Hello,
I have another variation of the above solution.
In your menu.list file you can add a parameter to turn off autosuspend
globally.
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/hdb2 ro vga=791
usbcore.autosuspend=-1
This in fact is the same as above, but you don't have to change each
device. The above approach is great if its just a few devices.
I stumbled upon this about 1 year ago with a Samsung ML-2010 that would
only print a few pages and stop. I couldn't figure it out. After some
snooping, I found it was because the Samsung printer driver (which
included a Linux CD, Kudos to you Samsung) didn't turn off autosuspend.
I notified Samsung to have their Linux team add the printer to the
blacklist but I guess it never happened.
As a result, I can print fine and my devices are working.
I started to look for the same error again with the 2.6.26 kernel from
Debian and stumbled upon this post. Just thought I'd share some
knowledge.
But a question:
Is usb storage broken in the 2.6.26 kernel now?
I've been getting some strange errors
Oct 2 16:41:37 mepis1 kernel: [10725.578559] sd 13:0:0:0: [sda] Attached SCSI
disk
Oct 2 16:42:26 mepis1 kernel: [10778.689115] usb 9-4: reset high speed USB
device using ehci_hcd and address 14
Oct 2 16:42:27 mepis1 kernel: [10779.523824] usb 9-4: reset high speed USB
device using ehci_hcd and address 14
Oct 2 16:42:27 mepis1 kernel: [10779.675803] usb 9-4: device firmware changed
Oct 2 16:42:27 mepis1 kernel: [10779.675803] usb 9-4: USB disconnect, address
14
Oct 2 16:42:27 mepis1 kernel: [10779.675803] sd 13:0:0:0: [sda] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.675803] __ratelimit: 254086 messages
suppressed
Oct 2 16:42:27 mepis1 kernel: [10779.675803] lost page write due to I/O error
on sda1
Oct 2 16:42:27 mepis1 last message repeated 9 times
Oct 2 16:42:27 mepis1 kernel: [10779.675803] sd 13:0:0:0: [sda] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 last message repeated 8 times
Oct 2 16:42:27 mepis1 kernel: [10779.675866] sd 13:0:0:0: [sda] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.676182] sd 13:0:0:0: [sda] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.679806] sd 13:0:0:0: [sda] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 last message repeated 10 times
Oct 2 16:42:27 mepis1 kernel: [10779.680300] sd 13:0:0:0: [sda] Result:
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.699905] sd 13:0:0:0: [sda] Result:
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.778083] usb 9-2: reset high speed USB
device using ehci_hcd and address 13
Oct 2 16:42:27 mepis1 kernel: [10779.836350] sd 12:0:0:3: [sde] READ CAPACITY
failed
Oct 2 16:42:27 mepis1 kernel: [10779.836350] sd 12:0:0:3: [sde] Result:
hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
Oct 2 16:42:27 mepis1 kernel: [10779.836350] sd 12:0:0:3: [sde] Sense not
available.
Oct 2 16:42:27 mepis1 kernel: [10779.836835] sd 12:0:0:1: [sdc] READ CAPACITY
failed
Wondering if the device could be bad.
Good Luck,
btanoue
--
ehci_hcd module causes I/O errors in USB 2.0 devices
https://bugs.launchpad.net/bugs/88746
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