I recently upgraded from 18 to 20 on my Asus Eee PC 1015PX using fedup, and although it appears to have been mostly successful, the speakers and some of the function keys have stopped working. I'm not sure what information is needed but this should get the ball rolling.
Below is a list of the function keys, what they should do, and if they work for me:
F1: sleep, working
F2: wifi toggle, working (or at least, turns airplane mode on/off)
F3: supposed to do something with the aspect ratio? not working
F4: supposed to do something with the screen resolution? not working
F5: screen brightness decrease, working in MATE, not in GNOME
F6: screen brightness increase, working
F7: turn display off, not working
F8: clone/span display mode toggle, working in MATE, not in GNOME, and always triggers a crash notification
F9: process viewer? not working
F10: sound off, seems to work
F11: sound volume decrease, seems to work
F12: sound volume increase, seems to work
Not all of these worked in 18 either! But I'm pretty sure F1, F2, F5-F8, and F10-12 did.
F8 is an interesting one, as in MATE it does switch correctly between cloned and spanning views, but with a "kernel crashed" warning every time (in drivers/gpu/drm/i915/intel_display.c). It used to do this more reliably (but still with the odd panic!).
I did find this http://fedoraproject.org/wiki/Eee_PC
but it hasn't been updated in some years. Typing
as suggested tells me I have
In terms of audio devices, in MATE I can see "HDA Intel (Alsa mixer)" and "Playback: Built-in Audio Analog Stero (PulseAudio Mixer)".
Looking forward to advice.