When setting things for sleep I had it set for 2yrs. without any problems seen with the desktop install. In some enviironments when first coming out of sleep or hibernation even you may elect to simply see a full system restart to insure everything is loaded up fresh again including device drivers
that may not awaken like they should.
Often this will cause sound or even video driver
problems to come up where the system runs normally once a full restart is seen to. First let's see how things go once you roll things back a bit there.