8.1-RC2 - PCI fatal error or MCE triggered by USB/ehci on Sun X4100M2?

[Markus Gebert]

On 12.07.2010, at 17:06, John Baldwin wrote:

> Are you using Cx states other than C1 for the CPUs at all?

Not sure how to find out, but I did not change anything in the BIOS settings (if even possible) or through sysctl regarding cpu idle modes. Anyway, here's what I found:

# sysctl machdep.idle machdep.idle_available
machdep.idle: amdc1e
machdep.idle_available: spin, amdc1e, hlt, acpi, 

Not sure if "amdc1e" qualifies for something "other than C1". I tried "hlt" once, which didn't make a difference IIRC. And if that's not what you needed, here's more:

# sysctl dev.cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.P001
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.freq: 2786
dev.cpu.0.freq_levels: 2786/95000 2587/81800 2388/69811 2189/58977 1990/49240 1791/44316 995/22525
dev.cpu.0.cx_supported: C1/0
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% last 500us
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.P002
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0
dev.cpu.1.cx_supported: C1/0
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00% last 500us
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=\_PR_.P003
dev.cpu.2.%pnpinfo: _HID=none _UID=0
dev.cpu.2.%parent: acpi0
dev.cpu.2.cx_supported: C1/0
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00% last 500us
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=\_PR_.P004
dev.cpu.3.%pnpinfo: _HID=none _UID=0
dev.cpu.3.%parent: acpi0
dev.cpu.3.cx_supported: C1/0
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00% last 500us


Markus