Tuesday, August 28, 2012

Kernel hibernate bug

Bah. Got bit by a kernel bug preventing wakeup from hibernation.
3.0.0-12-generic wakes up fine.
3.2.0-30-generic doesn't wake up.
Seeing lots of flurry about various similar kernel bugs. So much activity that I'm not going to add to the confusion by trying to troubleshoot or see if it's already reported or fixed upstream. I'll just stay downgraded for now...

Since Ubuntu doesn't remove old kernels yet, it's easy. Simply remove the newest kernel, and use update-grub to boot from the last (known working) kernel. Then I reboot.

sudo apt-get remove linux-image-3.2.0-30-generic linux-headers-3.2.0-30*
sudo update-grub
sudo shutdown -r now 

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