2bad, amazing works, been hoping for years for this!
Depressingly, only got Dolby Digital Live working for a few minutes with the R2.71-M3x64 (not that the .dll version matters) and a few months old motherboard driver (possibly based on pre-R2.71, though again version should not and does not matter) with the onboard Realtek ALC1150, verified using Splinter Cell Blacklist Audio Setup (here these original drivers were running as regular since boot and the .dll was replaced - with the original backed up - on the fly, i.e. during operation, as such the original .dll was not fully loaded because if it were actively being used one can not replace it with the 2bad unlocked, though perhaps the original was loaded in such a perfect storm that it accepted the unlocked replacement's Dolby Digital Live modifications this one time)...until reboot, at which point it immediately failed miserably, in Windows Sound forever throwing up "Failed to play test tone." with the Default Format Test as well as the occasional "Format not supported by the device." when trying to Apply "Dolby Digital Live (5.1 Surround)" as Default Format (these errors occasionally not displaying is more likely a visual bug in Sound error prompting by Windows than anything related). Also occasionally getting the Driver Enhancements warning, choosing Yes or No on this disabling prompt makes absolutely no difference.
Tried about fifteen times to get it working once more using the exact same drivers with the .dll replaced after full setup - naturally always completely uninstalling first, the Realtek setup forces one to do so - as well as other times by preplacing the unlocked .dll in the setup folder, using these two methods with the stock Realtek R2.71 driver, newer motherboard drivers and stock Realtek R2.72 driver with the R2.72-M1 unlocked .dll, both on Windows 8x64 and fresh install of Windows 8.1x64. To sum it up, literally tried every combination possible, no dice, always those same errors and no sound - in fact, sound locks up as such that for instance Winamp noticeably is unable to even play any sound files visually represented by no little equalizer bars dancing like usual, Windows Media Player throws up errors immediately as well. Even tried (hex-)modifying the exact .dll included with the motherboard drivers, same dreadful results. Thusly, either the ALC1150 is rarely unsupported even though OEMs have the option to activate Dolby Digital Live through licensing same as the already activated DTS, so the chipset most definitely supports it (Splinter Cell Blacklist confirmed this the one time, as did it confirm the speakers or hardware audio outputs not being the issue).
Could anyone please help, very desperate here, in fact all the reports of consistently working for members here, though absolutely fantastic for them, seem incredible to the point of impossible in comparison with the woes of this particular ALC1150-based setup?
All your thoughts are appreciated, regardless of not being able to think of anything which could be the culprit here after having tested apparently everything multiple times.