Given the experimental nature of this rom, I think it's more helpful if it's tested in a clean state, by this I mean full-wipe and install, also, nothing extra installed beyond what's already in the rom except perhaps gapps. If there are leftover files (specially apk files), settings, blobs, whatever on the system before installing the rom it's quite possible to have bugs that are not really part of the original rom/kernel. The same applies for changing settings like CPU clock, compcache, governor, etc... make tests on the rom as it comes by default, if everything is good then setting A and B can be changed and if a problem arose from such change then is easier to backtrace the bug since only those A and B settings were applied before a particular error.
In my case this is what I do for every test I try:
Reboot into recovery.
Backup my current working rom (nandroid).
Factory reset/Data wipe.
Mounts and storage -> format /boot and format /system
Advanced -> wipe dalvik
Install from zip -> chose zip from sdcard -> install rom.
From here on is all tests... first touchscreen (pretty obvious xD), verify scrolling functionallity going from desk 3 to desk 1 to desk 5, then activate wifi and connect to my router, navigate web pages and close, then activate bluetooth and search for devices I know it should report, deactivate gps, reboot, install gapps, install google maps, activate gps, test apps like location, maps, etc... to verify gps status, open up dial, type numbers from 1 to 0, * and # type in and call to the number of other phone I have, check speaker sound, deactivate wifi and verify ril operation by connecting to google maps and web pages with edge and 3g, open up camera, take foto, return to camera and change to video recording mode, record video and close, open up android terminal and type every key, number and symbol, first in portrait mode and then in landscape, change screen brightness, verify accelerometer sensor and rotation animations, change wallpapers from cyanogenmod to live wallpapers, open up music app and play a song, verify sound up and down buttons, close long press power and reboot recovery.
full wipe again, and restore my previous rom. done.
From latest mike's rom the only error I had was magicsmoke which fc everytime.
Also, in case of hardware errors (wifi can't be enable, which is different to wifi not connecting, accelerometer not working, speaker issues, camera, etc...) it'll be useful if dmesg is provided, similar to what mike said about logcat, from terminal emulator just run: dmesg > /sdcard/dmesg.txt and send that when you're able.