Hello, Abraham. It is possible, that the trip points are being reset by BIOS on thermal events. To make sure, please, send the output of acpidump and dmesg commands. 'acpidump' available in pmtools here: http://ftp.kernel.org/pub/linux/kernel/people/lenb/acpi/utils/
You can use [email protected] mailing list or open a new entry in bugzilla.kernel.org under ACPI/Power-Thermal component. Regards. Konstantin. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Saturday, March 18, 2006 7:03 AM To: Grover, Andrew; [EMAIL PROTECTED] Cc: Abraham David Smith Subject: linux kernel ACPI thermal trip_points I have a question about the acpi thermal_zone driver as it appears in the 2.6.15 kernel series. Naturally, I've already search the web and various forums before emailing the driver authors, On my laptop (a Sharp Actius PC-UM32W), the following occurs: The default trip_points are hedwig THRM # cat trip_points critical (S5): 95 C passive: 85 C: tc1=1 tc2=5 tsp=30 devices=0xcf6c2448 active[0]: 70 C: devices=0xcf6c3708 active[1]: 63 C: devices=0xcf6c3948 active[2]: 55 C: devices=0xcf6c3b88 Then, I reset them as follows hedwig THRM # echo -n "75:0:30:45:40:35" > trip_points hedwig THRM # cat trip_points critical (S5): 75 C passive: 30 C: tc1=1 tc2=5 tsp=30 devices=0xcf6c2448 active[0]: 45 C: devices=0xcf6c3708 active[1]: 40 C: devices=0xcf6c3948 active[2]: 35 C: devices=0xcf6c3b88 However, the new trip points are ignored, and once the temp rises or falls across one of the *original* trip points, they are then shown as at first: hedwig THRM # cat trip_points critical (S5): 95 C passive: 85 C: tc1=1 tc2=5 tsp=30 devices=0xcf6c2448 active[0]: 70 C: devices=0xcf6c3708 active[1]: 63 C: devices=0xcf6c3948 active[2]: 55 C: devices=0xcf6c3b88 (The only relevant daemon running is acpid-1.0.4, and it is merely printing behaviour to the system logs.) Do you have any suggestions as to how to override this behavior or otherwise force lower trip-points? Thanks, Abe Smith -- # Abraham David Smith, <[EMAIL PROTECTED]> # # http://fds.duke.edu/db/aas/math/grad/adsmith # # Please enable PGP or GnuPG for email privacy! # # Mathematics Graduate Student, Duke University # - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
