Hi, I have a A770Crossfire board from Asrock. With kernel 2.6.26.X and 2.6.27.[1,2,3,4] I have the following problem that makes usb mostly unusable. I have a 4 port hub attached. A logitech mouse receiver is inserted into one of its ports - it does not matter which one. Everything works fine. I turn on an external enclosure, which is either attached to one of the mainboards ports or the hub. Everything works for a couple of seconds. I mount the cdrom/harddisk partition and start copying a file - or just wait a couple of seconds. USB completly locks up. First the mouse, then a bit later the file transfer (so one was started) stops. Turning of the enclosure does not help, remving the receiver and reinserting it, does not help, not using the hub does not help. Only thing that brings back USB: rmmod ehci_hcd modprobe ehci-hcd rmmod and modprobe usb-storage does NOT help. after that I get another couple of seconds until it locks up again. If I modprobe ohci-hcd I get this: with 2.6.26 and the mouse at ohci, enclosure at ehci, everything works - but gaming (with fglrx loaded) is impossible, since the mouse is extremly jerky (shared interrupts). with 2.6.27 both mouse and enclose are driven by ohci - and copying works without locking up. Trying to 'force' ehci for the enclosure makes it lockup again. This happens with kernel.org kernels+reiser4. Another board with Nvidia nf520 chipset never showed this problems with 2.6.26. I have tried 3 different enclosures, one with a cdrom, two with harddisks, all three show the same symptoms. lsusb, mouse receiver in hub, only ehci loaded: Bus 002 Device 001: ID 1d6b:0002 Bus 001 Device 003: ID 046d:c518 Logitech, Inc. MX610 Laser Cordless Mouse Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 001 Device 001: ID 1d6b:0002 lsusb with cdrom in a usb enclosure: cat /home/lsusb_mit_cdrom Bus 002 Device 001: ID 1d6b:0002 Bus 001 Device 004: ID 05e3:0701 Genesys Logic, Inc. USB 2.0 IDE Adapter Bus 001 Device 003: ID 046d:c518 Logitech, Inc. MX610 Laser Cordless Mouse Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB Bus 001 Device 001: ID 1d6b:0002 interrupts: CPU0 CPU1 0: 14 1 IO-APIC-edge timer 1: 0 400 IO-APIC-edge i8042 8: 0 1 IO-APIC-edge rtc0 9: 0 0 IO-APIC-fasteoi acpi 12: 0 3 IO-APIC-edge i8042 17: 1 2449 IO-APIC-fasteoi ehci_hcd:usb1 19: 0 0 IO-APIC-fasteoi ehci_hcd:usb2 21: 0 4 IO-APIC-fasteoi bttv0 22: 4 11147 IO-APIC-fasteoi ahci 23: 0 0 IO-APIC-fasteoi EMU10K1 316: 0 232 PCI-MSI-edge eth0 NMI: 0 0 Non-maskable interrupts LOC: 97395 79417 Local timer interrupts RES: 9963 3848 Rescheduling interrupts CAL: 5881 1912 function call interrupts TLB: 224 177 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 dmesg parts: on boot: [ 7.906863] ehci_hcd 0000:00:12.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 7.906875] ehci_hcd 0000:00:12.2: EHCI Host Controller [ 7.906931] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1 [ 7.906969] ehci_hcd 0000:00:12.2: debug port 1 [ 7.906986] ehci_hcd 0000:00:12.2: irq 17, io mem 0xfddff000 [ 7.917509] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 7.917582] usb usb1: configuration #1 chosen from 1 choice [ 7.917603] hub 1-0:1.0: USB hub found [ 7.917609] hub 1-0:1.0: 6 ports detected [ 8.124261] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 8.124263] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 8.124265] usb usb1: Product: EHCI Host Controller [ 8.124266] usb usb1: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 8.124267] usb usb1: SerialNumber: 0000:00:12.2 [ 8.124290] ehci_hcd 0000:00:13.