https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278363
Bug ID: 278363
Summary: linsysfs: /sys/class/drm and /sys/dev/char/226:*
contents don't match /dev/dri
Product: Base System
Version: Unspecified
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
There are two significant issues here:
1. linsysfs creates entries for everything that has vgapci attached to it,
regardless of whether the GPU has any associated /dev/dri/card* nodes — this
might (and occasionally does) result in Mesa's libGL picking the wrong driver
in multi-GPU configurations;
2. there are no entries for /dev/dri/renderD* nodes, which breaks Vulkan
initialization, forcing Mesa to choose the software rendering fallback.
(See https://github.com/freebsd/drm-kmod/issues/290 and
https://forums.freebsd.org/threads/linuxulator-vs-intel-amd-gpus.92445/ for
context.)
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