![]() ![]() You should try using Internet Recovery Mode (Command + Option + R) to try to disable the discrete GPU. Since Filevault cannot be unlocked you will not be able to boot into Single User Mode. If you recently upgraded the memory, then perhaps the memory is not compatible. The memory slot nearest the Bottom Case tends to fail more often due to cracked solder joints. You can try reseating the memory modules in case one of them is loose and you can try using just a single memory module in case one module or slot is bad. The Filevault issue is not the main problem although it may be another symptom. You can try accessing the drive using another Mac to see if the drive can be unlocked and mounted. Unless you have a Filevault Recovery Key from when you enabled Filevault you will not be able to unlock the Filevault if the encryption keys located on the drive are corrupted or damaged. It appears it is unable to unlock the Filevault due to an issue accessing the encryption keys. If there is anyone who had a similar problem and has a solution, please let me know! I would be very grateful. There were some upgrades a few months back – during one I could use CMD+V normally, after the next it didn‘t work again. Even in terminal I cannot reset it right. I have a feeling it has to do with the CMD key, although the right CMD also doesn‘t seem to work for the NVRAM reset. Also, when I try to reset the NVRAM using the combination with ALT+CMD+R+P it stopped working since then. In addition, a strange error occurred, where I can use the left CMD key with any other key, but V. When I looked at the activity monitor, it showed the system had used over 85 percent of the GPU, while the rest of the tasks running were using the leftover 15 percent. I installed El Capitan, which at first worked fine, upgraded to Sierra and the problems began. My Macbook couldn‘t handle it and I had to wipe the drive to make a fresh start. I made the mistake of upgrading the perfectly running OS X Sierra to High Sierra. I built in the board and my computer was faster than ever before.Īlright, this is the part where the downfall is happening: Last year I decided to buy a new logic board for my computer, since the graphic cards are glued to the boards in the 2011 models. ![]() ![]() I worked like this for almost two years – always had to reprogram after an update or NVRAM reset. Three years back the very common error of an overheated graphics card happened and I had to reprogram my Macbook to use the backup graphics card. I own a Macbook Pro Early 2011 since eight or nine years, which I bought factory new back then. So I have to tell a bit of the backstory to understand the origins of my problems: Macbook Pro Early 2011 OS X Reinstall OS X and NVRAM Problems Hi, I would be grateful if someone has experience or knowledge of such issues could take a look at the attached and discern what appears to be occurring here and a possible work around to disable the discrete card and default the machine to booting up using only the integrated card.įeel free to ask any further information you need and I am grateful in advance for any insight or possible solutions here. I feel my issue is relating to the file vault as that seems to be the first error returned from the screen attached. I can run a hardware diagnostic and this returns no issue. I can get to the spinning globe, connect internet and upon progress bar completion the machine hangs. I am also not able to enter either internet or system recovery mode. In each case above I am presented with the screen attached for a quick few seconds and then the machine continues to boot to the log in screen. Nor does entering via verbose mode (cmd v). Now I know the file vault is enabled and I need to disable that however I cannot do that as the combination cmd s also does not work. ![]() The issue here is I cannot get the machine to enter single user mode using cmd rs. I have gone through the steps of resetting PRAM and SMC. This isn't always the case however and I now need to disable the discrete card from the command line. I understand if I log in using the discrete and the machine gets as far as the white screen when user log in should complete and the machine restarts, the integrated card is defaulted at next boot. To actually log in however it is a lengthy cycle of restarts and reboots so the machine uses the integrated card after boot. I can use gfxCardStatus to switch the cards after logging in if I can get that far. I originally went through the graphics card recall for this machine however as expected the replacement discrete card has now failed again. As per the title I am attempting to disable the AMD discrete card so the machine uses only the integrated card. ![]()
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