What does a hard freeze with blinking caps lock and scroll lock leds mean?
Every now and then, seemingly completely at random, Ubuntu completely freezes on me. I don't know if it is hardware or what because it's too random (and last I checked my hardware passed stability tests) and because when it freezes it will not respond to mouse or keypresses, so I can't even as much as get to a console... Since I'm on a laptop with no hidden resseses for tiny reset buttons that I could locate so far, the only solution for me has been to pull the power cord (no battery.) It won't even respond if I hold the power button for > 4 seconds... Twice now these hard freezes have become bad enough to force me to reinstall as the filesystem became too currupted to boot again. I've since resorted to keeping almost nightly images of the partiton so I won't have to reinstall anymore.
I think the problem has been specific to 7.04 final for me. I've tried so many things that I admit that I'm loosing track, but I think the beta I tried before I realized that the "stable" version is out did not have any problems other than software for me.
Every single time it does this, I can see two LEDs blinking -- the caps lock and scroll lock. I can only assume that this must be intentional and maybe has some meaning that might help lead me to figuring out just what is causing this. Does it mean anything other than "system has crashed"?
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- Jörn Dreyer
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