I've been running an "updated" MDM here since last night and I haven't experienced a single boot with llvmpipe.. of course, it's hard to say for sure since the problem didn't happen all the time in the first place, but it looks good. Basically, the fix consists in mdm checking if plymouth is running and asking it to quit.
We'll do a bit more testing and hopefully we'll have a package update for MDM very soon.







