Very slow scrolling is ok, not scrolling is ok. Fast scrolling, bus is dead and dmesg looks like this: [ 879.193292] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.193308] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.193316] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.193325] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.193774] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.193780] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.253291] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.253306] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.253312] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.253319] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.253770] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.253776] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.267040] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.267055] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.267063] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.267071] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.267666] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.267675] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.280372] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.280386] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.280392] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.280400] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.281539] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.281548] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.341202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.341216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.341222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.341229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.341788] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.341797] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.401202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.401216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.401222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.401230] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.402035] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.402043] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.461202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.461216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.461222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.461229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.461778] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.461786] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.521203] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.521217] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.521223] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.521230] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.522027] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.522035] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.581204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.581218] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.581224] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.581232] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.581765] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.581773] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.641198] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.641212] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.641218] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.641226] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.642018] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.642027] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.701202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.701216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.701222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.701230] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.701762] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.701770] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.761201] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.761215] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.761221] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.761229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.762010] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.762018] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.821206] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.821220] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.821226] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.821234] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.821763] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.821771] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.881203] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.881217] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.881223] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.881230] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.882001] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.882010] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.941205] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.941219] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.941225] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.941233] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 879.941721] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 879.941727] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.000665] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.000679] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.000686] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.000694] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.001243] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.001251] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.061201] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.061215] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.061221] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.061228] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.061712] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.061718] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.121200] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.121213] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.121219] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.121226] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.121982] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.121990] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.181204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.181217] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.181223] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.181231] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.181704] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.181710] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.241202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.241216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.241222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.241229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.241973] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.241982] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.301205] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.301218] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.301224] