[SOLVED] kernel does not recognize HPET on 32x system
#1
32 bit system (v1 P7 & life CD) do not support HPET
 i have message:
 
[    0.852067] hpet_acpi_add: no address or irqs in _CRS

clocksurse then was set to TLC

On the same hardware 64 bit system work fine with clocksourse HPET

HPET is important (more deep bass & more fluent music)
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#2
(13-Jan-2018, 03:25 AM)Gogi Wrote: 32 bit system (v1 P7 & life CD) do not support HPET
 i have message:
 
[    0.852067] hpet_acpi_add: no address or irqs in _CRS

clocksurse then was set to TLC

On the same hardware 64 bit system work fine with clocksourse HPET

HPET is important (more deep bass & more fluent music)

The reason why HPET works in 64 bit but not 32 bits is because the HPET timer is set to 64 bits wide. There are various HPET implementations that I know of:
  1. 32 bit register only. Works in both 32 and 64 bit OS. Downside is less resolution when in 64 bit mode (doesn't really matter).
  2. 64 bit register, no option to set to 32 bit HPET in BIOS. So this HPET works in 64 bit OS but no HPET in 32 bit OS.
  3. 64 bit register, with option to set to 32 bit HPET in BIOS.
You are not using motherboard #1.

So it's either #2 or #3. If you own motherboard #2, unfortunately there is nothing you can do (unless you're lucky to find a hacked or new BIOS that unlock more menu items).

If motherboard #3, you can set the HPET type to 32 bit in the BIOS. Save the settings and reboot, the timer will now work for both 32 bits and 64.
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