Landry Breuil wrote:
Le Tue, Jul 28, 2026 at 04:17:14PM +0800, Chris Billington a écrit :
Chris Billington wrote:
I noticed on a machine with Intel Graphics running 8.0-current with the
Xfce desktop that the xorg vulkan driver does not get loaded by
graphics/vulkan-loader. 'vulkaninfo' from vulkan-tools returns an error.

This is because /usr/local/bin/startxfce4 (which is installed by the
xfce4-session package) checks for the environment variable
XDG_DATA_DIRS, which is used by vulkan-loader to define the search paths
for the driver/loader json definitions.

If it is not previously defined, XDG_DATA_DIRS is set to

    XDG_DATA_DIRS=/usr/share:/usr/local/share

and the files from the xbase80 set in /usr/X11R6/share/vulkan/icd.d are
therefore not found.

Rather than patching xfce4-session, a 'fix' might be to add

    export XDG_DATA_DIRS=/usr/X11R6/share:/usr/share:/usr/local/share

to ~/.xsession

A note to this effect could be added to the pkg-readme/xfce file in
meta/xfce

As well as the 'vulkan ports', I believe this is relevant for Chromium
and friends if so configured.

Regards
Chris Billington

A suggested diff for the above:

thanks for that diff, though it's a bit cumbersome to have to follow
such instructions, i'll probably see about upstreaming a fix to
startxfce4 instead (and backport it as patch).

That would be better. No doubt other BSDs which have Xorg in /usr/X11R6 have the same issue.

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