Solved: Screen repeatedly goes black shortly - what to do?

[Dan-cer]

Since yesterday, the screen repeatedly goes black for a short time. I have checked the cables, but not yet the graphics card. Is there a test option in Linux? Should I change nvidia driver? Here is the system information:

Code: Select all

System:    Kernel: 5.4.0-122-generic x86_64 bits: 64 compiler: gcc v: 9.4.0 
           Desktop: Cinnamon 5.2.7 wm: muffin dm: LightDM Distro: Linux Mint 20.3 Una 
           base: Ubuntu 20.04 focal 
Machine:   Type: Desktop Mobo: ASRock model: Z97 Extreme4 serial: <filter> 
           UEFI: American Megatrends v: P2.60 date: 03/06/2018 
CPU:       Topology: Quad Core model: Intel Core i5-4460 bits: 64 type: MCP arch: Haswell rev: 3 
           L2 cache: 6144 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 25591 
           Speed: 1000 MHz min/max: 800/3400 MHz Core speeds (MHz): 1: 970 2: 997 3: 1094 4: 1012 
Graphics:  Device-1: NVIDIA GP108 [GeForce GT 1030] driver: nvidia v: 515.65.01 bus ID: 01:00.0 
           chip ID: 10de:1d01 
           Display: x11 server: X.Org 1.20.13 driver: nvidia 
           unloaded: fbdev,modesetting,nouveau,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: NVIDIA GeForce GT 1030/PCIe/SSE2 v: 4.6.0 NVIDIA 515.65.01 
           direct render: Yes 
Audio:     Device-1: Intel 9 Series Family HD Audio vendor: ASRock driver: snd_hda_intel v: kernel 
           bus ID: 00:1b.0 chip ID: 8086:8ca0 
           Device-2: NVIDIA GP108 High Definition Audio driver: snd_hda_intel v: kernel 
           bus ID: 01:00.1 chip ID: 10de:0fb8 
           Sound Server: ALSA v: k5.4.0-122-generic 
Network:   Device-1: Intel Ethernet I218-V vendor: ASRock driver: e1000e v: 3.2.6-k port: f040 
           bus ID: 00:19.0 chip ID: 8086:15a1 
           IF: enp0s25 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 1.25 TiB used: 616.33 GiB (48.3%) 
           ID-1: /dev/sda vendor: Samsung model: SSD 840 EVO 250GB size: 232.89 GiB 
           speed: 6.0 Gb/s serial: <filter> 
           ID-2: /dev/sdb vendor: Samsung model: SSD 850 EVO 120GB size: 111.79 GiB 
           speed: 6.0 Gb/s serial: <filter> 
           ID-3: /dev/sdc vendor: Seagate model: ST1000DM003-1ER162 size: 931.51 GiB 
           speed: 6.0 Gb/s serial: <filter> 
Partition: ID-1: / size: 96.00 GiB used: 28.90 GiB (30.1%) fs: ext4 dev: /dev/sda2 
           ID-2: /home size: 132.24 GiB used: 41.51 GiB (31.4%) fs: ext4 dev: /dev/sda6 
Sensors:   System Temperatures: cpu: 34.0 C mobo: N/A gpu: nvidia temp: 45 C 
           Fan Speeds (RPM): N/A 

EDIT://
It is not really solved, but most probably has it to do with loose contact of hdmi input.

[SMG]

EDIT://
It is not really solved, but most probably has it to do with loose contact of hdmi input.

It goes black and then comes back?
Lack of good HDMI connection can cause a black screen. The other possibility might be an overheat situation on the GPU.

[Dan-cer]

Yeah, it's pretty clear by now. There was no other black screen moment. It was probably due to the plug connection.