Comment 484 for bug 88746

Hello,

i am also affected by this bug...

my mainboard is an asus m3a78-t: amd 790gx chipset, amd sb750 southbridge.

i don't know if it may help anyone, but atleast for me, i can reproduce the usb "reset"
bug very easily with running an md5sum against my usb2.0 storage devices...
(sudo md5sum /dev/sdX)

wich, in my case, will trigger usb resets quite fast.

i can reproduce this behavior with two of my usb 2.0 hdds, one western digital mybook
(2.5" 250gb) and one seagate freeagent (3.5" 500gb).

fyi, i tried the following "fixes", but usb2.0 is still exhibiting the "reset" bug:
- kernel 2.6.27-11 from intrepid-proposed
- ensuring that ehci_hcd is loaded before ohci_hcd/uhci_hdc
- disabling usb autosuspend as recommended in comment #209

so when i run md5sum against my wd mybook or seagate freeagent, it's at some point
starting to reset:
[ 3373.785540] usb 3-5: reset high speed USB device using ehci_hcd and address 4
[ 3388.896040] usb 3-5: device descriptor read/64, error -110
[ 3404.112046] usb 3-5: device descriptor read/64, error -110
[ 3404.328024] usb 3-5: reset high speed USB device using ehci_hcd and address 4
[ 3419.440041] usb 3-5: device descriptor read/64, error -110
[ 3434.656037] usb 3-5: device descriptor read/64, error -110
[ 3434.873731] usb 3-5: reset high speed USB device using ehci_hcd and address 4
[ 3445.280030] usb 3-5: device not accepting address 4, error -110
[ 3445.392051] usb 3-5: reset high speed USB device using ehci_hcd and address 4
[ 3455.801525] usb 3-5: device not accepting address 4, error -110
...