Kernel Bug Tracker – Bug 5283
Incorrect detection of PM-Timer ioport on ASUS a8v
Last modified: 2005-12-05 14:00:31 UTC
Most recent kernel where this bug did not occur:
Hardware Environment: ASUS a8v deluxe
I running 2.6.12-gentoo-r10
I have a ASUS a8v motherboard with a AMD64 X2
This gives me problem with clock drift
So I tried using notsc to force usage of pm timer.
The the acpi code find the fadt->xpm_tmr_blk.address to 0
Making the code yet again fall back to PIT/TSC
I booted my system and run
perch> grep PM_ /proc/ioports
0808-080b : PM_TMR
And harded the address 0x808 into pmtmr_ioport
This works. The system is using pmtmr and I get no clock drift
(tested now for ~a day)
But why do ACPI find 0 as pmtmr_ioport?
Created attachment 6069 [details]
dmesg and lspci
Created attachment 6070 [details]
patch for handling xpm_pmtmr 0 case
applied to acpi-test tree
shipped in linux-2.6.15-rc5 -- closing.