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 8.124300] ehci_hcd 0000:00:13.2: EHCI Host Controller [ 8.124335] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2 [ 8.124369] ehci_hcd 0000:00:13.2: debug port 1 [ 8.124387] ehci_hcd 0000:00:13.2: irq 19, io mem 0xfddf6800 [ 8.134180] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 8.134245] usb usb2: configuration #1 chosen from 1 choice [ 8.134268] hub 2-0:1.0: USB hub found [ 8.134274] hub 2-0:1.0: 6 ports detected [ 8.237599] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 [ 8.237602] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 8.237604] usb usb2: Product: EHCI Host Controller [ 8.237605] usb usb2: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 8.237606] usb usb2: SerialNumber: 0000:00:13.2 [ 8.240862] usb 1-2: new high speed USB device using ehci_hcd and address 2 8.365879] usb 1-2: configuration #1 chosen from 1 choice [ 8.366107] hub 1-2:1.0: USB hub found [ 8.366339] hub 1-2:1.0: 4 ports detected [ 8.574264] usb 1-2: New USB device found, idVendor=05e3, idProduct=0608 [ 8.574267] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 8.574269] usb 1-2: Product: USB2.0 Hub [ 8.641575] usb 1-2.2: new low speed USB device using ehci_hcd and address 3 [ 8.730973] usb 1-2.2: configuration #1 chosen from 1 choice [ 8.741415] input: Logitech USB Receiver as /class/input/input3 [ 8.774208] input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 8.780037] input: Logitech USB Receiver as /class/input/input4 [ 8.807569] input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 8.807631] usb 1-2.2: New USB device found, idVendor=046d, idProduct=c518 [ 8.807633] usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 8.807634] usb 1-2.2: Product: USB Receiver [ 8.807635] usb 1-2.2: Manufacturer: Logitech and turning on cdrom enclosure: [ 218.390824] usb 1-1: new high speed USB device using ehci_hcd and address 4 [ 218.524662] usb 1-1: configuration #1 chosen from 1 choice [ 218.525245] usb 1-1: New USB device found, idVendor=05e3, idProduct=0701 [ 218.525250] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [ 218.525252] usb 1-1: Product: USB Mass Storage Device [ 218.525253] usb 1-1: Manufacturer: Genesyslogic [ 218.564013] Initializing USB Mass Storage driver... [ 218.564639] scsi6 : SCSI emulation for USB Mass Storage devices [ 218.564720] usb-storage: device found at 4 [ 218.564725] usb-storage: waiting for device to settle before scanning [ 218.564732] usbcore: registered new interface driver usb-storage [ 218.564735] USB Mass Storage support registered. [ 223.563564] usb-storage: device scan complete [ 223.660792] scsi 6:0:0:0: CD-ROM _NEC DVD_RW ND-3500AG 2.19 PQ: 0 ANSI: 0 [ 223.661073] scsi 6:0:0:0: Attached scsi generic sg2 type 5 [ 223.675766] Driver 'sr' needs updating - please use bus_type methods [ 223.770898] sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray [ 223.770903] Uniform CD-ROM driver Revision: 3.20 [ 223.770972] sr 6:0:0:0: Attached scsi CD-ROM sr0 [ 291.280350] ISO 9660 Extensions: RRIP_1991A and here is where the funs starts: [ 332.634154] usb 1-1: reset high speed USB device using ehci_hcd and address 4 [ 347.770812] usb 1-1: device descriptor read/64, error -110 [ 363.010812] usb 1-1: device descriptor read/64, error -110 [ 363.220812] usb 1-1: reset high speed USB device using ehci_hcd and address 4 [ 378.357476] usb 1-1: device descriptor read/64, error -110 [ 393.544727] usb 1-1: USB disconnect, address 4 [ 393.545020] sr 6:0:0:0: Device offlined - not ready after error recovery [ 393.545033] sr 6:0:0:0: [sr0] Result: hostbyte=0x05 driverbyte=0x00 [ 393.545037] end_request: I/O error, dev sr0, sector 1662128 [ 393.545041] Buffer I/O error on device sr0, logical block 415532 [ 393.545045] Buffer I/O error on device sr0, logical block 415533 [ 393.545051] Buffer I/O error on device sr0, logical block 415534 [ 393.545054] Buffer I/O error on device sr0, logical block 415535 [ 393.545057] Buffer I/O error on device sr0, logical block 415536 [ 393.545060] Buffer I/O error on device sr0, logical block 415537 [ 393.545063] Buffer I/O error on device sr0, logical block 415538 [ 393.545066] Buffer I/O error on device sr0, logical block 415539 [ 393.545069] Buffer I/O error on device sr0, logical block 415540 [ 393.545072] Buffer I/O error on device sr0, logical block 415541 [ 393.545085] sr 6:0:0:0: rejecting I/O to offline device [ 393.545102] sr 6:0:0:0: rejecting I/O to offline device [ 393.545104] sr 6:0:0:0: rejecting I/O to offline device [ 393.545117] sr 6:0:0:0: rejecting I/O to offline device [ 393.545128] sr 6:0:0:0: rejecting