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.301232] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.301696] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.301702] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.361202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.361216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.361222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.361229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.361965] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.361973] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.421204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.421218] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.421224] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.421231] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.421687] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.421693] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.481202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.481216] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.481222] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.481229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.481957] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.481965] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.541204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.541218] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.541224] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.541231] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.541827] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.541835] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.600584] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.600597] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.600603] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.600611] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.601210] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.601218] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.661204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.661218] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.661224] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.661231] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.661670] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.661676] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.721202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.721215] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.721221] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.721229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.721940] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.721948] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.781204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.781217] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.781223] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.781231] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.781662] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.781668] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.841202] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.841215] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.841221] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.841229] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.841931] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.841939] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.901204] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.901217] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.901223] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.901230] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.901653] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.901659] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.959949] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.959963] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.959969] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.959977] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 880.960400] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 880.960406] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.019964] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.019979] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.019987] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.019995] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.021057] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.021066] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.080653] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.080667] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.080673] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.080681] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.081143] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.081149] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.140567] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.140581] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.140587] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.140594] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.141652] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.141661] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.200516] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.200529] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.200535] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.200543] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.201156] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.201165] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.260490] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.260504] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.260510] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.260517] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.261049] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.261057] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.319954] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.319969] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.319976] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.319984] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.320387] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.320394] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.380653] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.380666] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.380672] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.380680] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.381627] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.381633] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.440598] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.440611] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.440618] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.440625] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.441159] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.441167] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.500563] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.500577] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.500583] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.500590] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.501625] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.501634] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.560402] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.560415] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.560421] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.560428] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.561132] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.561140] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.619961] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.619974] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.619980] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.619988] usb 