From: Alan Stern <stern@rowland.harvard.edu>
To: Khalid Aziz <khalid.aziz@oracle.com>
Cc: gregkh@linuxfoundation.org, erkka.talvitie@vincit.fi,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC RESEND PATCH 0/1] USB EHCI: repeated resets on full and low speed devices
Date: Tue, 1 Sep 2020 12:36:02 -0400 [thread overview]
Message-ID: <20200901163602.GG587030@rowland.harvard.edu> (raw)
In-Reply-To: <608418fa-b0ce-c2a4-ad79-fe505c842587@oracle.com>
On Tue, Sep 01, 2020 at 09:15:46AM -0700, Khalid Aziz wrote:
> On 8/31/20 8:31 PM, Alan Stern wrote:
> > Can you collect a usbmon trace showing an example of this problem?
> >
>
> I have attached usbmon traces for when USB hub with keyboards and mouse
> is plugged into USB 2.0 port and when it is plugged into the NEC USB 3.0
> port.
The usbmon traces show lots of errors, but no Clear-TT events. The
large number of errors suggests that you've got a hardware problem;
either a bad hub or bad USB connections.
Alan Stern
next prev parent reply other threads:[~2020-09-01 16:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-31 16:23 [RFC RESEND PATCH 0/1] USB EHCI: repeated resets on full and low speed devices Khalid Aziz
2020-08-31 16:23 ` [RFC RESEND PATCH 1/1] usb: ehci: Remove erroneous return of EPROTO upon detection of stall Khalid Aziz
2020-09-04 15:19 ` [RFC " Greg KH
2020-09-04 16:43 ` Khalid Aziz
2020-09-01 2:31 ` [RFC RESEND PATCH 0/1] USB EHCI: repeated resets on full and low speed devices Alan Stern
2020-09-01 15:51 ` Khalid Aziz
2020-09-01 16:18 ` Alan Stern
[not found] ` <608418fa-b0ce-c2a4-ad79-fe505c842587@oracle.com>
2020-09-01 16:36 ` Alan Stern [this message]
2020-09-01 17:00 ` Khalid Aziz
2020-09-01 19:51 ` Alan Stern
2020-09-01 22:54 ` Khalid Aziz
2020-09-02 1:44 ` Alan Stern
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