I/O to offline device [ 393.545137] sr 6:0:0:0: rejecting I/O to offline device [ 393.545148] sr 6:0:0:0: rejecting I/O to offline device [ 393.545160] sr 6:0:0:0: rejecting I/O to offline device [ 393.545175] sr 6:0:0:0: rejecting I/O to offline device [ 393.545187] sr 6:0:0:0: rejecting I/O to offline device [ 393.545199] sr 6:0:0:0: rejecting I/O to offline device [ 393.545210] sr 6:0:0:0: rejecting I/O to offline device [ 393.545221] sr 6:0:0:0: rejecting I/O to offline device [ 393.545232] sr 6:0:0:0: rejecting I/O to offline device [ 393.545244] sr 6:0:0:0: rejecting I/O to offline device [ 393.545256] sr 6:0:0:0: rejecting I/O to offline device [ 393.545270] sr 6:0:0:0: [sr0] Result: hostbyte=0x01 driverbyte=0x00 [ 393.545272] end_request: I/O error, dev sr0, sector 1662192 [ 393.545313] VFS: busy inodes on changed media. [ 393.545481] sr 6:0:0:0: rejecting I/O to offline device [ 393.545486] sr 6:0:0:0: rejecting I/O to offline device [ 393.545603] sr 6:0:0:0: rejecting I/O to offline device [ 393.545611] sr 6:0:0:0: rejecting I/O to offline device [ 393.572083] scsi 6:0:0:0: rejecting I/O to dead device [ 393.572300] scsi 6:0:0:0: rejecting I/O to dead device [ 393.572369] scsi 6:0:0:0: rejecting I/O to dead device [ 400.120806] usb 1-1: new high speed USB device using ehci_hcd and address 5 [ 415.257471] usb 1-1: device descriptor read/64, error -110 [ 430.497470] usb 1-1: device descriptor read/64, error -110 [ 430.707468] usb 1-1: new high speed USB device using ehci_hcd and address 6 [ 439.049097] ehci_hcd 0000:00:13.2: remove, state 4 [ 439.049107] usb usb2: USB disconnect, address 1 [ 439.050329] ehci_hcd 0000:00:13.2: USB bus 2 deregistered [ 439.050399] ehci_hcd 0000:00:13.2: PCI INT B disabled [ 439.050409] ehci_hcd 0000:00:12.2: remove, state 1 [ 439.050414] usb usb1: USB disconnect, address 1 [ 440.727481] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 440.727487] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 440.727496] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 440.727498] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 440.727500] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 440.727502] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 440.727505] hub 1-0:1.0: unable to enumerate USB device on port 1 [ 440.727506] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 440.747470] usb 1-2: USB disconnect, address 2 [ 440.747474] usb 1-2.2: USB disconnect, address 3 [ 440.826627] ehci_hcd 0000:00:12.2: force halt; handhake ffffc2000004a024 0000c000 00000000 -> -110 [ 440.838259] ehci_hcd 0000:00:12.2: USB bus 1 deregistered [ 440.838451] ehci_hcd 0000:00:12.2: PCI INT B disabled [ 443.288544] ehci_hcd 0000:00:12.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 443.288562] ehci_hcd 0000:00:12.2: EHCI Host Controller [ 443.289133] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1 [ 443.289173] ehci_hcd 0000:00:12.2: debug port 1 [ 443.289185] ehci_hcd 0000:00:12.2: irq 17, io mem 0xfddff000 [ 443.300241] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 443.300352] usb usb1: configuration #1 chosen from 1 choice [ 443.300377] hub 1-0:1.0: USB hub found [ 443.300385] hub 1-0:1.0: 6 ports detected [ 443.507560] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 443.507564] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 443.507566] usb usb1: Product: EHCI Host Controller [ 443.507569] usb usb1: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 443.507571] usb usb1: SerialNumber: 0000:00:12.2 [ 443.507594] ehci_hcd 0000:00:13.