Too sensitive egpu Beast  

 

tolyaba1
(@tolyaba1)
Active Member
Joined:1 year  ago
Posts: 7
February 17, 2017 5:47 pm  

Hi

As I posted before I get TDR errors on my display driver but I guess I know what the problem is.

My egpu beast reacts to electricity signals. If I turn on/off my light switch in the room or I hear my fridge buzzing or if I touch hdmi cable or PSU with metal object it gives me diplsay driver crash. Well I guess egpu Beast is unstable on gen 2 speed ok..... but how can I fix this ? will UPS help ? I did the aluminum foil around the hdmi cable, helps a little but not 100%.

Or maybe I can make new cable somehow?


ReplyQuote
Plastixx
(@plastixx)
Trusted Member
Joined:1 year  ago
Posts: 80
February 17, 2017 6:03 pm  

I would suggest trying a different power supply. The one you have is obviously too sensitive to line fluctuation/noise.

 

FYI, I haven't had any instability issues with my beast and gen2.


ReplyQuote
Yukikaze
(@yukikaze)
Honorable Member Moderator
Joined:1 year  ago
Posts: 729
February 17, 2017 6:13 pm  

That sounds like some sort of grounding problem to me...Is the PSU grounded properly? If you are only using a two-pronged plug, or a socket with no ground, that might be a problem.

My eGPU Zoo - Link to my Implementations.

"Always listen to experts. They'll tell you what can't be done, and why. Then do it."- Robert A. Heinlein, "Time Enough for Love."


ReplyQuote
tolyaba1
(@tolyaba1)
Active Member
Joined:1 year  ago
Posts: 7
February 17, 2017 8:19 pm  

yep I'm in a student house....old one.... Grounding is not something they heard off I guess.

Tried 2 psus. They both make coil whine noise under load which was strange to me. ((((

How can I ground it ;DDD

 


ReplyQuote
Plastixx
(@plastixx)
Trusted Member
Joined:1 year  ago
Posts: 80
February 18, 2017 12:29 am  

The whining noise could be due to a low PWM duty-cycle because there isn't a load on 5V bus. Take a look at a generic ATX power supply schematic and you'll see the feedback for the PWM signal is taken from the 5V bus only. The supply can become unstable without a 5V load.

 

EDIT: I should say not all power supplies work like this. Some have a combine regulation scheme where feedback is taken from the 12V and 5V bus, but on older or cheaply designed supplies they it's more common that there's only 5V feedback.

 

Try putting a 10-Ohm 10W dummy load resistor on the 5V bus. You could even try just plugging in an old HDD if you have one.

Edited: 1 year  ago

ReplyQuote
liezger
(@liezger)
New Member
Joined:11 months  ago
Posts: 1
July 18, 2017 1:35 pm  

I have the same problem but managed to fix it without using any groundings, instead I used ferrite beads on both cables coming from the power supply and the EXP GDC v8.0.

ferrite Beads

Edited: 7 months  ago

3RYL, Bjorg and Yukikaze liked
ReplyQuote
favas0
(@favas0)
Eminent Member
Joined:12 months  ago
Posts: 28
September 17, 2017 7:01 pm  
Posted by: tolyaba1

Hi

As I posted before I get TDR errors on my display driver but I guess I know what the problem is.

My egpu beast reacts to electricity signals. If I turn on/off my light switch in the room or I hear my fridge buzzing or if I touch hdmi cable or PSU with metal object it gives me diplsay driver crash. Well I guess egpu Beast is unstable on gen 2 speed ok..... but how can I fix this ? will UPS help ? I did the aluminum foil around the hdmi cable, helps a little but not 100%.

Or maybe I can make new cable somehow?

 

Can you post pictures of the parts where you covered with aluminium foil ? . I also think i have emi/noise issue , but not as sensitive as yours. also i have isolated the PSU with its own wall socket. It is next to a router , does that create disturbance ? . I have random disconnects of egpu sometimes for hours its stable sometimes the opposite.

Edited: 8 months  ago

Laptop : Lenovo z410 ( i5-4200m GT740M 12GB 1TB-SSD) running Windows 10 Pro build 14393 // Hot-Plug Enabled BIOS
eGPU : Gigabyte GTX1070@4Gbps-mPCIe2 (EXP GDC 8.4d) + SilverStone sfx-500L PSU


ReplyQuote
Arbystrider
(@arbystrider)
New Member
Joined:7 months  ago
Posts: 3
October 29, 2017 4:11 am  

Most uninterruptible power supplies also condition the AC power coming out of them.

May be worth a try if you can find a used one for cheap.


ReplyQuote
favas0
(@favas0)
Eminent Member
Joined:12 months  ago
Posts: 28
October 29, 2017 8:23 am  
Posted by: Arbystrider

Most uninterruptible power supplies also condition the AC power coming out of them.

