MacBook Pro 2009 won't go to sleep when lid is closed My macbook pro 2009 stopped hibernating after closing the lid, also keyboard back light seems stopped working as well, I tried LabTick but no luck.

Assertion status system-wide:
   BackgroundTask                 0
   ApplePushServiceTask           0
   UserIsActive                   1
   PreventUserIdleDisplaySleep    0
   PreventSystemSleep             0
   ExternalMedia                  0
   PreventUserIdleSystemSleep     1
   NetworkClientActive            0
Listed by owning process:
pid 139(coreaudiod): [0x0000008f000101e7] 00:09:05 PreventUserIdleSystemSleep named: "com.apple.audio.Boom2Engine:0.context.preventuseridlesleep" 
    Created for PID: 348. 
   pid 98(hidd): [0x0000004900090168] 00:10:15 UserIsActive named: "com.apple.iohideventsystem.queue.tickle" 
    Timeout will fire in 109 secs Action=TimeoutActionRelease
No kernel assertions.
Idle sleep preventers: IODisplayWrangler
Looks like that well-known Mac-borker.. Boom2

com.apple.audio.Boom2Engine:0.context.preventuseridlesleep

Uninstall it [your speakers will last longer] or see if there's an update that fixes the issue.