Thomas Renninger wrote:
On Sun, 2008-04-27 at 10:06 +0100, Richard wrote:
Hi all,
Pardon for the intrusion, I am trying to fault find a horrible wrong
ACPI interface and fix it.
the problem is as follows...
Kernel 2.6.23 works fine, except there is no stable clocksource..
acpi_pm, tsc doesnt work and jiffies .. well thats just jiffies. The
kernel boots but time sources are erratic and this results in an
unstable clock (Mp3's play at erratic speeds)
Kernel 2.6.25 hangs the system if I enable ACPI Timer and rebuild/boot
the new linux kernel. The only clock sources are tsc and jiffies and TSC
is disables due to being erratic. If I totally disable ACPI, the kernel
boots and works with stable clocks.. but obviously Power management is
gone.
The system is an ATI bridged AMD Sempron notebook. I have tried Millions
of options in the kernel bootup and none seem to do clear the problem.
This system seems to suffer from the Clocks fast bug. (the dmesg reports
that the 8254 clock is disables, IO-APIC int0 fails and IO-APIC Vritual
wire is OK.. if that means anything :D)
Any pointers.. and if anyone wants the AML/ACPI stuff, please feel free
to shout.
Does:
disable_timer_pin_1
or
noapictimer
work?
Thomas
Thanks a Million..
noapictimer works perfectly ... BUT .. only on 64Bit. acpi_pm is not
present on 32bit as a clocksource and it defaulted to jiffies. (tsc was
marked as imreliable)
I am really surprised that this Sempron notebook actually had 64Bit CPU
compatibility :D
Richard
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