May be worth a try if you can find a used one for cheap.

No i bought a  APC UPS BX700U and it has sensitivity option ( set to high) it didnt work for me but we found out it is my Ordinary tubelight that is making the problems....i have posted about it here

Edited: 7 months  ago

Laptop : Lenovo z410 ( i5-4200m GT740M 12GB 1TB-SSD) running Windows 10 Pro build 14393 // Hot-Plug Enabled BIOS
eGPU : Gigabyte GTX1070@4Gbps-mPCIe2 (EXP GDC 8.4d) + SilverStone sfx-500L PSU


ReplyQuote
favas0
(@favas0)
Eminent Member
Joined:12 months  ago
Posts: 28
November 14, 2017 9:49 am  
Posted by: liezger

I have the same problem but managed to fix it without using any groundings, instead I used ferrite beads on both cables coming from the power supply and the EXP GDC v8.0.

ferrite Beads

What sizes are those ferrite (beads or clamps) 1/2 or 1/4 ? 

Laptop : Lenovo z410 ( i5-4200m GT740M 12GB 1TB-SSD) running Windows 10 Pro build 14393 // Hot-Plug Enabled BIOS
eGPU : Gigabyte GTX1070@4Gbps-mPCIe2 (EXP GDC 8.4d) + SilverStone sfx-500L PSU


ReplyQuote
Gh0s
 Gh0s
(@gh0s)
Active Member
Joined:6 months  ago
Posts: 9
December 15, 2017 4:07 pm  

i had the same problem i blamed it on the psu since it was 8 years old, so i bought a new psu the problem still persisted so i tried these ferrite beads, since they dont sell it here i found 2 old ps2 video audio cable and split it and used it and surprisingly it worked


tygpu liked
ReplyQuote
favas0
(@favas0)
Eminent Member
Joined:12 months  ago
Posts: 28
December 15, 2017 8:11 pm  
Posted by: Gh0s

i had the same problem i blamed it on the psu since it was 8 years old, so i bought a new psu the problem still persisted so i tried these ferrite beads, since they dont sell it here i found 2 old ps2 video audio cable and split it and used it and surprisingly it worked

What do you mean by split it ? Was it a clamped on and you just unclamped it ? 

Laptop : Lenovo z410 ( i5-4200m GT740M 12GB 1TB-SSD) running Windows 10 Pro build 14393 // Hot-Plug Enabled BIOS
eGPU : Gigabyte GTX1070@4Gbps-mPCIe2 (EXP GDC 8.4d) + SilverStone sfx-500L PSU


ReplyQuote
tygpu
(@tygpu)
Eminent Member
Joined:1 year  ago
Posts: 37
December 16, 2017 7:34 pm  

Which inner diameter do you use for the beads? Does the cables needs to be thightened in the bead (perfectly adjusted to the nearest millimetre) ? Thanks.

 


ReplyQuote
Gh0s
 Gh0s
(@gh0s)
Active Member
Joined:6 months  ago
Posts: 9
December 17, 2017 9:24 pm  

i split it in the classic way with screw and hammer, it fixed the crashes when i turn on/off the light but i still getting some random crashes, all left to try is to change the room which i will tell if it was a success or not


ReplyQuote
Gh0s
 Gh0s
(@gh0s)
Active Member
Joined:6 months  ago
Posts: 9
December 18, 2017 7:17 pm  

ok changed the room and put the psu plug in very isolated place and it still crashes, its so random sometimes it can last hours without a single crash while heavy gaming and sometimes and crashes out of nowhere for no reason while idol


ReplyQuote
Gh0s
 Gh0s
(@gh0s)
Active Member
Joined:6 months  ago
Posts: 9
December 28, 2017 6:54 pm  

so after going back to the same room i changed the power adapter and for some reason its far more stable than it was when it was connected directly to the wall idk how its not crashing anymore and its been like 2 weeks now


ReplyQuote
tygpu
(@tygpu)
Eminent Member
Joined:1 year  ago
Posts: 37
January 1, 2018 8:03 pm  
Posted by: Gh0s

so after going back to the same room i changed the power adapter and for some reason its far more stable than it was when it was connected directly to the wall idk how its not crashing anymore and its been like 2 weeks now

What are the differences between these adapters? (Surge protection? switch? other?)


ReplyQuote
xerman
(@xerman)
Active Member
Joined:5 months  ago
Posts: 9
February 6, 2018 11:51 am  

I'm experimenting the same sudden crashes problem. I will try with the ferrite beads that arrive today at home. I hope this will solve the random restarts I suffer.

I have tried everything else, I'm using an UPS and I have tried with two different PSU, both of good quality.


ReplyQuote