Deb-fan wrote:4.9 custom compiled from source from the fine folks over at kernel.org. Still don't know a millionth of what da heck I'm doing w the kernel but enough to compile one of the suckers that runs pretty good on Debian Jessie.
At least nothing has caught on fire in the last couple months, 4.8bpo as backup.
I never compiled a kernel, I go to ubuntu's ftp and install them (dpkg -i *.deb

), they work well in my experience, and i've installed around 20 or 30 differents versions.
Ive tested several versions, and i cant improve 4.4.39 for my AcerExtensa 5230. So i gave it up, and stay in this version kernel until computer dies.