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jaapkroe
n00b
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Joined: 06 Jul 2006
Posts: 4

PostPosted: Thu Jul 06, 2006 5:17 pm    Post subject: Emerge only works in freezer Reply with quote

plot of temperature of my harddisk

Since my laptop tends to get to hot whenever it has to do some real work, I currently have to put it in the freezer to emerge something bigger than 1MB. If I don't then in the middle of an emerge it will just switch off instantly. The fan is ok and I've given it enough space to let air in. I guess it's just the weather but I've never had this before. Does any else have this problem?

p.s. That plot is of the temperature of my harddisk which has survival limits of 13 and 53 celcius, so I had to get it out of the freezer :)
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KiTaSuMbA
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Joined: 28 Jun 2002
Posts: 430
Location: Naples Italy

PostPosted: Fri Jul 07, 2006 12:08 am    Post subject: Reply with quote

Hot weather alone cannot explain on its own pushing the CPU temp over the trip point. I actually find it surprising that you correlate the HDD temp but not the cpu one (found within /proc/acpi/thermal_zone/) especially since the "starting point" is under 45°C. My current operating (pretty much idle) temps on an Asus L3C are 44°C for the CPU and 49°C for the hard disk while pushing on huge ebuilds (e.g. any "serious" kde stuff) brings the CPU on 62 tops and the disk around 55.

Some useful hints:
- control the "dirtyness" not only of the fan but also of the heatsink. Most laptops allow a more or less easy access to the heatsink. You have to check the manual/web for instructions about your specific model.
- If you have to remove the heatsink in order to clean it or you keep having extreme temps while clean, substitute the thermal paste with a fresh good quality one (I personally prefer the "arctic silver" type). Before applying the new layer of thermal paste, make sure you clean all residues of the old one *without* using abrasive materials (best and safest results with a soft cloth dampen with isopropylic alcohol from your local chemist).

*WORDS of CAUTION*
1. STOP stuffing the laptop in the freezer!!! The rapid thermal stress and the humidity can and will eventually kill it.
2. If your laptop is still under warranty, any of the above mentioned operations clearly VOID the warranty. So get it to the authorised tech support rather than do it yourself.
3. If you are not totally confident about your manual skills or experience on hardware, have an experienced technician do the check/clean/re-paste for you. Paying a few dollars/euros/whatever more is better than ruining an otherwise perfectly working laptop.
4. Until you resolve the temperature issue stop "pushing" your laptop on hard work. As a matter of fact, use it only for the absolutely necessary and never leave it on, unattended.

*Personal Story*
I myself once fried a RAM module for not recognising the hi temp issue early enough and leaving the damn thing to emerge -uND world overnight. The morning after I found out that the hardware protection kicked-in and shutted down the pc at 68°C CPU temp, but it was too late for the RAM module closest to the heatsink... The problem, I later realized, was that due to the "bad environment conditions" I kept running the laptop (on the move, dirty rooms, outdoors) an actual "dirt plug" was formed within the heatsink, blocking airflow and mooting the fan's operation. I learned the hard (and bitter) way that off-the-shelf laptops are WAY TOO SENSITIVE for 24/7 operation or other "hardships" no matter what any reseller or commercial will try to tell you.

PS.: Is that fit produced with R? It certainly looks like it... :)
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