I've got a Dell Latitude D630 with Mint 12 KDE (see below for complete specs). The laptop's CPU fan seems to be going nearly all the time, for no good reason. There is no heavy CPU load or read/write that I can tell from System Monitor. Right now the fan is on and I have two firefox tabs open and the terminal. I even opened up the case and cleaned out dust.
Running "sensors" gives the following (from right now, but this is typical):
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Adapter: Virtual device
temp1: +45.5°C (crit = +99.0°C)
Adapter: ISA adapter
Core 0: +43.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +46.0°C (high = +100.0°C, crit = +100.0°C)
Any ideas of how to stop the fan? Or, is this indicative of some problem? It seems like if I could just set the fan to kick on at 55 C, it would be fine.
Is there something else I should test/post that would be helpful? I poked around the BIOS and didn't see an obvious way to control the fans, and I installed fancontrol and ran pwmconfig, but apparently I don't have any pwm-compatibility.
PS. I'm a relative newbie, so don't take anything for granted! But I'm brave enough to tinker around a fair bit, so don't be shy.
Edited to include the output of "inxi -Fc 0":
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System: Host workcomputer Kernel 3.0.0-12-generic x86_64 (64 bit) Desktop KDE 4.7.4 Distro Linux Mint 12 KDE
Machine: System Dell (portable) product Latitude D630
Mobo Dell model 0dt781 Bios Dell version A17 date 01/04/2010
CPU: Dual core Intel Core2 Duo CPU T7250 (-MCP-) cache 2048 KB flags (lm nx sse sse2 sse3 ssse3 vmx)
Clock Speeds: (1) 800.00 MHz (2) 800.00 MHz
Graphics: Card: Intel Mobile GM965/GL960 Integrated Graphics Controller (primary)
X.Org 1.10.4 drivers intel unloaded: vesa,fbdev Resolution firstname.lastname@example.org
GLX Renderer Mesa DRI Intel 965GM GLX Version 2.1 Mesa 7.11
Audio: Card Intel 82801H (ICH8 Family) HD Audio Controller driver HDA Intel Sound: ALSA v: 1.0.24
Network: Card-1 Broadcom NetXtreme BCM5755M Gigabit Ethernet PCI Express driver tg3
IF: eth0 state: down speed: 65535 Mbps duplex: full mac: 00:18:8b:db:e7:46
Card-2 Intel PRO/Wireless 3945ABG [Golan] Network Connection driver iwl3945
IF: wlan0 state: up mac: 00:1f:3c:a1:84:bc
Drives: HDD Total Size: 80.0GB (28.4% used) 1: /dev/sda ST980811AS 80.0GB
Partition: ID:/ size: 9.2G used: 7.1G (81%) fs: ext4 ID:/boot size: 461M used: 40M (10%) fs: ext4
ID:swap-1 size: 4.00GB used: 0.03GB (1%) fs: swap
Sensors: System Temperatures: cpu: 45.5C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes 156 Uptime 1 day Memory 1026.3/3952.4MB Client Shell inxi 1.7.7