Re: Dual external monitors not working since drm 5.10.47 upgrade

On Wed, Sep 07, 2022 at 05:29:14PM +0200, Paul Kelly wrote:
> On 9/7/22 13:05, Jonathan Gray wrote:
> > If you add "option DRMDEBUG" to your kernel config
> > there may be some hints in the (large amount of) dmesg output
> >
> > Also build with this to add some more DP messages.
> > Used in sys/dev/pci/drm/drm_dp_mst_topology.c
> >
> > Index: sys/dev/pci/drm/drm_print.c
> > ===================================================================
> > RCS file: /cvs/src/sys/dev/pci/drm/drm_print.c,v
> > retrieving revision 1.4
> > diff -u -p -r1.4 drm_print.c
> > --- sys/dev/pci/drm/drm_print.c 12 Jun 2020 10:06:40 -0000 1.4
> > +++ sys/dev/pci/drm/drm_print.c 7 Sep 2022 10:38:00 -0000
> > @@ -43,7 +43,7 @@
> > * Bitmask of DRM_UT_x. See include/drm/drm_print.h for details.
> > */
> > #ifdef DRMDEBUG
> > -unsigned int __drm_debug = DRM_UT_DRIVER | DRM_UT_KMS;
> > +unsigned int __drm_debug = DRM_UT_DRIVER | DRM_UT_KMS | DRM_UT_DP;
> > #else
> > unsigned int __drm_debug;
> >