Rockbox

Dear Rockbox, long story short after doing update to the latest daily build c6d5cd7(2017-09-11), after playing music for around 30-40 minutes the screen start to freeze cannot scroll or select anything on the screen even turn it off is not possible but after few seconds it turn off by itself and can be turn on normally after that.

When playing music sometimes crackling sound exist but after 5-6 secs playing it dissappear
i tried to update until the last rockbox firmware (ver.b045e4d date 2016-11-01) the problem still there

but if i boot to mango (stock fw) no crackling sound remains

Device : Ibasso DX90

Previous song and Fast Backward are unable to work

When playing music sometimes crackling sound especially when playing bass

Back button does not work, and sometimes the same function as the forward button.
Rewind button does not work
Of course, I am talking about are the physical buttons，Touch buttons are working properly。