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 443.507606] ehci_hcd 0000:00:13.2: EHCI Host Controller [ 443.507644] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2 [ 443.507679] ehci_hcd 0000:00:13.2: debug port 1 [ 443.507691] ehci_hcd 0000:00:13.2: irq 19, io mem 0xfddf6800 [ 443.517470] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 443.517556] usb usb2: configuration #1 chosen from 1 choice [ 443.517579] hub 2-0:1.0: USB hub found [ 443.517586] hub 2-0:1.0: 6 ports detected [ 443.620902] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 [ 443.620906] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 443.620908] usb usb2: Product: EHCI Host Controller [ 443.620910] usb usb2: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 443.620913] usb usb2: SerialNumber: 0000:00:13.2 [ 443.624147] usb 1-1: new high speed USB device using ehci_hcd and address 2 [ 443.757595] usb 1-1: configuration #1 chosen from 1 choice [ 443.760852] scsi7 : SCSI emulation for USB Mass Storage devices [ 443.761012] usb 1-1: New USB device found, idVendor=05e3, idProduct=0701 [ 443.761016] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [ 443.761018] usb 1-1: Product: USB Mass Storage Device [ 443.761019] usb 1-1: Manufacturer: Genesyslogic [ 443.761111] usb-storage: device found at 2 [ 443.761113] usb-storage: waiting for device to settle before scanning [ 443.867470] usb 1-2: new high speed USB device using ehci_hcd and address 3 [ 443.992571] usb 1-2: configuration #1 chosen from 1 choice [ 443.992786] hub 1-2:1.0: USB hub found [ 443.993136] hub 1-2:1.0: 4 ports detected [ 444.200888] usb 1-2: New USB device found, idVendor=05e3, idProduct=0608 [ 444.200892] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 444.200894] usb 1-2: Product: USB2.0 Hub [ 444.267751] usb 1-2.2: new low speed USB device using ehci_hcd and address 4 [ 444.358581] usb 1-2.2: configuration #1 chosen from 1 choice [ 444.368837] input: Logitech USB Receiver as /class/input/input5 [ 444.402089] input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 444.424061] input: Logitech USB Receiver as /class/input/input6 [ 444.457545] input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 444.457615] usb 1-2.2: New USB device found, idVendor=046d, idProduct=c518 [ 444.457617] usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 444.457619] usb 1-2.2: Product: USB Receiver [ 444.457620] usb 1-2.2: Manufacturer: Logitech [ 448.761103] usb-storage: device scan complete [ 448.762343] scsi 7:0:0:0: CD-ROM _NEC DVD_RW ND-3500AG 2.19 PQ: 0 ANSI: 0 [ 448.768983] sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray [ 448.770775] sr 7:0:0:0: Attached scsi CD-ROM sr0 [ 448.770921] sr 7:0:0:0: Attached scsi generic sg2 type 5 [ 557.656626] usb 1-1: reset high speed USB device using ehci_hcd and address 2 [ 572.793288] usb 1-1: device descriptor read/64, error -110 [ 587.357595] ehci_hcd 0000:00:13.2: remove, state 4 [ 587.357605] usb usb2: USB disconnect, address 1 [ 587.357833] ehci_hcd 0000:00:13.2: USB bus 2 deregistered [ 587.357897] ehci_hcd 0000:00:13.2: PCI INT B disabled [ 587.357908] ehci_hcd 0000:00:12.2: remove, state 1 [ 587.357913] usb usb1: USB disconnect, address 1 [ 587.357914] usb 1-1: USB disconnect, address 0 [ 587.926629] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 587.926634] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 587.926636] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 587.926828] sr 7:0:0:0: Device offlined - not ready after error recovery [ 587.926975] scsi 7:0:0:0: rejecting I/O to dead device [ 587.926981] scsi 7:0:0:0: rejecting I/O to dead device [ 587.926985] scsi 7:0:0:0: rejecting I/O to dead device [ 587.926989] scsi 7:0:0:0: rejecting I/O to dead device [ 587.927458] usb 1-2: USB disconnect, address 3 [ 587.927464] usb 1-2.2: USB disconnect, address 4 [ 588.024111] ehci_hcd 0000:00:12.2: force halt; handhake ffffc2000004a024 0000c000 00000000 -> -110 [ 588.036066] ehci_hcd 0000:00:12.2: USB bus 1 deregistered [ 588.036155] ehci_hcd 0000:00:12.2: PCI INT B disabled [ 590.188780] ehci_hcd 0000:00:12.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 590.188794] ehci_hcd 0000:00:12.2: EHCI Host Controller [ 590.188862] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1 [ 590.188900] ehci_hcd 0000:00:12.2: debug port 1 [ 590.188912] ehci_hcd 0000:00:12.2: irq 17, io mem 0xfddff000 [ 590.197454] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 590.197563] usb usb1: configuration #1 chosen from 1 choice [ 590.197587] hub 1-0:1.0: USB hub found [ 590.197595] hub 1-0:1.0: 6 ports detected [ 590.404219] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 590.404224] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 590.404226] usb usb1: Product: EHCI Host Controller [ 590.404228] usb usb1: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 590.404230] usb usb1: SerialNumber: 0000:00:12.2 [ 590.404254] ehci_hcd 0000:00:13.