ok, do you think it could hurt reinstalling the CUDA driver.. ?
or is this not a good idea ?
Got a tip for us?
Let us know
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iM 4,1-14,4 2011 iMac Graphics Card Upgrade
- Thread starter MichaelDT
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ok, do you think it could hurt reinstalling the CUDA driver.. ?
or is this not a good idea ?
thx , unfortunately reinstalling did not help.
CUDA drivers still not working so far..
I guess we then have to wait for Nvidia to release updates.. ?
I remember how Steve Jobs hated IBM because of their closed mainframe systems way back in the early 1980's. Now we have Apple that is just doing the same thing keeping the system closed. I have not used Apple OS in 3 months due to the Nvidia driver fight.
I use bootcamp with windows 10 and my nvidia gtx 1080 TI card. Now Apple has turned into what IBM used to be, a large company that wants to dictate to the users and the other companies.
What happened to the original Apple values and working with other companies to make Mac's great. Hey super rich Tim, time to take a look back at what made Apple, Apple.
If you want a open society why do you close down your system? Seems like double standards.
I use bootcamp with windows 10 and my nvidia gtx 1080 TI card. Now Apple has turned into what IBM used to be, a large company that wants to dictate to the users and the other companies.
What happened to the original Apple values and working with other companies to make Mac's great. Hey super rich Tim, time to take a look back at what made Apple, Apple.
If you want a open society why do you close down your system? Seems like double standards.
My recent graphics replacement was a GTX 675 in a 2011 i7 27" mac. My issue is brightness control. I have tried both "brightness slider" and "Shades". I like the control of Shades better, but it does not work if an app is fullscreen - only if it is "windowed". Am I the only one with this issue? Is there a better brightness control that these two? I'd love to try the hardware option, but I'm no where smart enough to try that.
I used a free app in app store it's great to control brightness called "QuickShade" Try it
THANKS! far as I can tell it works better than "slider" and "Shades" (which cost me a buck!)
The hardware option I describe in post #1354 really works like a charm. No heat issues and my machine looks and feels like it did when I had the stock Radeon card installed. Unfortunately I do admit its a challenging mod. I'm looking into developing an easier "plug and play" way for the group to accomplish it using 6-pin power connectors and a mechanical way of setting the PWM module (i.e. turn each pot so many turns and thus avoiding the need for an oscilloscope). More to come once I have worked this idea out.
I already ordered the parts for a plug&play version, i'll post a guide once its working. I'll try to route the wires out in the top went holes, so it can be adjusted after the screen is on.
K2000M works fine in my 21.5 2011 iMac. I'm using High Sierra. My cinebench score is 43.69. Tried installing the Nvidia drivers. The score with that is 46, however the whole system feel laggy, so i think it should be used with the default drivers. I run the cinebench multiple times and i don't see any heat issue, all fans spin at the lowest rpm.
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Having the pwm module dangle outside the back will be a little klugy and risk shorting to the case. I was thinking about desoldering the duty cycle (brightness adjust) pot from the PWM module and running wires from it inside the case to a small pot mounted behind the lock hole that is located at the center lower back of the imac. The idea would be one could insert a small regular jewelers screw driver through the lock hole to get adjustability.
Got itI was thinking of putting it in a plastic box of course
- keep us posted.
You would be a true hero for figuring that out. That would solve one of the two main issues!
[doublepost=1548527076][/doublepost]Also, for only people who read this board, I have 2 spare motherboards (one that is not working and one that is working but is DEP locked), two working core i7 processors, and 2 processor heat sinks for a reasonable cost and shipping (I have not figured a price for them yet, they can be parted out or bought in whole). The 2 core i7 processors and cpu heat sinks are fine. Like I said, of the 2 motherboards, one works fine but has a DEP lock I can't get rid of so it would only be good for parts. The other doesn't work but I am unsure why. All for a 27" 2011 iMac of course. I also have a non-working power supply. If you know how to de-soldier individual parts from motherboards and test them, this might be a good thing for you. Someone with the right skill could fix this stuff and use it as spare, but that requires skill I don't have for now.
I would also be willing to trade all of this for a mac mini (2009 or newer) so that I have something to play with.
I made one a few days ago, mine's need some trimming/sanding to fit but it works really well. I'll drop it here and maybe save you some time.
Please despite the GPU in the images, it's an HD7970m which I couldn't make it work...
I hope it helps someone!
![Nick [D]vB](/data/avatars/m/1132/1132239.jpg?1552018909){kind=avatar}
Maybe you could just measure the resistance across the pots once set to 13KHz / 50% duty?
Then people could set those values with a cheap MultiMeter instead of needing a scope.
You shouldn’t need to de-solder them but probably best measure without anything else connected.
It’s a real shame Apple didn’t use standard PWM fans in the iMacs, I was hoping
we could have hijacked one of the fan headers for software backlight control?
I can confirm the DosLabs DyingLight module works well in the iMac,
but the screen does blank out briefly as the brightness is adjusted,
maybe they could update the firmware to fix it but its no big deal.
You can just run the USB cable to an external port but I replaced the SD card reader instead
(the MiniPCIE doesn't have USB wired but you could do the same with the Bluetooth module)
and with the right cables there’s no need to cut wires or solder onto the iMac boards:
https://www.ebay.com/itm/DyingLight-Mk-II-Backlight-Control-Module/292891728547
https://www.ebay.com/itm/SD-CARD-RE...-2011-MC813-MC814-MD063-922-9850/303031911743
https://www.ebay.com/itm/6Pin-Male-...-Card-Power-Extension-Cable-20cm/201764196006
Here are the SD pinouts for the A1312 / A1311, good luck telling those wire colors apart !
I had a 3D printer for a year now and still learning a lot of 3D design.
It's something I made quick without to much measurement but with a little of sanding/trimming it fits very well and pulls a lot of air to the GPU. The file I uploaded has some updates but I left this installed for now. Let me know how it works for you in case you try it.
Unfortunately my original AMD card was dead and still waiting for a GTX765m to arrive so I couldn't test it but I'm pretty confident that it will help.
It's something I made quick without to much measurement but with a little of sanding/trimming it fits very well and pulls a lot of air to the GPU. The file I uploaded has some updates but I left this installed for now. Let me know how it works for you in case you try it.
Unfortunately my original AMD card was dead and still waiting for a GTX765m to arrive so I couldn't test it but I'm pretty confident that it will help.
This is amazing considering I never use the SD Card slot. Which pin on the 6 Pin connector are we tapping PWM from? (Post #1354 from @wlagarde looks like lower right pin on female side?)
Thanks. Also When the iMac i started with the dying light module, does it remember what brightness level it was at or keep brightness at 100%? Just curious because I don't think there is software for this module in Windows.
EDIT: after watching @dosdude1 video it appears to AppleBacklightControl natively. So in theory with boot camp drivers installed in windows, we will have back-light control.
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