On Fri, 2 Nov 2012 14:43:40 -0700 Jesse Barnes <jbarnes at virtuousgeek.org> wrote: > KMS drivers can potentially restore the display configuration without > userspace help. Such drivers can set a new global, pm_vt_switch, to > false if they support this feature. In that case, the PM layer won't VT > switch to the suspend console at suspend time and then back to the > original VT on resume, but rather leave things alone for a nicer looking > suspend and resume sequence. What if you are multi-head ? What are the locking rules for a suspend/kms module unload race, what happens when you load/unload and hand over multiple frame buffers ? What if you have vts split across two adapters ? Put me down as 100% in favour of the feature but we need to be a bit more careful about the implementation. The logic probably needs to be in the vt layer. I suspect we actually need a per vt flag for this, or a flag on the underlying object below the vt somewhere. So NAK for the implementation ACK for the idea. Alan