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 590.404266] ehci_hcd 0000:00:13.2: EHCI Host Controller [ 590.404305] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2 [ 590.404341] ehci_hcd 0000:00:13.2: debug port 1 [ 590.404353] ehci_hcd 0000:00:13.2: irq 19, io mem 0xfddf6800 [ 590.414122] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 590.414205] usb usb2: configuration #1 chosen from 1 choice [ 590.414229] hub 2-0:1.0: USB hub found [ 590.414236] hub 2-0:1.0: 6 ports detected [ 590.517549] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 [ 590.517553] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 590.517555] usb usb2: Product: EHCI Host Controller [ 590.517557] usb usb2: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 590.517560] usb usb2: SerialNumber: 0000:00:13.2 [ 590.520798] usb 1-2: new high speed USB device using ehci_hcd and address 2 [ 590.645820] usb 1-2: configuration #1 chosen from 1 choice [ 590.646034] hub 1-2:1.0: USB hub found [ 590.646385] hub 1-2:1.0: 4 ports detected [ 590.854211] usb 1-2: New USB device found, idVendor=05e3, idProduct=0608 [ 590.854215] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 590.854217] usb 1-2: Product: USB2.0 Hub [ 590.921122] usb 1-2.2: new low speed USB device using ehci_hcd and address 3 [ 591.011038] usb 1-2.2: configuration #1 chosen from 1 choice [ 591.023018] input: Logitech USB Receiver as /class/input/input7 [ 591.065109] input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 591.080005] input: Logitech USB Receiver as /class/input/input8 [ 591.118378] input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 591.118449] usb 1-2.2: New USB device found, idVendor=046d, idProduct=c518 [ 591.118451] usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 591.118452] usb 1-2.2: Product: USB Receiver [ 591.118453] usb 1-2.2: Manufacturer: Logitech and again: mouse works, I turn on cdrom: [ 1494.097363] usb 1-1: new high speed USB device using ehci_hcd and address 4 [ 1494.230935] usb 1-1: configuration #1 chosen from 1 choice [ 1494.231387] scsi8 : SCSI emulation for USB Mass Storage devices [ 1494.231653] usb 1-1: New USB device found, idVendor=05e3, idProduct=0701 [ 1494.231658] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [ 1494.231660] usb 1-1: Product: USB Mass Storage Device [ 1494.231661] usb 1-1: Manufacturer: Genesyslogic [ 1494.231665] usb-storage: device found at 4 [ 1494.231667] usb-storage: waiting for device to settle before scanning [ 1499.230962] usb-storage: device scan complete [ 1499.258449] scsi 8:0:0:0: CD-ROM _NEC DVD_RW ND-3500AG 2.19 PQ: 0 ANSI: 0 [ 1499.350559] sr0: scsi3-mmc drive: 48x/48x writer cd/rw xa/form2 cdda tray [ 1499.351554] sr 8:0:0:0: Attached scsi CD-ROM sr0 [ 1499.351688] sr 8:0:0:0: Attached scsi generic sg2 type 5 [ 1531.767361] usb 1-1: reset high speed USB device using ehci_hcd and address 4 [ 1546.904030] usb 1-1: device descriptor read/64, error -110 [ 1562.144026] usb 1-1: device descriptor read/64, error -110 [ 1562.354025] usb 1-1: reset high speed USB device using ehci_hcd and address 4 and it locks up. I rmmod & modprobe ehci [ 1571.031747] ehci_hcd 0000:00:13.2: remove, state 4 [ 1571.031757] usb usb2: USB disconnect, address 1 [ 1571.031991] ehci_hcd 0000:00:13.2: USB bus 2 deregistered [ 1571.032056] ehci_hcd 0000:00:13.2: PCI INT B disabled [ 1571.032064] ehci_hcd 0000:00:12.2: remove, state 1 [ 1571.032070] usb usb1: USB disconnect, address 1 [ 1571.032071] usb 1-1: USB disconnect, address 0 [ 1572.374030] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 1572.374036] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 1572.374039] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 1572.374435] scsi 8:0:0:0: Device offlined - not ready after error