On Wed, 30 May 2012 13:37:35 +0800, Bob wrote: > Hi on my laptop (ASUS EeePC 1215b) an AMD E-450 based system the current > open source drivers in Wheezy don't manage power very well so the system > overheats & the battery doesn't last long. [0]
You mean the heat problematic comes exclusively from the GPU? :-? I would also check that cpufreqd is propelry loaded and set with a low power consuming profile. Also, if your netbook has an option to switch to a lower VGA mode it can be also something worth to try. > I've got squeeze running quite nicely with kernel, fglrx & their > dependencies coming from backports, but even then if you tax both cores > the CPU temperature climes quite quickly. Mmm... is also hot with ATI closed-source driver? > What I'd like to do is lower the temperature at which active cooling > starts Changing that values manually can be a risk as this is usually set by the BIOS or the VGA card. > acpi -V > Battery 0: Unknown, 99% > Battery 0: design capacity 5200 mAh, last full capacity 5360 mAh = 100% > Adapter 0: on-line > Thermal 0: ok, 75.0 degrees C > Thermal 0: trip point 0 switches to mode critical at temperature 95.0 degrees > C > Thermal 0: trip point 1 switches to mode passive at temperature 120.0 degrees > C > Cooling 0: LCD 0 of 10 > Cooling 1: Processor 0 of 10 > Cooling 2: Processor 0 of 10 Those "thermal" trip point values seems to be wrong (passive should be reached before critical, that is, when the computer is at a lower temperature). Install and configure "sensors" (or another power-management tool for eeepc) and see what it says, to compare both results. > is "mode critical" the temperature above which the fan starts or at > which the system shuts down? "Trip point" (as its name suggests) indicates a state when an event is reached and action takes place, so I'm more inclined for the former. > Also shouldn't "mode passive" be around 50 assuming it's the temperature > below which the fan turns off to rely on passive cooling? Yup, I also noticed that. It seems wrong. > How do I modify these numbers now the /proc/acpi thermal stuff is > deprecated? I wouldn't tweak these values manually. Maybe you can install a tool that make your fan to be always "on" but a hot computer usually means something is wrong: either you have not loaded the proper modules to control power management or there's a bug in some place (drivers, BIOS...). Greetings, -- Camaleón -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/jq5j0j$l92$1...@dough.gmane.org
