On 14 November 2014 18:12, Takashi Iwai <tiwai@xxxxxxx> wrote: > Hi Alex, > > we've got a few bug reports about the behavior of radeon driver on > machines with Intel+AMD "switchable graphics" (no Muxless). So far, > it seems that the sane only way to make the machine working is to get > back to the old vgaswitcheroo behavior via radeon.runpm=0. Without > it, radeon GPU gives a spurious output as connected, eventually > crashes GNOME. (Also, from the nature of the switchable graphics, > vgaswitcheroo looks more intuitive to me.) vgaswitcheroo only matters if there is a MUX, the point of it is to drive the MUX. dynamic poweroff makes more sense, switcheroo on/off switch was just a hack. > How are such machines supposed to work with the recent system? Is PX > wrongly detected on them, or something else missing? It sounds like the connector is wrongly detected and that should be what is fixed. Dave. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
