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Hi John,<br>
<br>
you have to use an extension pack suitable for 6.1.97, which you can
(usually) get from <a class="moz-txt-link-freetext" href="https://www.virtualbox.org/wiki/Testbuilds">https://www.virtualbox.org/wiki/Testbuilds</a> - from
the "Development snapshots" section. The 6.1.26 extension pack will
not work with what will eventually be the next major/minor
VirtualBox version. Too many big changes.<br>
<br>
Klaus<br>
<br>
<div class="moz-cite-prefix">On 2021-09-20 19:32, John Lumby wrote:<br>
</div>
<blockquote type="cite" cite="mid:YTOPR0101MB1897648BB01904F4329789ECD5A09@YTOPR0101MB1897.CANPRD01.PROD.OUTLOOK.COM">
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
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I am running linux-5.14.3 and build VirtualBox from source (in
order to get the VNC server).</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
I hit known problems building from 6.1.26 source and so tried
svn checkout of current revision 91035.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Build went perfectly including kernel modules.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
I then installed the latest 6.1.26 ExtensionPack.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
However startvm of any VM fails with this</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Oracle VM VirtualBox Headless Interface 6.1.97
<div>(C) 2008-2021 Oracle Corporation</div>
<div>All rights reserved.</div>
<div><br>
</div>
<div>Starting virtual machine: </div>
<div>Operation failed: NS_ERROR_FAILURE</div>
Error: failed to start machine. Error message: Failed to
construct device 'usb-ehci' instance #0
(VERR_PDM_DEVHLP_VERSION_MISMATCH)<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
Is there any way to get an ExtensionPack corresponding to <span style="background-color:rgb(255, 255, 255);display:inline
!important">revision 91035? I don't see that mentioned in
the wiki anywhere.</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important"><br>
</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important">Alternatively is there some code change I can make
to the <span style="background-color:rgb(255, 255,
255);display:inline !important">revision 91035 build that
makes it compatible with ExtensionPack-6.1.26?</span></span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important"><span style="background-color:rgb(255, 255,
255);display:inline !important"><br>
</span></span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important"><span style="background-color:rgb(255, 255,
255);display:inline !important">Or must I lose USB-2?</span></span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important"><span style="background-color:rgb(255, 255,
255);display:inline !important"><br>
</span></span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<span style="background-color:rgb(255, 255, 255);display:inline
!important"><span style="background-color:rgb(255, 255,
255);display:inline !important">Cheers, John Lumby</span></span></div>
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