Ubuntu

USB Drive Dismount - CATC Snapshot

Bug #628282 reported by Arun Ramiya
10
This bug affects 2 people
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Ubuntu
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Bug Description

USB drive dismounts during data transfer. This issue show up only with specific Laptops and Desktop running latest Ubuntu 10.04 LTS Kernel 2.6xx. Ran full OS update from update manager, still the issue show up.

Laptop Info: DELL Latitude D810
Desktop Info: HP DC5700

Herewith I have attached the CATC snapshot showing dismount. Please see Ubuntu host doesn't initiate a IN packet after #2472388.

Arun

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Arun Ramiya (arunprasadrm) wrote :
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Arun Ramiya (arunprasadrm) wrote :

Attachment is in .JPG format.

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Arun Ramiya (arunprasadrm) wrote :

With SOF & NAK Enabled.

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Arun Ramiya (arunprasadrm) wrote :

As per USB Bulk-Only MassStorage Protocol, HOST should have issued an IN packet for 13byte CSW status phase. It never issued an IN packet.

Brian Murray (brian-murray)
tags: added: patch
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Arun Ramiya (arunprasadrm) wrote :

Works OK with Ubuntu 9.10 (Karmic Koala). Could do IO tests for 120+ hrs without a dismount.

After 3hrs, drive dismounts with Ubuntu 10.04.1 LTS (Lucid Lynx)

After 3hrs, drive dismounts with Ubuntu 10.10 Beta (Maverick Meerkat)

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Arun Ramiya (arunprasadrm) wrote :

Brian, is this a known issue? Let me know if you need more details. Thanks.

Arun

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Steve (se-george) wrote :

Any news on this bug? It's causing real problems with backups to external USB drives.

Steve

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