System keeps getting following messages:
ACPI: EC: acpi_ec_wait timeout, status = 8, expect_event = 1 ACPI: EC: read timeout, command = 164
Tried to add acpi=off in kernel option, which results black screen after reboot.
What is the kernel version being used ?
See this bug as a possible refrence: https://bugs.launchpad.net/linux/+bug/191137
Don't know anything about the system. But if it is dual core try acpi=off & apic=off and see what happens.
You want acpi on so it's either an older kernel issue or the embedded control has something wrong and needs an update to fix it.
Bug watches keep track of this bug in other bug trackers.
Tried to add acpi=off in kernel option, which results black screen after reboot.