Several days ago I installed Linux Mint 18.2 Cinamon "Sonya", everything works great and it's very fast! :)
But when I pressed the turn off button, it took over two minutes from pc to turn off. While it was "turning off" I got this messages:
[ 947.438205 ] ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 9407.438770] ata8.00: failed command: STANDBY IMMEDIATE
[ 9407.439171] ata8.00: cmd e0/00:00:00:00:00/00:00:00:00:00/a0 tag 23
[ 9407.439171] res 40/00:00:00:01:80/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 9407.440220] ata8.00: status: { DRDY }
[ 9417.450143] ata8: softreset failed (device not ready)
[ 9427.462115] ata8: softreset failed (device not ready)
What is the problem?