Pavel Machek wrote: > Hi! >>> On Tue, Aug 12, 2008 at 11:41:35AM +0200, Pavel Machek wrote: >>>>>> Aug 6 11:00:10 amd kernel: ACPI: Critical trip point >>>>>> Aug 6 11:00:10 amd kernel: Critical temperature reached (128 C), >>>>>> shutting down. >>>>>> Aug 6 11:00:10 amd shutdown[24414]: shutting down for system halt >>>>>> >>>>>> ...and machine went down at that point :-(. >>>>> I hope you can easily reproduce it? >>>>> >>>>> So it's new in 2.6.27rc1 and wasn't in 2.6.26? Can you please >>>> Yes, I'm very sure. It makes machine basically unusable. >>> Does this mean you can easily reproduce it? >>> Please do a bisect then. >>> >>>> Not that one :-(. Thinkpad does not even have fan device: it is >>>> controlled by hardware. >> Hi, >> I see exactly the same on my x60s, but during upgrade to 2.6.26.2. > > Are you sure? yes. maybe some userspace tool controlling frequency is involved, no idea yet. But it is 2.6.26 tree for sure. > >> I found that (at least in my case) the problem is, that in >> 2.6.25 the core frequency drop to 1GHz (instead of 1.67GHz) when >> the temperature is above some limit. > > Can you verify that 2.6.26 is okay? No, it is not ok. I'll run bisect again, but I hit it at least one in some 2.6.26-rc too. > >> Now, the CPU cores remains on 1.67GHz and fan is unable to cool them properly >> under heavy load (even if I set "level disengaged" through thinkpad fan control, >> temperature sensor shows after a while 128 C (probably not real temp, >> I expect some critical flag => and it properly switch off the >> system...) > > How do you control fans? I could not get anything but -EINVAL from IBM > ACPI driver :-(. you need add fan_control=1 to thinkpad_acpi module http://www.thinkwiki.org/wiki/How_to_control_fan_speed http://www.thinkwiki.org/wiki/ACPI_fan_control_script >> (I had bad reproducer script in bisect and bisect failed, so I'll try it again, >> but anyway, for me the bug is even in 2.6.26 tree. It never happened in 2.6.25.) > > Hmmm... that's seriously strange. I definitely don't see it in > 2.6.26. Maybe it is config dependend?! (Attaching my 2.6.27-rc2 > failing config.) hm. strange, I'll try this config too... Milan -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
