Blur Busters Forums

triplese wrote: ↑

25 Jan 2023, 18:39

Today I was playing on my laptop with plugged charger and while scrolling shop I saw tearing on LCD.
I disconnected charger - tearing disappeared. Connected - tearing.
Video here: https://imgur.com/a/kqEAJ6F
Then I tried offgrid test - powerbank with 12v output connected to router (fiber uplink) and play via wifi with disconnected charger on laptop.
Results is great - no desync at all.
So probably, I have first strong evidence that I have problems definitely with electricity.
Then I played few cs wingman on PC on grid and router offgrid.
Results are still better then on grid - little-to no desync, but slow movement is still here.
Tomorrow I will go to office to make same tearing test and then maybe will try to find fluke analyzer (but it cost around $1000) to compare electricity parameters or try to buy transformer.

triplese wrote: ↑

25 Jan 2023, 18:39

Today I was playing on my laptop with plugged charger and while scrolling shop I saw tearing on LCD.
I disconnected charger - tearing disappeared. Connected - tearing.
Video here: https://imgur.com/a/kqEAJ6F
Then I tried offgrid test - powerbank with 12v output connected to router (fiber uplink) and play via wifi with disconnected charger on laptop.
Results is great - no desync at all.
So probably, I have first strong evidence that I have problems definitely with electricity.
Then I played few cs wingman on PC on grid and router offgrid.
Results are still better then on grid - little-to no desync, but slow movement is still here.
Tomorrow I will go to office to make same tearing test and then maybe will try to find fluke analyzer (but it cost around $1000) to compare electricity parameters or try to buy transformer.

triplese wrote: ↑

25 Jan 2023, 18:39

Today I was playing on my laptop with plugged charger and while scrolling shop I saw tearing on LCD.
I disconnected charger - tearing disappeared. Connected - tearing.

Eonds wrote: ↑

26 Jan 2023, 03:04

That screen tearing behavior is what I've actually had and still do have. My friend also has it really bad. It's related to electricity i can tell you that. It simply confirms what I already believed. I'd love to get in contact with you and have a chat. RealJerryXOC#7693

Chief Blur Buster wrote: ↑

26 Jan 2023, 03:27

triplese wrote: ↑

25 Jan 2023, 18:39

Today I was playing on my laptop with plugged charger and while scrolling shop I saw tearing on LCD.
I disconnected charger - tearing disappeared. Connected - tearing.

Eonds wrote: ↑

26 Jan 2023, 03:04

That screen tearing behavior is what I've actually had and still do have. My friend also has it really bad. It's related to electricity i can tell you that. It simply confirms what I already believed. I'd love to get in contact with you and have a chat. RealJerryXOC#7693

Chiming in to correct a line-item myth.

VSYNC tearing is never directly caused by electricity, it's just a cause-and-effect, a domino effect.

- The power management plan configuration settings can change sync settings (driver power management bugs, etc)
- Another common cause is the automatic switch from Intel GPU to NVIDIA/AMD GPU, because many laptops have two GPUs. The different GPUs in the system may have different sync technology behaviors, and the act of GPU switching may not be 100% seamless and may have bugs.
- In some sync technologies, VSYNC OFF may be dynamic. (Like framerates above Hz on VRR, or as an automatic behavior in non-VRR "Adaptive VSYNC"), and battery power can have lower framerates that don't show tearing, while AC power can have higher frame rates that do show tearing because the extra power generated more frames that simply triggered an enable of VSYNC OFF behavior.
- Conversely, sometimes laptop are currently preconfigured by OEM's to switch refresh rates when unplugged, e.g. lower refresh rate when unplugged and when not running a game. The current refresh rate of the screen can influence whether or not tearing appears or not.
- In certain setting screens, laptop software are designed to remember settings when plugged in versus when unplugged, so settings that you configured plugged may not be utilized unplugged, and vice-versa. This can, sometimes, include sync technology setting (VSYNC ON versus VSYNC OFF), even for non-game software too.
- Etc.

It just take ONE of the above to explain things, so you don't need to have all the above, for tearing to appear.

This SPECIFIC tearing symptom also happens with perfectly clean electricity too.
So it's definitely not evidence it's from bad electricity.

So just a coincidential cause-and-effect;

However, other side effects from mediocre electricity technicals can still happen (e.g. desync and whatnot), but often it's a soup of multiple causes and problems happening concurrently by coincidence. The other symptoms may or may not be caused by less-than-ideal electricity (waveforms, noise, voltages, other behaviors) -- but the tearing portion of all the symptoms is never directly caused by the electricity.

Yes, desync and tearing can happen at the same time, but multiple things are simply happening at the same time (interference triggering desync, while power management software triggering VSYNC tearing). Desync can be caused by the electrical interference, but the tearing often still happens even when suddenly plugging into perfect interference-free electricity.

Be careful about confusing multiple coincidential causes.

assombrosso wrote: ↑

25 Jan 2023, 19:07

It’s electricity and RFI imo, in your case I think you have both. Solution is solar panel system and steel case that is protected very well from harmful radiation

Thatweirdinputlag wrote: ↑

26 Jan 2023, 02:48

God damnit. I don't know where to put the freaking solar panels lol! I wish I had the right kind of background knowledge to know what exactly is wrong with electricity that is causing this. Dear lord, everything that comes your laptops power supply is purely DC current it's not even what you find on your main AC line. What on earth is making it through that conversion!