1-2.2: unlink qh8-0601/ffff8800c78003c0 start 3 [1/2 us] [ 881.620877] ehci_hcd 0000:00:12.2: reused qh ffff8800c78003c0 schedule [ 881.620885] usb 1-2.2: link qh8-0601/ffff8800c78003c0 start 3 [1/2 us] and the only thing to get the mouse back is rmmod ehci_hcd modprobe ehci_hcd. It does not happen everytime - of course always if it is most annoying and never when I really don't care ;) mouse is attached to a 4port revoltec disk usb 2.0 hub with an external power brick. When I want to attach the mouse directly, I have to load ohci_hcd FIRST. AND after that lsusb just hangs, but I seem to be able to scroll as much as I want. 2762.596422] ohci_hcd 0000:00:14.5: auto-stop root hub [ 2762.596444] ohci_hcd 0000:00:13.1: auto-stop root hub [ 2762.596460] ohci_hcd 0000:00:13.0: auto-stop root hub [ 2762.596476] ohci_hcd 0000:00:12.0: auto-stop root hub [ 2764.317678] hub 7-0:1.0: hub_suspend [ 2764.317693] usb usb7: bus auto-suspend [ 2764.317701] ohci_hcd 0000:00:14.5: suspend root hub [ 2764.317711] hub 6-0:1.0: hub_suspend [ 2764.317717] usb usb6: bus auto-suspend [ 2764.317722] ohci_hcd 0000:00:13.1: suspend root hub [ 2764.317730] hub 5-0:1.0: hub_suspend [ 2764.317736] usb usb5: bus auto-suspend [ 2764.317741] ohci_hcd 0000:00:13.0: suspend root hub [ 2764.317748] hub 3-0:1.0: hub_suspend [ 2764.317753] usb usb3: bus auto-suspend [ 2764.317758] ohci_hcd 0000:00:12.0: suspend root hub [ 2764.317766] hub 2-0:1.0: hub_suspend [ 2764.317771] usb usb2: bus auto-suspend [ 2764.317775] ehci_hcd 0000:00:13.2: suspend root hub [ 2766.703520] usb 1-2: lsusb timed out on ep0in len=0/2 [ 2766.703529] usb 1-2: retry with reset-resume [ 2766.756878] ehci_hcd 0000:00:12.2: port 2 high speed [ 2766.756891] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 2766.810184] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [ 2771.819775] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2776.830158] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2781.839773] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2781.893563] ehci_hcd 0000:00:12.2: port 2 high speed [ 2781.893576] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 2781.946445] usb 1-2: device descriptor read/64, error -110 [ 2787.059772] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2792.069779] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2797.079778] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2797.133554] ehci_hcd 0000:00:12.2: port 2 high speed [ 2797.133567] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 2797.186444] usb 1-2: device descriptor read/64, error -110 [ 2797.343527] ehci_hcd 0000:00:12.2: port 2 high speed [ 2797.343540] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 2797.396442] usb 1-2: reset high speed USB device using ehci_hcd and address 2 [ 2802.406446] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2807.416445] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2812.426443] usb 1-2: lsusb timed out on ep0in len=0/64 [ 2812.480192] ehci_hcd 0000:00:12.2: port 2 high speed [ 2812.480205] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT [ 2812.533519] usb 1-2: device descriptor read/64, error -110 [ 2817.646850] usb 1-2: lsusb timed out on ep0in len=0/64 Here is lspci: lspci -v 00:00.0 Host bridge: ATI Technologies Inc RX780/RX790 Chipset Host Bridge Subsystem: ASRock Incorporation A770CrossFire Motherboard Flags: bus master, 66MHz, medium devsel, latency 0 Memory at (64-bit, non-prefetchable) Capabilities: [c4] HyperTransport: Slave or Primary Interface Capabilities: [40] HyperTransport: Retry Mode Capabilities: [54] HyperTransport: UnitID Clumping Capabilities: [9c] HyperTransport: #1a 00:02.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (external gfx0 port A) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: fdf00000-fdffffff Prefetchable memory behind bridge: 00000000d0000000-00000000dfffffff Capabilities: [50] Power Management version 3 Capabilities: [58] Express Root Port (Slot-), MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [b0] Subsystem: ASRock Incorporation A770CrossFire Motherboard Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+ Capabilities: [100] Vendor Specific Information Capabilities: [110] Virtual Channel Kernel driver in use: pcieport-driver 00:09.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (PCI express gpp port E) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=04, sec-latency=0 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: fe000000-febfffff Prefetchable memory behind bridge: 00000000fa000000-00000000fcefffff Capabilities: [50] Power Management version 3 Capabilities: [58] Express Root Port (Slot-), MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [b0] Subsystem: ASRock Incorporation A770CrossFire Motherboard Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+ Capabilities: [100] Vendor Specific Information Capabilities: [110] Virtual Channel Kernel driver in use: pcieport-driver 00:0a.0 PCI bridge: ATI Technologies Inc RD790 PCI to PCI bridge (PCI express gpp port F) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 0000b000-0000bfff Memory behind bridge: fde00000-fdefffff Prefetchable memory behind bridge: 00000000cff00000-00000000cfffffff Capabilities: [50] Power Management version 3 Capabilities: [58] Express Root Port (Slot-), MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [b0] Subsystem: ASRock Incorporation A770CrossFire Motherboard Capabilities: [b8] HyperTransport: MSI Mapping Enable+ Fixed+ Capabilities: [100] Vendor Specific Information Capabilities: [110] Virtual Channel Kernel driver in use: pcieport-driver 00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [AHCI mode] (prog-if 01 [AHCI 1.0]) Subsystem: ASRock Incorporation Device 4391 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 22 I/O ports at a000 [size=8] I/O ports at 9000 [size=4] I/O ports at 8000 [size=8] I/O ports at 7000 [size=4] I/O ports at 6000 [size=16] Memory at fddff800 (32-bit, non-prefetchable) [size=1K] Capabilities: [60] Power Management version 2 Capabilities: [70] SATA HBA Kernel driver in use: ahci 00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller (prog-if 10 [OHCI]) Subsystem: ASRock Incorporation Device 4397 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 7 Memory at fddfe000 (32-bit, non-prefetchable) [size=4K] Kernel modules: ohci-hcd 00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller (prog- if 10 [OHCI]) Subsystem: ASRock Incorporation Device 4398 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 7 Memory at fddfd000 (32-bit, non-prefetchable) [size=4K] Kernel modules: ohci-hcd 00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller (prog-if 20 [EHCI]) Subsystem: ASRock Incorporation Device 4396 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 17 Memory at fddff000 (32-bit, non-prefetchable) [size=256] Capabilities: [c0] Power Management version 2 Capabilities: [e4] Debug port: BAR=1 offset=00e0 Kernel driver in use: ehci_hcd Kernel modules: ehci-hcd 