[Trac #270] USB high speed device is detected as full speed immediately after boot
Zarro Boogs per Child
bugtracker at laptop.org
Fri Nov 3 15:41:18 EST 2006
#270: USB high speed device is detected as full speed immediately after boot
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Reporter: JordanCrouse | Owner: JordanCrouse
Type: defect | Status: new
Priority: blocker | Milestone: BTest-1
Component: hardware | Resolution:
Keywords: |
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Old description:
> Occasionally, a USB high speed device (USB mass storage) will be detected
> as a full-speed device instead. This was detected when OpenFirmware
> failed to find the device in the high-speed list and assumed that no
> drive was present. The behavior in OpenFirmware has since been fixed,
> but the question as to why the device is detected as a full-speed instead
> of high speed is open.
>
> Attaching USB traces of a "bad boot" and a "good boot" for comparison.
New description:
Occasionally, a USB high speed device (USB mass storage) will be detected
as a full-speed device instead. This was detected when OpenFirmware
failed to find the device in the high-speed list and assumed that no drive
was present. The behavior in OpenFirmware has since been fixed, but the
question as to why the device is detected as
a full-speed instead of high speed is open.
URLS of USB traces:
Bad boot: http://dev.laptop.org/~jcrouse/OFW%20Missed%20Flash%20Key.ufo
Good boot: http://dev.laptop.org/~jcrouse/OFW%20Flash%20Key%20OK.ufo
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Ticket URL: <http://dev.laptop.org/ticket/270#comment:1>
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