Bug 201421

Summary: Sabrent USB 3.0 to SSD // "UAS is blacklisted for this device, using usb-storage instead"
Product: Drivers Reporter: Julian Xhokaxhiu (xhokaxhiujulian)
Component: USBAssignee: Greg Kroah-Hartman (greg)
Status: NEW ---    
Severity: normal    
Priority: P1    
Hardware: x86-64   
OS: Linux   
URL: https://www.sabrent.com/product/EC-SSHD/usb-3-0-ssd-2-5-inch-sata-hard-drive-adapter-optimized-ssd/
Kernel Version: 4.18.12 Subsystem:
Regression: No Bisected commit-id:
Attachments: Sabrent logs collection

Description Julian Xhokaxhiu 2018-10-14 09:38:05 UTC 
Created attachment 279019 [details]
Sabrent logs collection

Hi,

I am trying to use an external SSD drive ( Samsung 850 Pro 256GB ) with Linux in it, and booting it was an external USB drive. The environment itself works totally fine and I got not critical issues using it as a daily driver.

Although sometimes, the system "hangs" very rarely, but in an annoying fashion that makes a bit sluggish the experience.

Initially I thought as I'm using an USB 3.0 adapter, that maybe the UAS driver was buggy, but at my own surprise I found out actually that the UAS driver is not used at all, although the adapter supports it fine.

I am currently using it on a Dell Latitude 7480, and when I use `lsusb` I see that the device is recognized as `JMicron JMS561U` which, by spec, supports UAS ( see http://www.jmicron.com/PDF/brief/jms561u.pdf ).

I am wondering if this device was already tested by anyone of you already, and if not, if I can be a tester for a patch to enable UAS on this adapter.

Thank you very much for the support, as an attachment ( sabrent-uas-logs.md ) you may find all the logs you may need to further help me debugging this.

Best regards,
Julian
Comment 1 Greg Kroah-Hartman 2018-10-14 11:22:49 UTC 
On Sun, Oct 14, 2018 at 09:38:05AM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=201421
> 
>             Bug ID: 201421
>            Summary: Sabrent USB 3.0 to SSD // "UAS is blacklisted for this
>                     device, using usb-storage instead"
>            Product: Drivers
>            Version: 2.5
>     Kernel Version: 4.18.12


All USB bugs should be sent to the linux-usb@vger.kernel.org mailing
list, and not entered into bugzilla.  Please bring this issue up there,
if it is still a problem in the latest kernel release.
Comment 2 Julian Xhokaxhiu 2018-10-14 11:38:31 UTC 
Thank you and sorry, I wasn't aware of that mailing list.

Feel free to close this ticket. I just sent an email to that mailing list.

Best regards,
Julian