the only way I can resume it is by force shutdown & reboot again. This usually happens when it is running in battery regardless of charge (it occured when battery is around 70% as well as 35%) & mostly seems to happen when CPU or RAM usage goes high. Laptop is Lenovo IdeaPad 320 series with Intel i5 7th gen, AMD Radeon graphics 530 4 GB, 12 GB RAM.
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