I can confirm the bug in Hardy kernel 2.6.24-19-generic with an AMD 780G board with SB700 southbridge (A Gigabyte GA-MA78GM-S2H). The bug only appears when using USB mass-storage devices. I have used the following script to recover from the error: # modprobe -r ehci_hcd # sleep 1 # modprobe ehci_hcd
I have just tried the following as described above: # echo -1 > /sys/module/usbcore/parameters/autosuspend And it seems to make the problem disappear :-) $ lsusb Bus 007 Device 002: ID 07cc:0501 Carry Computer Eng., Co., Ltd Bus 007 Device 001: ID 0000:0000 Bus 006 Device 006: ID 05ac:0221 Apple Computer, Inc. Bus 006 Device 005: ID 05ac:1006 Apple Computer, Inc. Hub in Apple Aluminum Keyboard Bus 006 Device 004: ID 046d:c046 Logitech, Inc. Bus 006 Device 003: ID 03f0:2112 Hewlett-Packard Bus 006 Device 002: ID 0424:2504 Standard Microsystems Corp. USB 2.0 Hub Bus 006 Device 001: ID 0000:0000 Bus 005 Device 001: ID 0000:0000 Bus 004 Device 001: ID 0000:0000 Bus 001 Device 001: ID 0000:0000 Bus 003 Device 001: ID 0000:0000 Bus 002 Device 001: ID 0000:0000 -- 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
