svn commit: r367328 - head/share/man/man4

[Emmanuel Vadot]

Author: manu
Date: Wed Nov  4 13:43:34 2020
New Revision: 367328
URL: https://svnweb.freebsd.org/changeset/base/367328

Log:
  acpi_video(4): mention that acpi_video should be loaded after any drm driver
  
  When not adhering to this order, brightness sysctl's do not show up on some
  laptop.
  
  Submitted by:	 driesm.michiels at gmail.com
  Reviewed by:	uqs
  Differential Revision:	https://reviews.freebsd.org/D26073

Modified:
  head/share/man/man4/acpi_video.4

Modified: head/share/man/man4/acpi_video.4
==============================================================================
--- head/share/man/man4/acpi_video.4	Wed Nov  4 12:11:50 2020	(r367327)
+++ head/share/man/man4/acpi_video.4	Wed Nov  4 13:43:34 2020	(r367328)
@@ -63,6 +63,15 @@ Preset brightness level to be used in economy mode.
 Defaults for these variables can be set in
 .Xr sysctl.conf 5 ,
 which is parsed at boot-time.
+.Sh COMPATIBILITY
+In order for
+.Nm
+to attach correctly,
+.Nm
+should be loaded after any of the DRM kernel modules.
+This can be achieved by setting the correct order in
+.Xr rc.conf 5
+using the kld_list directive.
 .Sh SEE ALSO
 .Xr acpi 4 ,
 .Xr loader.conf 5 ,