[SOLVED] Cannot boot (doesn't look like i915 bug)

I can't boot my laptop. Immediately after pressing enter in grub, I see black. I put my laptop to sleep when it had about 10% battery remaining, and I'm guessing that it ran out of juice before I plugged it in.
My last successful boot was just after installing linux 3.16.3-1 on September 21. I booted with archboot and did a chroot. The only "suspicious" packages I upgraded after this boot were xorg-server+common+xephyr and xf86-video-intel. So I downgraded these. No improvement.
I read about the i915 kernel bug and couldn't find any lines mentioning i915_gem_stolen.c in journalctl -r. But I downgraded my kernel to the kernel I had been using for a while, 3.15.5-2. After this, I was happy to see the normal boot messages appearing. However, when the console login appears, I can't input my user name. Rather it disappears and reappears every second. And, interestingly, it writes "Arch Linux 3.16.3-1-ARCH (tty1)" there instead of the kernel version I just downgraded to.
The same behavior (disappearing and reappearing console login) happens when booting in recovery mode.
Which logs do I need to look at in order to figure out what is going on?
Thank you!
Last edited by tinte (2014-09-27 15:41:01)

Try rebooting with iso & doing the chroot thing then try to install the lts kernel & its headers/modules & then check everything.log etc for further clues & reboot after.
The i915 bug has been a weird one with a whole host of different effects for everyone but as you are getting odd behaviour after a kernel downgrade I really would suggest the lts route just to see if that will give you a working system.
good luck

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[SOLVED] Cannot boot (doesn't look like i915 bug)

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