[DragonFlyBSD - Bug #604] 1.8.1-RELEASE - clock runs fast on mainboard ASUS P5A-B

bugtracker-admin at leaf.dragonflybsd.org bugtracker-admin at leaf.dragonflybsd.org
Tue Nov 18 09:41:44 PST 2014

Issue #604 has been updated by cnb.

dding the debug.acpi.disabled="hpet timer" fixes the timer issue and boots with acpi enabled, there are some errors about ACPI in the log.
I have attached a screenshot.

Bug #604: 1.8.1-RELEASE - clock runs fast on mainboard ASUS P5A-B

* Author: yeti
* Status: In Progress
* Priority: Normal
* Assignee: 
* Category: ACPI
* Target version: 4.0.x
After a fresh install of 1.8.1-RELEASE on a system with ASUS P5A-B
mainboard (ALI chipset), the clock runs twice as fast as normal.

Booting with ACPI disabled solved this problem.

The clock problem on some ATI chipsets was a problem in Linux some
kernels ago too. The solution was triggered by clock=pit as bootarg if I
remember right... maybe having a peek into Linux's code helps.

acpi=off (3.74 KB)
acpi=on (4.32 KB)
acpitimer-off (4.25 KB)

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