So, if I run: dmesg | grep ehci*
I get: [ 0.892115] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.892479] ehci_hcd 0000:00:02.1: PCI INT B -> Link[LUB2] -> GSI 22 (level, low) -> IRQ 22 [ 0.892492] ehci_hcd 0000:00:02.1: setting latency timer to 64 [ 0.892496] ehci_hcd 0000:00:02.1: EHCI Host Controller [ 0.892547] ehci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 1 [ 0.892571] ehci_hcd 0000:00:02.1: debug port 1 [ 0.892575] ehci_hcd 0000:00:02.1: cache line size of 64 is not supported [ 0.892593] ehci_hcd 0000:00:02.1: irq 22, io mem 0xfeafec00 [ 0.904018] ehci_hcd 0000:00:02.1: USB 2.0 started, EHCI 1.00 [ 0.904459] ehci_hcd 0000:00:04.1: PCI INT B -> Link[UB12] -> GSI 21 (level, low) -> IRQ 21 [ 0.904467] ehci_hcd 0000:00:04.1: setting latency timer to 64 [ 0.904469] ehci_hcd 0000:00:04.1: EHCI Host Controller [ 0.904503] ehci_hcd 0000:00:04.1: new USB bus registered, assigned bus number 2 [ 0.904524] ehci_hcd 0000:00:04.1: debug port 1 [ 0.904528] ehci_hcd 0000:00:04.1: cache line size of 64 is not supported [ 0.904544] ehci_hcd 0000:00:04.1: irq 21, io mem 0xfeafe800 [ 0.916016] ehci_hcd 0000:00:04.1: USB 2.0 started, EHCI 1.00 [ 1.340016] usb 2-3: new high speed USB device using ehci_hcd and address 3 [ 4478.536017] usb 1-3: new high speed USB device using ehci_hcd and address 2 [ 6973.480021] usb 2-3: new high speed USB device using ehci_hcd and address 4 [ 6975.872018] usb 2-3: new high speed USB device using ehci_hcd and address 5 [10677.680020] usb 2-3: new high speed USB device using ehci_hcd and address 7 [12922.100581] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [12958.113018] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [12991.113026] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [13030.113026] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [...] [16805.101018] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [16840.101019] usb 2-3: reset high speed USB device using ehci_hcd and address 7 [16872.101024] usb 2-3: reset high speed USB device using ehci_hcd and address 7 But if I run: modprobe -r ehci_hcd I get: FATAL: Module ehci_hcd not found. Is my kernel (2.6.31-17) haunted by the ghost of this THREE YEAR OLD bug? Also, changing 'scheduler' doesn't help. Changing 'max_sectors' doesn't help. -- ehci_hcd module causes I/O errors in USB 2.0 devices https://bugs.launchpad.net/bugs/88746 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs