Ubuntu
linux-fsl-imx51 package

data integrity errors and usb resets

Bug #562606 reported by Paul Larson
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
linux-fsl-imx51 (Ubuntu)
Invalid
High
Bryan Wu
Karmic
Won't Fix
High
Bryan Wu
Lucid
Won't Fix
High
Bryan Wu

Bug Description

On imx51, I'm running a command like:
spew -P -p random -i 0 -l spewlog.log --raw 300m spewfile

The device I am running this on is a 16G USB stick, formatted ext4.

Part way through the read test, it stops with this error:
Data integrity errors in ~512 byte(s) found during
transfer 372664 at file offset(s):
 190803968 - 190804479
More data integrity errors may exist in other parts of the file.
error: One or more data integrity or I/O errors were encountered during data
transfers. Descriptions of these errors can be found in the logfile
spewlog.pwl.

Also, in dmesg, I see a lot of errors just like this:
usb 1-1.2: reset high speed USB device using fsl-ehci and address 6

Tags: armel
Revision history for this message
Paul Larson (pwlars) wrote :

Attaching logfile from spew

Changed in linux-fsl-imx51 (Ubuntu):
assignee: nobody → Bryan Wu (cooloney)
importance: Undecided → High
tags: added: armel
Revision history for this message
Paul Larson (pwlars) wrote :

possibly related to bug #523293 ?

Revision history for this message
Paul Larson (pwlars) wrote :

Using the same USB stick, I have also tried this on dove and x86_64, so far unable to reproduce anywhere else.

Revision history for this message
dendril (cabrerafacundo) wrote :

I sum a vote for this bug.

I have problems with USB 2.0 controller and devices that are not 2.0 capable.

My solution was disable USB 2.0 controller from the BIOS and sacrifice performance.

Could be possible to recompile the kernel with ehci support as module and play a little with udev to fix this bug?

Please, check this http://moserei.de/index.php/tag/disable-ehci

Cheers!

Revision history for this message
Steve Langasek (vorlon) wrote :

Package only present in karmic and lucid. Is this still on the todo list?

Changed in linux-fsl-imx51 (Ubuntu Lucid):
importance: Undecided → High
Changed in linux-fsl-imx51 (Ubuntu Karmic):
importance: Undecided → High
Changed in linux-fsl-imx51 (Ubuntu):
status: New → Invalid
Changed in linux-fsl-imx51 (Ubuntu Karmic):
assignee: nobody → Bryan Wu (cooloney)
Changed in linux-fsl-imx51 (Ubuntu Lucid):
assignee: nobody → Bryan Wu (cooloney)
Rolf Leggewie (r0lf)
Changed in linux-fsl-imx51 (Ubuntu Karmic):
status: New → Won't Fix
Tobin Davis (gruemaster)
Changed in linux-fsl-imx51 (Ubuntu Lucid):
status: New → Won't Fix
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