I noticed yesterday, that my kernel wasn't up-to-date, even though I installed updates.
I checked the installed packages and all newer linux-header* packages were installed up to the current 4.2 kernel in Ubuntu 15.10.
I checked my /boot folder and there were no newer kernel images. After seeing that, I removed all but the current kernel which, interestingly, didn't clean up my /boot folder [old kernel images were still there, I deleted them by hand now], then installed the newest kernel, but again with no success.
I also tried to just run apt-get install --reinstall
on the kernel packages, but no dice either.
I checked all logs (dmesg, dpkg, syslog) I could think of but couldn't find any errors or warnings.
So with no further information about what is happening, I hope that someone here can help me figure out what's going on with my system.
History of this system:
Original 14.04, was upgraded to 14.10, then to 15.04, then to 15.10. Kernel updates, apparently, stopped working while Ubuntu 15.04 was installed.
Partitions:
- /boot is a seperate partition. GRUB is installed here (already re-installed it with no change). (SSD)
- /home is a seperate partition. (SSD)
- / is a sperate partition (SSD)
- /var and /tmp are seperate partitions on my second harddrive
SSD is /dev/sdb, harddrive is /dev/sda.