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Lars Noodén
March 30th, 2014, 12:00 PM
Editing in Gedit causes the CPU to overheat and the fan to kick into high gear when I am actively editing:



Mar 30 13:50:48 lubuntu dbus[482]: [system] Activating service name='org.freedesktop.hostname1' (using servicehelper)
Mar 30 13:50:48 lubuntu dbus[482]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 30 13:51:36 lubuntu kernel: [212933.326558] CPU2: Core temperature above threshold, cpu clock throttled (total events = 7467)
Mar 30 13:51:36 lubuntu kernel: [212933.326559] CPU6: Core temperature above threshold, cpu clock throttled (total events = 7467)
Mar 30 13:51:36 lubuntu kernel: [212933.326562] CPU4: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326564] CPU5: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326566] CPU1: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326567] CPU0: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326569] CPU3: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326571] CPU7: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326572] CPU6: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.326585] CPU2: Package temperature above threshold, cpu clock throttled (total events = 14104)
Mar 30 13:51:36 lubuntu kernel: [212933.327540] CPU2: Core temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327541] CPU6: Core temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327543] CPU4: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327544] CPU0: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327546] CPU1: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327547] CPU3: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327550] CPU7: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327551] CPU5: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327552] CPU6: Package temperature/speed normal
Mar 30 13:51:36 lubuntu kernel: [212933.327561] CPU2: Package temperature/speed normal


When it is open but just idle, there is nothing special about the temperature.

top shows nothing suspicious:



top - 13:51:57 up 4 days, 15:26, 8 users, load average: 2,48, 0,89, 0,51
Tasks: 257 total, 1 running, 241 sleeping, 0 stopped, 15 zombie
%Cpu(s): 0,5 us, 0,3 sy, 0,0 ni, 99,2 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st
KiB Mem: 3956768 total, 3388944 used, 567824 free, 151620 buffers
KiB Swap: 3905532 total, 165824 used, 3739708 free. 1463960 cached Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16235 user 20 0 893180 170964 41740 S 2,3 4,3 2:14.47 firefox
4744 user 20 0 1284668 246784 35460 S 1,3 6,2 13:55.04 thunderbird
16047 user 20 0 31556 1780 1192 S 0,7 0,0 1:19.75 top
108 root 20 0 0 0 0 S 0,3 0,0 0:27.13 kworker/6:1
2525 root 20 0 359552 118316 21408 S 0,3 3,0 190:06.17 Xorg
3699 user 20 0 563388 15572 8344 S 0,3 0,4 2:41.42 x-terminal+
21520 user 20 0 31424 1768 1180 R 0,3 0,0 0:00.03 top
22196 user 20 0 1560076 26232 10996 S 0,3 0,7 6:26.54 transmis


It happens pretty much every time I resume editing.

What should I look for to identify the cause of the problem?

Lars Noodén
March 30th, 2014, 02:13 PM
It's the ibus-daemon flaring up, very briefly.



PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2730 user 20 0 373672 23440 1740 R 172,6 0,6 45:11.21 ibus-daemon
2756 user 20 0 285672 3660 2604 S 105,9 0,1 26:31.45 ibus-x11
2525 root 20 0 358760 118124 21216 S 87,6 3,0 197:29.28 Xorg
11441 user 20 0 971708 73700 17856 S 81,3 1,9 13:22.85 gedit


Very hard to catch it in top.

trag
April 16th, 2014, 06:59 AM
Improving power management may help,install TLP from repositories.
sudo add-apt-repository ppa:linrunner/tlp
sudo apt-get update
sudo apt-get install tlp tlp-rdw
If you haven't thought of it all ready,clean the fan and vents with canned air.Picking up a Laptop cooling pad would be something to consider.
good luck
trag