Cinnamon burns my CPU

[tesla]

Clickbait tile.
But a bit true.

Since this afternoon, my cinnamon process ("cinnamon --replace" in htop) uses a huge percent of my CPU.

i.e :
PID UTIL. PR NI VIRT RES SHR S %CPU %MEM TEMPS+ COM.
5382 tesla 20 0 2371012 304364 81188 R 31,6 1,9 3:05.89 cinnamon
2131 root 20 0 769588 166328 146028 S 9,6 1,0 4:07.88 Xorg
5610 tesla 20 0 1811904 197892 120460 S 9,3 1,2 0:23.25 Web Content
3227 tesla 20 0 2662048 560116 192748 S 8,0 3,4 2:57.88 firefox

________________

or :
PID UTIL. PR NI VIRT RES SHR S %CPU %MEM TEMPS+ COM.
5382 tesla 20 0 2379200 312636 81188 S 71,1 1,9 5:26.85 cinnamon
5610 tesla 20 0 1918312 202692 123716 S 3,0 1,2 0:40.29 Web Content
2134 root -51 0 0 0 0 S 1,7 0,0 1:02.94 irq/126-nv+
3227 tesla 20 0 2668924 573376 188780 S 1,3 3,5 3:08.38 firefox
2131 root 20 0 769588 166328 146028 S 0,7 1,0 4:13.48 Xorg

It slows down my PC a lot (my current typing is twitchy), tho i have a excellent config (i7-7700, 16 Go RAM, 1060). I tried to kill it, relaunched it without "--replace", tried another account. Nothing worked.
It really happened with no reason : it worked perfectly at noon, then i've rebooted on my Windows to play a bit, then reboot on Mint, and bam, CPU's burning.

I've search a bit, nothing convincing (and mainly references to old versions of Mint). I have no applets, no desklets.

Thanks for helping.

[Pjotr]

Please generate an overview of your system like this:
- Launch a terminal window (this is how to launch a terminal window);
- make the terminal window full screen, to avoid chopped lines;
- Copy/paste this command into the terminal:

Code: Select all

inxi -Fxz

(if you type: the letter F is a capital letter)

Press Enter.

Copy/paste the output in your next message.

[tesla]

Yeah, i know the term, thanks :p

Here it is :

Code: Select all

System:    Host: teslatop Kernel: 4.13.0-39-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.4.6 (Gtk 2.24.30) Distro: Linux Mint 18.2 Sonya
Machine:   System: Gigabyte product: H270-HD3 v: Default string
           Mobo: Gigabyte model: H270-HD3-CF v: x.x Bios: American Megatrends v: F1 date: 11/22/2016
CPU:       Quad core Intel Core i7-7700 (-HT-MCP-) cache: 8192 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 28800
           clock speeds: max: 4200 MHz 1: 1440 MHz 2: 3301 MHz 3: 3582 MHz 4: 3472 MHz 5: 3503 MHz 6: 3457 MHz
           7: 3019 MHz 8: 3457 MHz
Graphics:  Card: NVIDIA Device 1c03 bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
           Resolution: 1920x1200@59.95hz, 3840x2160@60.00hz, 1440x900@59.90hz
           GLX Renderer: GeForce GTX 1060 6GB/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 384.111 Direct Rendering: Yes
Audio:     Card-1 Intel Device a2f0 driver: snd_hda_intel bus-ID: 00:1f.3 Sound: ALSA v: k4.13.0-39-generic
           Card-2 NVIDIA Device 10f1 driver: snd_hda_intel bus-ID: 01:00.1
           Card-3 Logitech G430 Surround Sound Gaming Headset driver: USB Audio usb-ID: 001-004
Network:   Card: Intel Ethernet Connection (2) I219-V driver: e1000e v: 3.2.6-k bus-ID: 00:1f.6
           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 512.1GB (48.2% used) ID-1: /dev/sda model: TOSHIBA_THNSNJ51 size: 512.1GB
Partition: ID-1: / size: 273G used: 230G (89%) fs: ext4 dev: /dev/sda6
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C gpu: 0.0:49C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 253 Uptime: 6 min Memory: 1378.2/15999.4MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35

[Pjotr]

Try these things:

1. Update Manager - panel: Edit - Upgrade to "Linux Mint 18.3 Sylvia".
Do the upgrade and reboot afterwards.

2. Update Manager - panel: View - Linux kernels
Install the latest kernel of the 4.15 series. Reboot again.

[tesla]

Well, i don't have "cinnamon --replace" anymore, just "cinnamon" using 15-40% of my CPU…

Optional question : why the update manager didn't suggest me to update to 18.3 ?

[Pjotr]

Optional question : why the update manager didn't suggest me to update to 18.3 ?

Because a version upgrade is completely optional. Usually there's no need at all...