My enclosure seems to work stable with 2.6.21.5 For the time being I didn't try Ubuntu with this kernel, but all the distros seem to carry this bug. Then recent SLAX 6 works fine with the default max_sectors. It may have to do with the following change in kernel:
* Add stable release 2.6.21.5: - USB: set the correct Interrupt interval in usb_bulk_msg >From [EMAIL PROTECTED] Mon Apr 23 14:30:35 2007 From: Alan Stern <[EMAIL PROTECTED]> Date: Mon, 23 Apr 2007 17:30:32 -0400 (EDT) Subject: USB: set the correct Interrupt interval in usb_bulk_msg To: Greg Kroah-Hartman <[EMAIL PROTECTED]> Cc: USB development list <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> This patch (as902) fixes a mistake I introduced into usb_bulk_msg(). usb_fill_int_urb() already does the bit-shifting calculation for high-speed Interrupt intervals; it shouldn't be done twice. Signed-off-by: Alan Stern <[EMAIL PROTECTED]> --- drivers/usb/core/message.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -221,15 +221,10 @@ int usb_bulk_msg(struct usb_device *usb_ if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) { - int interval; - - if (usb_dev->speed == USB_SPEED_HIGH) - interval = 1 << min(15, ep->desc.bInterval - 1); - else - interval = ep->desc.bInterval; pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30); usb_fill_int_urb(urb, usb_dev, pipe, data, len, - usb_api_blocking_completion, NULL, interval); + usb_api_blocking_completion, NULL, + ep->desc.bInterval); } else usb_fill_bulk_urb(urb, usb_dev, pipe, data, len, usb_api_blocking_completion, NULL) I'll give it a try with 2.6.20 from Feisty. -- USB mass storage stops working after a while https://bugs.launchpad.net/bugs/61235 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs