Comment 2 for bug 1081613

disabling all the drm renderers besides the dumb ioctl one is probably the best way to go, it should be using the generic one. Also --disable-libkms would be useful, the dumb version that was backported in quantal supersedes it and its just a useless dependency. Note: nothing actually used libkms in plymouth.

see http://cgit.freedesktop.org/plymouth/commit/?id=8e932e9895bacf9b490e60e4be63d8902201e5d5 for the rationale of disabling the device specific drm drivers and http://cgit.freedesktop.org/plymouth/commit/?id=527400dc5a9da4cd3ef8a831e7309e1627d6b3b0 for info on the generic driver.