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List: vbox-dev
Subject: Re: [vbox-dev] Troubleshooting a USB capture issue with multiple devices.
From: Ribhi Kamal <rbhkamal () gmail ! com>
Date: 2013-10-14 17:52:11
Message-ID: CACkSh6wW57PvQ61U4Un1FaFGV62sqXfEG=nke+X978Ed=AryiA () mail ! gmail ! com
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Thanks Klaus,
My answers below.
It has been a while since I did this test. At that time, I was going
through the code of vboxsvc and it was starting to look like a locking
issue (for all operating systems). Since then a lot of the USB code/locking
seem to have been moved around or reworked. I was hoping that it solved the
problem.
Obviously I'll have to do everything all over again... that's what I get
for not keeping notes :(
-- Ribhi
On Mon, Oct 14, 2013 at 12:52 PM, Klaus Espenlaub <
klaus.espenlaub@oracle.com> wrote:
> Hi Ribhi,
>
> On 14.10.2013 17:46, Ribhi Kamal wrote:
> > I'm trying to troubleshoot a problem with vbox 4.2.16 (windows 7 host)
> > where virtualbox is unable to capture multiple devices when a virtual
> > machine is starting up.
> >
> > In my testing, I'm only trying to attached USB SC readers (I have about
> > 4 different vendors).
>
> I assume that the USB SC readers are USB 1.1 (or at most 2.0) devices.
> Correct?
>
Correct All SC readers are USB V1 or 2.
> Are you plugging any of them by chance into a "USB3 port" (in quotes, as
> this term is ambiguous, I mean a USB port connected to a USB3/xHCI
> controller)?
>
And my test environment does not have any USB 3.0 controllers nor devices.
>
>
> All USB ports are alike? Or is there a pattern?
>
> To the best of my ability, all the USB ports were active and all power
management functions are disabled in Windows. But I believe the devices
them self have some kind of power management.. not sure I can turn that
off. I will troubleshoot this further.
[Attachment #5 (text/html)]
<div dir="ltr"><div><div>Thanks Klaus,<br></div>My answers below.<br><br>It has been \
a while since I did this test. At that time, I was going through the code of vboxsvc \
and it was starting to look like a locking issue (for all operating systems). Since \
then a lot of the USB code/locking seem to have been moved around or reworked. I was \
hoping that it solved the problem.<br>
<br></div>Obviously I'll have to do everything all over again... that's what \
I get for not keeping notes :(<br><div><div><div><br></div><div><div \
class="gmail_extra"><br clear="all"><div>-- Ribhi</div> <br><br><div \
class="gmail_quote">On Mon, Oct 14, 2013 at 12:52 PM, Klaus Espenlaub <span \
dir="ltr"><<a href="mailto:klaus.espenlaub@oracle.com" \
target="_blank">klaus.espenlaub@oracle.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">
Hi Ribhi,<br>
<div class="im"><br>
On 14.10.2013 17:46, Ribhi Kamal wrote:<br>
> I'm trying to troubleshoot a problem with vbox 4.2.16 (windows 7 host)<br>
> where virtualbox is unable to capture multiple devices when a virtual<br>
> machine is starting up.<br>
><br>
> In my testing, I'm only trying to attached USB SC readers (I have about<br>
> 4 different vendors).<br>
<br>
</div>I assume that the USB SC readers are USB 1.1 (or at most 2.0) devices.<br>
Correct?<br></blockquote><div> </div><div><span style="color:rgb(0,0,255)">Correct \
All SC readers are USB V1 or 2.</span><br><br></div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">
<br>
Are you plugging any of them by chance into a "USB3 port" (in quotes, \
as<br> this term is ambiguous, I mean a USB port connected to a USB3/xHCI<br>
controller)?<br></blockquote><div><br>And my test environment does not have any USB \
3.0 controllers nor devices. <br></div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">
<div class="im"><br>
<br>
</div>All USB ports are alike? Or is there a pattern?<br>
<div class="im"><br></div></blockquote><div><span style="color:rgb(0,0,255)">To the \
best of my ability, all the USB ports were active and all power management functions \
are disabled in Windows. But I believe the devices them self have some kind of power \
management.. not sure I can turn that off. I will troubleshoot this \
further.</span><br>
<br></div></div><br></div></div></div></div></div>
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