Why doesn't Wireshark trace USB string descriptors?
If I trace a USB enumeration I only get traces of host retrieving device and config desciptors, but not of the string desciptor retrievals (which I can see if I attach a USB bus analyser). How come?
Which operating system?
Windows 7 Pro SP1
Presumably you're using USBPcap to capture the USB traffic, so in this case I think this is an issue with USBPcap itself not Wireshark.
To be sure, you would have to capture using
USBPcapCMD.exedirectly into a file (in order to exclude Wireshark from the chain completely) and analyse the file using something else than Wireshark, to see whether the frames are there but Wireshark cannot see them or whether USBPcap has not saved them.You can also publish the file, login-free, at any file sharing service and edit your Question with a link to it to let the community have a look. If doing so, it would be fine to paste a cut from the frame list from the external analyzer which would contain the frames missing in the capture plus at least one before and at least one after them, ideally with timestamps.