After installing the current kernel, I noticed that the processor became very hot when idle launched top 214 root 0 -20 0 0 0 R 48.8 0.0 1:46.14 kworker/u13:0-brcmf_wq/mmc0:0001:1 cat /proc/214/status Name: kworker/u13:0+brcmf_wq/mmc0:0001:1 Umask: 0000 State: D (disk sleep) Tgid: 214 Ngid: 0 Pid: 214 PPid: 2 TracerPid: 0 Uid: 0 0 0 0 Gid: 0 0 0 0 FDSize: 64 Groups: NStgid: 214 NSpid: 214 NSpgid: 0 NSsid: 0 Threads: 1 SigQ: 0/14866 SigPnd: 0000000000000000 ShdPnd