recovery [ 1572.374575] usb 1-2: USB disconnect, address 2 [ 1572.374581] usb 1-2.2: USB disconnect, address 3 [ 1572.377436] scsi 8:0:0:0: rejecting I/O to dead device [ 1572.377451] scsi 8:0:0:0: rejecting I/O to dead device [ 1572.377456] scsi 8:0:0:0: rejecting I/O to dead device [ 1572.477346] ehci_hcd 0000:00:12.2: force halt; handhake ffffc2000004a024 0000c000 00000000 -> -110 [ 1572.489340] ehci_hcd 0000:00:12.2: USB bus 1 deregistered [ 1572.489430] ehci_hcd 0000:00:12.2: PCI INT B disabled [ 1574.758187] ehci_hcd 0000:00:12.2: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 1574.758204] ehci_hcd 0000:00:12.2: EHCI Host Controller [ 1574.758801] ehci_hcd 0000:00:12.2: new USB bus registered, assigned bus number 1 [ 1574.758841] ehci_hcd 0000:00:12.2: debug port 1 [ 1574.758854] ehci_hcd 0000:00:12.2: irq 17, io mem 0xfddff000 [ 1574.770181] ehci_hcd 0000:00:12.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 1574.770293] usb usb1: configuration #1 chosen from 1 choice [ 1574.770318] hub 1-0:1.0: USB hub found [ 1574.770326] hub 1-0:1.0: 6 ports detected [ 1574.977449] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 1574.977454] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 1574.977456] usb usb1: Product: EHCI Host Controller [ 1574.977458] usb usb1: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 1574.977460] usb usb1: SerialNumber: 0000:00:12.2 [ 1574.977483] ehci_hcd 0000:00:13.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19 [ 1574.977496] ehci_hcd 0000:00:13.2: EHCI Host Controller [ 1574.977536] ehci_hcd 0000:00:13.2: new USB bus registered, assigned bus number 2 [ 1574.977571] ehci_hcd 0000:00:13.2: debug port 1 [ 1574.977583] ehci_hcd 0000:00:13.2: irq 19, io mem 0xfddf6800 [ 1574.987358] ehci_hcd 0000:00:13.2: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 [ 1574.987442] usb usb2: configuration #1 chosen from 1 choice [ 1574.987470] hub 2-0:1.0: USB hub found [ 1574.987477] hub 2-0:1.0: 6 ports detected [ 1575.090791] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002 [ 1575.090796] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 1575.090798] usb usb2: Product: EHCI Host Controller [ 1575.090800] usb usb2: Manufacturer: Linux 2.6.27.4r4 ehci_hcd [ 1575.090803] usb usb2: SerialNumber: 0000:00:13.2 [ 1575.094032] usb 1-1: new high speed USB device using ehci_hcd and address 2 [ 1575.227511] usb 1-1: configuration #1 chosen from 1 choice [ 1575.227959] scsi9 : SCSI emulation for USB Mass Storage devices [ 1575.228120] usb 1-1: New USB device found, idVendor=05e3, idProduct=0701 [ 1575.228124] usb 1-1: New USB device strings: Mfr=2, Product=3, SerialNumber=0 [ 1575.228126] usb 1-1: Product: USB Mass Storage Device [ 1575.228127] usb 1-1: Manufacturer: Genesyslogic [ 1575.228219] usb-storage: device found at 2 [ 1575.228220] usb-storage: waiting for device to settle before scanning [ 1575.334022] usb 1-2: new high speed USB device using ehci_hcd and address 3 [ 1575.459111] usb 1-2: configuration #1 chosen from 1 choice [ 1575.459328] hub 1-2:1.0: USB hub found [ 1575.459679] hub 1-2:1.0: 4 ports detected [ 1575.667443] usb 1-2: New USB device found, idVendor=05e3, idProduct=0608 [ 1575.667447] usb 1-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 1575.667448] usb 1-2: Product: USB2.0 Hub [ 1575.734416] usb 1-2.2: new low speed USB device using ehci_hcd and address 4 [ 1575.824203] usb 1-2.2: configuration #1 chosen from 1 choice [ 1575.835976] input: Logitech USB Receiver as /class/input/input9 [ 1575.864086] input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 1575.870254] input: Logitech USB Receiver as /class/input/input10 [ 1575.917434] input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:12.2-2.2 [ 1575.917505] usb 1-2.2: New USB device found, idVendor=046d, idProduct=c518 [ 1575.917507] usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 1575.917508] usb 1-2.2: Product: USB Receiver [ 1575.917509] usb 1-2.2: Manufacturer: Logitech config is attached. complete dmesg is attached. lsmod is attached. lspci -vvv is attached Glück Auf, Volker