Re: [Bugme-new] [Bug 8432] New: USB device keeps reseting while using ehci_hcd

On Sat, 5 May 2007 11:25:50 -0700 [email protected] wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=8432
> 
>            Summary: USB device keeps reseting while using ehci_hcd
>     Kernel Version: 2.6.20
>             Status: NEW
>           Severity: high
>              Owner: [email protected]
>          Submitter: [email protected]
> 
> 
> Most recent kernel where this bug did *NOT* occur: 2.6.19.7
> Distribution:Arch
> Hardware Environment:Asus G1 laptop
> Software Environment:
> Problem Description:When I use 2.6.20 kernel my dmesg show that about every
> second there is new message generated:
> "usb 5-7: reset high speed USB device using ehci_hcd and address 6"
> This device is (probably) small OLED display in ma laptop, which is not
> supported anyway. When I used 2.6.19.7 (vanilla) it didn't produce such
> warnings. With 2.6.20 (vanilla) it does. Also, my USB keyboard behaves in a
> strange way - when I keep one key pressed it repeats it few times, then it
> pauses for a while, repeats the key again, pauses and so on. Sometimes it also
> produces extra characters - for example 'modproooobee' instead of 'modprobe'.
> When I do modprobe -r ehci_hcd, my keyboard stops responding, and starts working
> again after a while, the OLED device is detected by lsusb command, but it stops
> producing this warning.
> 2.6.21 version has exactly the same issue.
> 
> Steps to reproduce: Boot the laptop with 2.6.20 or 2.6.21 kernel.

A regression.

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