There is a thread at the Microsoft Answers web page where a number of Microsoft Surface owners report having the following problem: the tablet's sound output gets muted for no obvious reason. A press of the volume rocker sets the volume back to its previous level, but the mute button gets triggered again sooner or later, either randomly or after the device is turned back on from sleep mode.
Interestingly, it is speculated that the touch cover for the Microsoft Surface might be at the bottom of this as the issue is present only if the accessory is in use. Microsoft representatives have suggested a few solutions, but so far, none of them seem to have helped.
Are any Microsoft Surface owners experiencing such problems? Let us know down in the comments!
source: Microsoft Answers via Neowin