Unresponsive desktop 18.04 after more than 30 min idle time


Is anyone else having problems with an unresponsive desktop after a long idle time. The screen wakes and mouse moves and keyboard lights change when pressed but the desktop is totally unresponsive. Ctrl+Alt+t does not bring up a terminal either ? Reboot is the only fix.

Regards Zeb…

[email protected]:~$ inxi -Fz
System: Host: i7-mate Kernel: 4.15.0-15-generic x86_64 bits: 64 Desktop: MATE 1.20.1
Distro: Ubuntu Bionic Beaver (development branch)
Machine: Device: desktop Mobo: ASUSTeK model: Z170 PRO GAMING v: Rev X.0x serial: N/A
UEFI: American Megatrends v: 1601 date: 03/18/2016
CPU: Quad core Intel Core i7-6700K (-MT-MCP-) cache: 8192 KB
clock speeds: max: 4300 MHz 1: 1165 MHz 2: 3333 MHz 3: 3417 MHz 4: 3328 MHz 5: 3451 MHz 6: 3563 MHz
7: 2898 MHz 8: 3108 MHz
Graphics: Card: NVIDIA GP106 [GeForce GTX 1060 6GB]
Display Server: x11 (X.Org 1.19.6 ) driver: nvidia Resolution: [email protected], [email protected]
OpenGL: renderer: GeForce GTX 1060 6GB/PCIe/SSE2 version: 4.6.0 NVIDIA 390.48
Audio: Card-1 NVIDIA GP106 High Definition Audio Controller driver: snd_hda_intel
Card-2 Intel Sunrise Point-H HD Audio driver: snd_hda_intel
Card-3 Logitech HD Pro Webcam C920 driver: USB Audio
Card-4 C-Media driver: USB Audio
Sound: Advanced Linux Sound Architecture v: k4.15.0-15-generic
Network: Card: Intel Ethernet Connection (2) I219-V driver: e1000e
IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac:
Drives: HDD Total Size: 9708.0GB (50.6% used)
ID-1: /dev/nvme0n1 model: SAMSUNG_MZVLV256HCHP size: 256.1GB
ID-2: /dev/sda model: SanDisk_Ultra_II size: 960.2GB
ID-3: /dev/sdb model: ST5000DM000 size: 5001.0GB
ID-4: /dev/sdc model: SanDisk_SSD_PLUS size: 120.0GB
ID-5: /dev/sdd model: Samsung_SSD_850 size: 250.1GB
ID-6: /dev/sde model: WDC_WD30EZRX size: 3000.6GB
ID-7: /dev/sdf model: SanDisk_SSD_PLUS size: 120.0GB
Partition: ID-1: / size: 110G used: 12G (12%) fs: ext4 dev: /dev/sdc2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 29.8C mobo: 27.8C gpu: 41C
Fan Speeds (in rpm): cpu: 0
Info: Processes: 255 Uptime: 16 min Memory: 1937.4/32091.5MB Client: Shell (bash) inxi: 2.3.56
[email protected]:~$

maybe once in a while but not commonly, not enough that I notice it much

This is happening every time the screen goes off and stays off. Re-activate within 5 mins and its all good.

Hi @ZebedeeBoss,

do you have suspend active?, that would normally cause problems for me which is why I don’t use it?. :smiley:

Sorry, been mental busy at work. No I only have screen off after 10 mins. but even if I don’t have that on it still does it

I am beginning to think it might be my monitor at fault ? or the latest nvidia-drivers 396

Hi @ZebedeeBoss,

try changing your software sources download location and see if it fixes the problem, you may have something missign on your system?:


Even on a brand new install it is still doing it. It does not do it on Xubuntu or Kubuntu Flavours :frowning:

This was my second big shock after fresh installing.
I dont want to repeat my personal spam story, but try this

open system terminal and type:
dconf reset -f /

in my case - 99% things were fixed after restarting

Yes I know… Same story but try: just type that simple command mentioned in the post above

Desperation took hold and I re-installed yesterday. Got up this morning; moved the mouse and a few seconds later the screen woke up… Don’t ya just H8 computing sometimes.

Thanks to everyone who tried to assist. It is appreciated and to Vladimr75. Apologies I never got back to you but the dconf command did not resolve the issue on the previous install. Topic marked as Resolved.

Regards Zeb…