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Cinnamon suddenly very slow and jerky (18.3)

Posted: Tue Aug 27, 2019 8:17 am
by Rehdon
Hi guys,
I don't know if it is somehow related to the latest kernel upgrades, but all of a sudden my 18.3 Cinnamon desktop has become quite slow and jerky, with the mouse moving in a really unpleasant way. Is anybody experiencing anything similar? At first I thought that it was Firefox' fault (it took ten minutes to write a mail in Gmail this morning...), but now I'm not so sure because the problem persists even after closing Firefox.

The weird thing is that if I launch the system monitor nothing is going beyond 15-20% of CPU use, in spite of that the mouse moves jerkily and characters are inserted two-three seconds after I type them in (if I go too fast they're not inserted at all).

Here's the output of inxi -Fxz, thanks for any tip!

Code: Select all

System:    Host: Wodan Kernel: 4.15.0-58-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.7 (Gtk 3.18.9-1ubuntu3.3)
           Distro: Linux Mint 18.3 Sylvia
Machine:   Mobo: ASUSTeK model: H110M-C v: Rev X.0x
           Bios: American Megatrends v: 0508 date: 10/19/2015
CPU:       Quad core Intel Core i5-6500 (-MCP-) cache: 6144 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 25536
           clock speeds: max: 3600 MHz 1: 800 MHz 2: 800 MHz 3: 800 MHz
           4: 800 MHz
Graphics:  Card: NVIDIA GK107 [GeForce GT 740] bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
           Resolution: 1920x1080@60.00hz, 1920x1080@60.00hz
           GLX Renderer: GeForce GT 740/PCIe/SSE2
           GLX Version: 4.5.0 NVIDIA 384.130 Direct Rendering: Yes
Audio:     Card-1 NVIDIA GK107 HDMI Audio Controller
           driver: snd_hda_intel bus-ID: 01:00.1
           Card-2 Intel 100 Series/C230 Series Family HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:1f.3
           Sound: Advanced Linux Sound Architecture v: k4.15.0-58-generic
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: d000 bus-ID: 05:00.0
           IF: enp5s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 2240.5GB (74.9% used)
           ID-1: /dev/sda model: WDC_WD20EFRX size: 2000.4GB
           ID-2: /dev/sdb model: KINGSTON_SV300S3 size: 240.1GB
Partition: ID-1: / size: 22G used: 18G (84%) fs: ext4 dev: /dev/sdb2
           ID-2: /home size: 40G used: 33G (88%) fs: ext4 dev: /dev/sda8
           ID-3: swap-1 size: 4.86GB used: 0.00GB (0%) fs: swap dev: /dev/sda12
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C gpu: 0.0:44C
           Fan Speeds (in rpm): cpu: 0
Info:      Processes: 262 Uptime: 6:07 Memory: 7108.3/15963.4MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 

Re: Cinnamon suddenly very slow and jerky (18.3)

Posted: Tue Aug 27, 2019 8:20 am
by Pjotr
Try this:
https://easylinuxtipsproject.blogspot.c ... html#ID5.1
(item 5.1)

Written for Mint 19.2, but should work in your older Cinnamon as well.

Re: Cinnamon suddenly very slow and jerky (18.3)

Posted: Tue Aug 27, 2019 11:21 am
by Rehdon
Thanks for the tip! I tried all of the steps recommended by that article, let's see if it gets better.

What buggers me is that this happened abruptly, my desktop was fast and smooth just a few weeks ago. Also, while I only have decent CPU and graphic adapter, I got plenty of memory and the root partition lives on an SSD disk: 18.* has always been good for me.

Best wishes,


Re: Cinnamon suddenly very slow and jerky (18.3)

Posted: Wed Aug 28, 2019 2:38 am
by Rehdon
Unfortunately the issue is coming back every now and then: nothing as bad as described in my original post (sloooow appearance of typed characters, erratic and unusable mouse cursor), but still there especially when using Firefox. I will try the hardware acceleration feature, switching it off in FF, but again everything worked perfectly not so long ago... :(

Any ideas, everybody? Will test 19.2 to see if it's any better, but it got a couple of show-stoppers for me.



Re: Cinnamon suddenly very slow and jerky (18.3)

Posted: Wed Aug 28, 2019 4:02 am
by Pjotr
Maybe related: your partitions are getting too full. A Linux partition should always have 20 - 25 % free space, so it shouldn't be filled over 75 - 80 %. This in order to prevent file fragmentation:
https://easylinuxtipsproject.blogspot.c ... 1.html#ID4
(item 4)

Firefox: check the add-ons / extensions that you've installed in it. Those are the usual suspects.

Re: Cinnamon suddenly very slow and jerky (18.3)

Posted: Fri Aug 30, 2019 5:55 am
by Rehdon
Maybe that (partitions almost full) is true for the root and home partitions? I have room there, other practically full partitions never bothered me.

I don't have too many extensions in Firefox (I think :) and they've been the same for about the last six months now.

Thanks for your tips in any case! The site you link in your signature has lots of information.