Hi, Could you try the patch from http://bugzilla.kernel.org/show_bug.cgi?id=7887 to see if it's related? Regards. Konstantin. >-----Original Message----- >From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- >owner@xxxxxxxxxxxxxxx] On Behalf Of Markus Demleitner >Sent: Monday, February 05, 2007 6:36 PM >To: linux-acpi@xxxxxxxxxxxxxxx >Subject: Thermal resume "regression" > >Hi, > >Since 2.6.20 is out and nobody else seem to complain, I thought >it's time to ask -- > >From kernel version 2.6.18 on my JVC XP731 (a centrino-based >subnotebook) would freeze when resuming from > >echo -n mem > /sys/power/state > >where it woke up flawlessly before. Turns out it did this because in >drivers/acpi/thermal.c, function acpi_thermal_resume, a call to >acpi_thermal_check was introduced (that's line 1415 in 2.6.20). The >lockup at resume time is deterministic, i.e., it is independent of >the actual temperature of the device(s). > >Commenting it out results in a flawless wakeup (as does removing the >thermal module at suspend time). > >Now, I have to admit I didn't investigate matters much further, but >still: acpi_thermal_check does quite a few rather fancy things, and >regardless if the freeze on resume is an issue of the JVC (as the >lack of other complaints suggests) or not -- is it absolutely >necessary to run it during resume, when things are a nightmare to >debug (which is one reason I didn't investigate further)? I for one >would appreciate if it were only called after the system is up and >running, when one could at least see what the kernel thinks it's >doing... > >Disclaimer: I only have very shady ideas what's actually going on >with ACPI thermal management. If not calling acpi_thermal_check >actually significantly increases the likelihood of fried machines, >disregard all this as layman babble, and I'll just add thermal to the >list of modules that don't survive a suspend to RAM. > >Cheers, > > Markus > >- >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 - 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
