On Sat, Feb 19, 2022 at 05:30:47PM -0500, Frank J. Cameron wrote:
> On Mon, 3 Aug 2020 02:24:47 +1000 Jonathan Gray <[email protected]> wrote:
> > On Sun, Aug 02, 2020 at 01:05:37PM +0200, [email protected] wrote:
> > > System : OpenBSD 6.7
> > > Installing an OpenBSD snapshot the first time on this iMac Intel
> > > Core i3 machine. After the radaeon firmware package has been
> > > installed and you reboot the system, the screen remains black after
> > > the radeondrm driver initializes.
> >
> > Try this. RV730 is DCE3.2
> > - if (dmi_match(DMI_PRODUCT_NAME, "iMac10,1"))
> > + if (dmi_match(DMI_PRODUCT_NAME, "iMac10,1") ||
> > + dmi_match(DMI_PRODUCT_NAME, "iMac11,2"))
>
> OpenBSD 7.0 on an Intel iMac Core i3 (iMac11,2; RV730) had the same black
> screen behaviour, but setting enc_idx to 1 did restore a working screen
> with radeondrm.
>
> I haven't extensively tested the system with the patch but DPMS is
> working and I played some bzflag with high graphics settings; have
> not seen any regressions yet.
That patch also seems to work well on 7.1 snapshot with the drm 5.15.14:
Index: sys/dev/pci/drm/radeon/atombios_encoders.c
===================================================================
RCS file: /cvs/src/sys/dev/pci/drm/radeon/atombios_encoders.c,v
retrieving revision 1.16
diff -u -p -u -p -r1.16 atombios_encoders.c
--- sys/dev/pci/drm/radeon/atombios_encoders.c 14 Jan 2022 06:53:14 -0000
1.16
+++ sys/dev/pci/drm/radeon/atombios_encoders.c 22 Feb 2022 00:32:06 -0000
@@ -2191,7 +2191,8 @@ int radeon_atom_pick_dig_encoder(struct
* otherwise the internal eDP panel will stay dark.
*/
if (ASIC_IS_DCE32(rdev)) {
- if (dmi_match(DMI_PRODUCT_NAME, "iMac10,1"))
+ if (dmi_match(DMI_PRODUCT_NAME, "iMac10,1") ||
+ dmi_match(DMI_PRODUCT_NAME, "iMac11,2"))
enc_idx = (dig->linkb) ? 1 : 0;
else
enc_idx = radeon_crtc->crtc_id;