00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller (prog-if 10 [OHCI]) Subsystem: ASRock Incorporation Device 4397 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 10 Memory at fddfc000 (32-bit, non-prefetchable) [size=4K] Kernel modules: ohci-hcd 00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller (prog- if 10 [OHCI]) Subsystem: ASRock Incorporation Device 4398 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 10 Memory at fddf7000 (32-bit, non-prefetchable) [size=4K] Kernel modules: ohci-hcd 00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller (prog-if 20 [EHCI]) Subsystem: ASRock Incorporation Device 4396 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 19 Memory at fddf6800 (32-bit, non-prefetchable) [size=256] Capabilities: [c0] Power Management version 2 Capabilities: [e4] Debug port: BAR=1 offset=00e0 Kernel driver in use: ehci_hcd Kernel modules: ehci-hcd 00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a) Subsystem: ASRock Incorporation Device 4385 Flags: 66MHz, medium devsel Capabilities: [b0] HyperTransport: MSI Mapping Enable- Fixed+ Kernel modules: i2c-piix4 00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller (prog- if 8a [Master SecP PriP]) Subsystem: ASRock Incorporation Device 439c Flags: bus master, 66MHz, medium devsel, latency 0 I/O ports at 01f0 [size=8] I/O ports at 03f4 [size=1] I/O ports at 0170 [size=8] I/O ports at 0374 [size=1] I/O ports at ff00 [size=16] Capabilities: [70] MSI: Enable- Count=1/1 Maskable- 64bit- 00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller Subsystem: ASRock Incorporation Device 439d Flags: bus master, 66MHz, medium devsel, latency 0 00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge (prog-if 01 [Subtractive decode]) Flags: bus master, 66MHz, medium devsel, latency 64 Bus: primary=00, secondary=05, subordinate=05, sec-latency=64 I/O behind bridge: 0000e000-0000efff Prefetchable memory behind bridge: fcf00000-fcffffff 00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller (prog-if 10 [OHCI]) Subsystem: ASRock Incorporation Device 4399 Flags: bus master, 66MHz, medium devsel, latency 128, IRQ 10 Memory at fddf5000 (32-bit, non-prefetchable) [size=4K] Kernel modules: ohci-hcd 00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration Flags: fast devsel Capabilities: [80] HyperTransport: Host or Secondary Interface 00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map Flags: fast devsel 00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller Flags: fast devsel 00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control Flags: fast devsel Capabilities: [f0] Secure device 00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control Flags: fast devsel 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) Subsystem: ASRock Incorporation Motherboard (one of many) Flags: bus master, fast devsel, latency 0, IRQ 28 I/O ports at b800 [size=256] Memory at cffff000 (64-bit, prefetchable) [size=4K] Memory at cffe0000 (64-bit, prefetchable) [size=64K] Expansion ROM at fdef0000 [disabled] [size=64K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/2 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [b0] MSI-X: Enable- Count=2 Masked- Capabilities: [d0] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 78-56-34-12-68-4c-e0-00 Kernel driver in use: r8169 Kernel modules: r8169 02:00.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3870 (prog- if 00 [VGA controller]) Subsystem: Info-Tek Corp. Device 4070 Flags: bus master, fast devsel, latency 0, IRQ 29 Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at fdff0000 (64-bit, non-prefetchable) [size=64K] I/O ports at c000 [size=256] Expansion ROM at fdfc0000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information Kernel driver in use: fglrx_pci Kernel modules: fglrx 02:00.1 Audio device: ATI Technologies Inc Radeon HD 3870 Audio device Subsystem: Info-Tek Corp. Device aa18 Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at fdfec000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information Kernel modules: snd-hda-intel 05:06.0 Multimedia video controller: Brooktree Corporation Bt848 Video Capture (rev 12) Flags: bus master, medium devsel, latency 128, IRQ 21 Memory at fcfff000 (32-bit, prefetchable) [size=4K] Kernel driver in use: bttv Kernel modules: bttv 05:08.0 Multimedia audio controller: Creative Labs SB0400 Audigy2 Value Subsystem: Creative Labs Device 1001 Flags: bus master, medium devsel, latency 128, IRQ 23 I/O ports at e800 [size=64] Capabilities: [dc] Power Management version 2 Kernel driver in use: EMU10K1_Audigy Kernel modules: snd-emu10k1 lsusb: lsusb -v Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 2.06 iManufacturer 3 Linux 2.6.31r4 ehci_hcd iProduct 2 EHCI Host Controller iSerial 1 0000:00:13.2 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 6 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0100 power Port 3: 0000.0100 power Port 4: 0000.0100 power Port 5: 0000.0100 power Port 6: 0000.0100 power Device Status: 0x0003 Self Powered Remote Wakeup Enabled Bus 001 Device 003: ID 046d:c518 Logitech, Inc. MX610 Laser Cordless Mouse Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x046d Logitech, Inc. idProduct 0xc518 MX610 Laser Cordless Mouse bcdDevice 42.03 iManufacturer 1 Logitech iProduct 2 USB Receiver iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 59 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 4 RR42.03_B0039 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 98mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 2 Mouse iInterface 0 ** UNRECOGNIZED: 09 21 11 01 00 01 22 43 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 10 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 No Subclass bInterfaceProtocol 0 None iInterface 0 ** UNRECOGNIZED: 09 21 11 01 00 01 22 4f 00 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 10 Device Status: 0x0000 (Bus Powered) Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x05e3 Genesys Logic, Inc. idProduct 0x0608 USB-2.0 4-Port HUB bcdDevice 7.02 iManufacturer 0 iProduct 1 USB2.0 Hub iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0001 1x 1 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 4 wHubCharacteristic 0x00e9 Per-port power switching Per-port overcurrent protection TT think time 32 FS bits Port indicators bPwrOn2PwrGood 50 * 2 milli seconds bHubContrCurrent 100 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0303 lowspeed power enable connect Port 3: 0000.0100 power Port 4: 0000.0100 power Device Qualifier (for other device speed): bLength 10 bDescriptorType 6 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 bNumConfigurations 1 Device Status: 0x0003 Self Powered Remote Wakeup Enabled Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 Unused bDeviceProtocol 0 Full speed (or root) hub bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 2.06 iManufacturer 3 Linux 2.6.31r4 ehci_hcd iProduct 2 EHCI Host Controller iSerial 1 0000:00:12.2 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 Unused bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 6 wHubCharacteristic 0x000a No power switching (usb 1.0) Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0503 highspeed power enable connect Port 3: 0000.0100 power Port 4: 0000.0100 power Port 5: 0000.0100 power Port 6: 0000.0100 power Device Status: 0x0003 Self Powered Remote Wakeup Enabled config&dmesg are attached. Glück Auf, Volker ps. if you think it makes a difference I can redo it without fglrx. pps. please cc me, not subscribed.