https://bugs.freedesktop.org/show_bug.cgi?id=97460
--- Comment #1 from Shawn Starr shawn.starr@rogers.com --- Adding some debug when not using Switchable Graphics:
[ 10.048669] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e [ 10.048672] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: 7 [ 10.048684] [drm] forcing LVDS-1 connector OFF [ 10.048721] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20 [ 10.048724] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: 10 [ 10.048811] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x20 [ 10.048814] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: 10 [ 10.048877] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x21 [ 10.048880] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: 10 [ 10.048933] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x15 [ 10.048937] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: 1
When using Switchable Graphics:
[ X.XXXXXXX] [drm] amdgpu_connector_add(): dp bridge encoder name: 0x1e [ X.XXXXXXX] [drm] amdgpu_connector_add() no dp_bridge: connecter_type found: -16345243
Then we panic/deadlock.
amdgpu_atombios_get_connector_info_from_object_table() vs radeon_get_atom_connector_info_from_object_table()
Perhaps there's a bug in the parsing? This works fine with radeon.ko.