I had been running 10.10 fine on my Envy 14 until this morning. Now, when I try to log in, the screen returns to tty1 and I get a bunch of "stimulus stuck in loop" messages, and then gdm restarts. (This holds whether I tried to use gnome, IDE, or the recovery console.) I tried booting the kernel in recovery mode, but after the boot messages, I'm left with a totally black screen. I've even tried older kernels, left from previous upgrades.
I tried manually switching to the discrete graphics from the command line, but that had no effect.
When I last used my computer, I had no new upgrades. (I think I last upgraded on Thursday, and nothing new was available on last I checked.) I had the computer on last night, and left it to suspend, but oddly this morning, the monitor was off, but the power light was on, implying only the screen shut off.
Any ideas how to approach fixing this?
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