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Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: SKYLANE
Date: March 15, 2020 06:58PM
I been suspecting failure of this AMD GPU (AMD Radeon HD 6770M) in my 2011 15" MBP (8,2 2.4GHz QC-i7 10.13.6) for quite some time. Been running it with a Dell S2716DGR 27" (2560 x 1440) monitor for couple years now, its been very reliable and well backed up knowing this issue was on horizon for my computer. It's been a great computer for over 8 years!

After months of warming exhibited by loud fan running from time to time over past year or two, numerous shutdowns and failed reboots started this morning. The MBP is now exhibiting behavior similar to my friend's 2011 MBP (same Machine) with failed AMD GPU. I recovered his machine by EFI modification and then removing the resistor from Circuit Board associated with the AMD GPU (per [realmacmods.com] ). Since I did not perform the jumper mod on his computer, I then recovered his hard drive after the modification with Disk Utility, then loaded a Fresh Install of 10.12 Sierra. (Apparently, the jumper mod is needed for High Sierra and for attempts I might make on my MBP to run Mojave or Catalina. For this MBP, going to Mojave or Catalina apparently does not work with AMD GPU in the loop - I don't think High Sierra does either.)

So, back to my MBP. I disconnected external screen, and MBP seems to reboot and run OK for now without the extended dual monitor setup. I am guessing because it is running on the INTEL HD 3000 right now, not sure what kind of activity switches it over to the AMD GPU.

I plan to take my Time Machine and migrate data over to my MacBook Air 7,2 2.2 GHz DC-i7 (Catalina). Or, I may migrate data over to my 2011 Mac Mini Server (2.0 GHZ QC-i7) on High Sierra (may attempt trying to get Catalina on it).

Mojave or Catalina mods per: [dosdude1.com]

I will update here how the MBP modification goes on a FU thread... If I get the Mini running on Catalina, will update FU with that as well...




Edited 5 time(s). Last edit at 03/15/2020 07:22PM by SKYLANE.
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: SKYLANE
Date: March 15, 2020 07:50PM
I am guessing that I can't just pull out the SSD and from the 2011 MBP and drop it into the 2011 Mac Mini and expect it to run, right?
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: space-time
Date: March 15, 2020 08:10PM
I have the same issue and I got up and running with this

[dosdude1.com]

However, that disables screen brightness and sleep. Apparently there is a much better solution, AA (Article Accelerator) had a slightly different method which does not affect sleep or screen brightness. Look for threads that I started on this topic. AA posted his method there.

My 2011 MBP 15" high resolution matte screen runs fine as it is, at some point I may try AA's fix to regain sleep and brightness.
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: SKYLANE
Date: March 15, 2020 09:54PM
Interesting. The matte screen. That’s the anti-glare screen, right? Which is what I have.


I will check the posts again that you cite for additional options to consider. I believe the jumper wire mod from RealMacMods fixes the sleep and brightness issue that you brought up as one solution. I will recheck...



Edited 2 time(s). Last edit at 03/15/2020 10:00PM by SKYLANE.
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: space-time
Date: March 15, 2020 09:58PM
Yes, high resolution matte screen. Mine has a different GPU though. AMD Radeon HD 6750M:


maybe 2.4 Ghz had better GPUs than 2.3?

Hardware Overview:

Model Name: MacBook Pro
Model Identifier: MacBookPro8,2
Processor Name: Intel Core i7
Processor Speed: 2.3 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 8 MB
Memory: 16 GB
Boot ROM Version: 87.0.0.0.0
SMC Version (system): 1.69f4
Serial Number (system): ...
Hardware UUID: B8837407-1448-57F9-9887-A4AC42D627AF
Sudden Motion Sensor:
State: Enabled


AMD Radeon HD 6750M:

Chipset Model: AMD Radeon HD 6750M
Type: GPU
Bus: PCIe
PCIe Lane Width: x8
VRAM (Dynamic, Max): 1024 MB
Vendor: AMD (0x1002)
Device ID: 0x6741
Revision ID: 0x0000
ROM Revision: 113-C0170L-573
VBIOS Version: 113-C0170K-007
EFI Driver Version: 01.00.573
Automatic Graphics Switching: Supported
gMux Version: 1.9.23

Intel HD Graphics 3000:

Chipset Model: Intel HD Graphics 3000
Type: GPU
Bus: Built-In
VRAM (Dynamic, Max): 512 MB
Vendor: Intel
Device ID: 0x0126
Revision ID: 0x0009
Automatic Graphics Switching: Supported
gMux Version: 1.9.23
Displays:
Color LCD:
Display Type: LCD
Resolution: 1680 x 1050 (Widescreen Super eXtended Graphics Array Plus)
UI Looks like: 1680 x 1050
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: SKYLANE
Date: March 15, 2020 11:17PM
Per this website: [everymac.com]

Excerpt:

[Apple] Quietly unveiled without a press release, the MacBook Pro "Core i7" 2.4 15-Inch (Late 2011) features a 32 nm "Sandy Bridge" 2.4 GHz Intel "Core i7" processor (2760QM), with four independent processor "cores" on a single silicon chip, a 6 MB shared level 3 cache, 4 GB of 1333 MHz DDR3 SDRAM (PC3-10600) installed in pairs (two 2 GB modules), a 750 GB Serial ATA (5400 RPM) hard drive, an 8X DL "SuperDrive", dual graphics processors -- an AMD Radeon HD 6770M with 1 GB of dedicated GDDR5 memory and an Intel HD Graphics 3000 graphics processor that shares 384 MB of memory with the system -- and an integrated FaceTime HD webcam.




Edited 1 time(s). Last edit at 03/16/2020 12:10AM by SKYLANE.
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: AllGold
Date: March 15, 2020 11:30PM
I had--still have, actually--that same machine (2011 2.4GHz hi-res matte screen). After the GPU failed, I replaced it with a 2012 2.3GHz hi-res matte. Although the clock speed is slightly slower, it uses a newer CPU and it is quite a bit faster, plus it runs so cool that the fan almost never runs (I'm sure it actually runs but you never hear it, unlike the 2011 machine) and the machine is almost always cool to the touch.



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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: Buzz
Date: March 16, 2020 02:17AM
AFAIK, the only substantive difference between the AMD Radeon HD 6750M and the 6770M, is the OS driver for it. IIRC, to run some stuff after the Lion intro (incl Late 2011 MBP?), you had to swap/add driver for AMD Radeon HD 6770M back into Snow Leopard installation to get SL to play nice w/ those "(then) newer" machines that had the 6770M.
==
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: SKYLANE
Date: March 16, 2020 03:39AM
Ref: [realmacmods.com]

Excerpt:

There is a known issue with performing this Mod on High Sierra. Apple changed the way the backlight is controlled on High Sierra, and upon waking from sleep the backlight will not turn on. After much research and logic board probing the issue has been identified as a Pulse Width Modulated signal to the backlight controller not being started. An additional Hardware Mod is required for High Sierra. This mod is explained in the steps below.
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Re: Looks like AMD GPU in my 2011 MBP finally bit the dust...
Posted by: space-time
Date: March 16, 2020 06:29AM
yes I am running High sierra and backlight controller does not work.

I think AA said he was running an older OS (maybe Sierra) and his backlight works.
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