Re: [ovirt-users] USB 2.0 compatibility -- RESOLVED!
I was finally able to resolve this. So that maybe other users can find how to fix this if they run into the same issues: tl;dr: Edit the virtual machine in question, go under Console, make sure SPICE is chosen for graphics, and under "USB Redirection" choose "Native." When you reboot the VM, it will have both UHCI and EHCI (2.0) controllers. Now, any USB 2.0 devices that you attach will work correctly. Long version: I struggled with this for quite a while. While doing some additional research, I found a note in the 4.1.0 release notes referencing BZ 1373223. This particular note was for ppc64 architecture systems, but it curiously said that enabling USB Redirection under SPICE would change the USB controllers available on the host. I dug a little deeper into the bug thread and found a couple of references that seemed to indicate that x86/x86_64 exhibited the same behavior. Apparently, UHCI (1.1) is the default because it supports SmartCards, but the EHCI (2.0) controller does not. So, turning on USB Redirection under SPICE settings for the console enables an EHCI controller, thereby enabling devices that require USB 2.0. Personal opinion: This is really obfuscated. It would be great if this switch lived somewhere more obvious. Even if that doesn't happen, this should exist in a document somewhere. Maybe it does and I couldn't find it, but I tried! jonathan -- Jonathan Woytek http://www.dryrose.com KB3HOZ PGP: 462C 5F50 144D 6B09 3B65 FCE8 C1DC DEC4 E8B6 AABC
On Thu, Feb 9, 2017 at 2:09 AM, Jonathan Woytek <woytek@dryrose.com> wrote:
I was finally able to resolve this. So that maybe other users can find how to fix this if they run into the same issues:
tl;dr: Edit the virtual machine in question, go under Console, make sure SPICE is chosen for graphics, and under "USB Redirection" choose "Native." When you reboot the VM, it will have both UHCI and EHCI (2.0) controllers. Now, any USB 2.0 devices that you attach will work correctly.
Long version: I struggled with this for quite a while. While doing some additional research, I found a note in the 4.1.0 release notes referencing BZ 1373223. This particular note was for ppc64 architecture systems, but it curiously said that enabling USB Redirection under SPICE would change the USB controllers available on the host. I dug a little deeper into the bug thread and found a couple of references that seemed to indicate that x86/x86_64 exhibited the same behavior. Apparently, UHCI (1.1) is the default because it supports SmartCards, but the EHCI (2.0) controller does not. So, turning on USB Redirection under SPICE settings for the console enables an EHCI controller, thereby enabling devices that require USB 2.0.
Thanks a lot for the report!
Personal opinion: This is really obfuscated. It would be great if this switch lived somewhere more obvious. Even if that doesn't happen, this should exist in a document somewhere. Maybe it does and I couldn't find it, but I tried!
Would you like to open an RFE and suggest a new arrangement for the UI, and push a doc update to the website? Best, -- Didi
On Thu, Feb 9, 2017 at 3:24 AM Yedidyah Bar David <didi@redhat.com> wrote:
[...]
Would you like to open an RFE and suggest a new arrangement for the UI, and push a doc update to the website?
I would, but I felt uncomfortable doing that, as I'm still an oVirt newb. I thought perhaps I legitimately missed this somewhere. I'll peruse the doc organization to see where I think this makes sense, and I'll certainly do that and the RFE. Thanks. Jonathan -- Sent from my Commodore64
On Thu, Feb 9, 2017 at 3:15 PM, Jonathan Woytek <woytek@dryrose.com> wrote:
On Thu, Feb 9, 2017 at 3:24 AM Yedidyah Bar David <didi@redhat.com> wrote:
[...]
Would you like to open an RFE and suggest a new arrangement for the UI, and push a doc update to the website?
I would, but I felt uncomfortable doing that, as I'm still an oVirt newb. I thought perhaps I legitimately missed this somewhere. I'll peruse the doc organization to see where I think this makes sense, and I'll certainly do that and the RFE. Thanks.
If the UI is not intuitive enough, we need newbies to tell this - experienced users do not notice anymore... Re docs - IMO best is to make sure that the search terms that people might use when searching for solutions, will return good results. People do not read docs like books. So if you did that and didn't find anything easily, it means we should improve the docs. -- Didi
participants (2)
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Jonathan Woytek -
Yedidyah Bar David