Unfortunately, it doesn't. With rehabman 's guide I had to restart twice to make everything work - just as his guide predicted. But now I don't know where to start. What do you mean by correct layout? The Realtek ALC3227 (-CG???) is allegedly rebranded - according to dortania guide. So I tried to figure that out. Drum rolls - it actually is (at least I'm hoping that I'm right) ACL282 (the last three digits of the vendor id gave it away) but not with dortania's "cat /proc/asound/card0/codec#0 | less" command under Linux (Mint) I had to search tonymac in order to find that card1 and codec#0 yields the desired output. So I tried to match that with the "Supported codecs" page and found 0x100003, layout 3, 4, 13, 22, 27, 28, 29, 41, 43, 51, 76, 86, 127 for ALC282. The Dortania guide says that the only thing to be done (big laugh here) is to test each layout number with the boot arg alcid=XX. So I tortured the probook with 13 (!) boots and reboots figuring out that not one of them is enabling audio. Getting so sad here. Please - help. I'm ready and willing to learn but it seems like that audio enemy is too powerful for me.
update: meanwhile I was trying to get file vault working - and it does. But the touchpad doesn't work during the booting process which is quite a nuisance because I cannot set the necessary language without a wired mouse attached (changing the password is not an option - I need to get the touchpad back to work during the booting process).
update2: battery hot-patching is rocket science. I have no idea on how to do that. Let alone microphone and camera.