BadMatch on X_CreateWindow running on xrdp on Rocky 9

[rp42]

This is on a VM with an NVIDIA Titan RTX GPU passed through. The vulkaninfo command works fine on the console, but on an xrdp session it fails:

$ vulkaninfo
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  1 (X_CreateWindow)
  Serial number of failed request:  7
  Current serial number in output stream:  8

We had a simlar issue in one of our applications and traced it to the fact that the default X11 visual is not the first one in the list returned:

xrdp_xdpyinfo.txt

In our app I was able to work around this by searching the list of visuals for the visual returned by DefaultVisual(). Would that be a suitable fix in vulkaninfo?

[charles-lunarg]

Yes, that would be a suitable solution to the problem. I'll happily review & accept a PR which fixes the issue.

[charles-lunarg]

Closing as completed.