http://bugzilla.kernel.org/show_bug.cgi?id=5534
------- Additional Comments From macer@... 2005-11-26 12:47 -------
First results with the latest patch (attachment 6678) applied.
(Machine on battery: trips at 58, 65, etc deg C)
I ran tail -f /var/log/syslog. Then I started glxgears and watched. The
appearance of thermal events in the syslog did not seem to correlate with fan
usage. I don't like polling because it results in worse behaviour than the
asynchronous mode, so I echoed 0 into each of
/proc/acpi/thermal_zone/TZ?/polling_frequency, to disable polling and ran the
test again. This time didn't observe thermal events until I did an acpi -t (by
which time my CPU was frying -- 71 deg C!). Stopped glxgears and watched. Saw
thermal event register in the logs and at the same time fan turned off.
Anyway, here's the part of my syslog showing this state of affairs.
--------------------------begin---------------------------------------------
Nov 26 22:27:24 localhost kernel: APIC error on CPU0: 00(40)
Nov 26 22:27:52 localhost kernel: APIC error on CPU0: 40(40)
Nov 26 22:28:20 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:28:20 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:29:28 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:29:28 localhost last message repeated 156 times
Nov 26 22:29:28 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:29:52 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:29:52 localhost last message repeated 49 times
Nov 26 22:29:52 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:30:42 localhost kernel: APIC error on CPU0: 40(40)
Nov 26 22:31:45 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:31:45 localhost last message repeated 399 times
Nov 26 22:31:45 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:32:49 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:32:49 localhost last message repeated 39 times
Nov 26 22:32:49 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:33:11 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:33:11 localhost last message repeated 14 times
Nov 26 22:33:11 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:36:28 localhost kernel: APIC error on CPU0: 40(40)
Nov 26 22:36:32 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:36:32 localhost last message repeated 164 times
Nov 26 22:36:32 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:37:05 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:37:05 localhost last message repeated 44 times
Nov 26 22:37:05 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:37:51 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:37:51 localhost last message repeated 8 times
Nov 26 22:37:51 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:39:03 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:39:03 localhost last message repeated 8 times
Nov 26 22:39:50 localhost last message repeated 5 times
Nov 26 22:39:50 localhost kernel: ------------------ Got thermal event 0x81
Nov 26 22:40:36 localhost kernel: ------------------ Got thermal event 0x80
Nov 26 22:40:36 localhost last message repeated 8 times
Nov 26 22:40:36 localhost kernel: ------------------ Got thermal event 0x81
-------------------end-----------------------------------------------------
The second from last event 0x80 corresponded to the fans turning off, then I got
an 0x80 (x8). It seems like a lot of events are being generated without being
processed. Can anybody understand this?
--
Richard
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