PaintArm Posted February 10, 2022 Share Posted February 10, 2022 (edited) So, I have mostly finished my Dell Inspiron 15 7537 with Big Sur and OC 0.7.8. I believe I have managed to successfully block my dGPU, a GT750m, from powering on but I am unsure how to confirm this and the battery drain is still awful compared to windows. I have correctly set up power management and mostly everything else on this laptop so any advice on how to confirm it is powered down would be great. Any files that may be necessary let me know and I can upload them. Thanks! Edited February 10, 2022 by PaintArm typo Quote Link to comment https://www.insanelymac.com/forum/topic/350763-how-to-confirm-the-dgpu-is-disabled/ Share on other sites More sharing options...
Slice Posted February 10, 2022 Share Posted February 10, 2022 I may propose to use GeforceSensors.kext and see the card temperature. If it powered on then it will be hot. https://github.com/CloverHackyColor/FakeSMC3_with_plugins 1 Quote Link to comment https://www.insanelymac.com/forum/topic/350763-how-to-confirm-the-dgpu-is-disabled/#findComment-2776615 Share on other sites More sharing options...
PaintArm Posted February 11, 2022 Author Share Posted February 11, 2022 17 hours ago, Slice said: I may propose to use GeforceSensors.kext and see the card temperature. If it powered on then it will be hot. https://github.com/CloverHackyColor/FakeSMC3_with_plugins Thanks for the advice, I tried but unfortunately the only way I can boot is to either disable the gpu using the the desktop method rendering it unidentifiable or using the current method. Neither of these are able to show the gpu in HWMonitor and Big Sur doesn't support it so can't boot without disabling. My query comes from when I was looking to disable and power off the gpu, the path in windows device manager is different to what I had to use to create the SSDT Device Manager - \_SB.PCI0.RP05.PXSX Used in SSDT - _SB_.PCI0.RP05.PEGP Now, if I use the device manager path the OS won't boot past the verbose screen. Using the SSDT path above (I found this by looking for RP05 which appear in the DSDT and SSDT-5. That path is linked to _OFF instruction) I can boot fine. In IOReg RP05 still shows up with IOPP attached to it but the PXSX@0 device with an IOName of #display doesn't anymore and the gpu doesn't show up in Hackintool under PCIe either. This draws me to the conclusion that the gpu is off but as my question states, I don't know how to prove this as my battery life is still poor. I hope this makes sense, I can upload screenshots/files if you like but I am confident it is off. Cheers Quote Link to comment https://www.insanelymac.com/forum/topic/350763-how-to-confirm-the-dgpu-is-disabled/#findComment-2776660 Share on other sites More sharing options...
Slice Posted February 11, 2022 Share Posted February 11, 2022 Clover has an ability to rename _SB.PCI0.RP05.PXSX to _SB.PCI0.RP05.PEGP for your SSDT be effective. As the battery life is poor then I can propose that the gpu is under power. I had this problem and resolved it with special SSDT. See here Dell Latitude E6430 full solution Quote Link to comment https://www.insanelymac.com/forum/topic/350763-how-to-confirm-the-dgpu-is-disabled/#findComment-2776666 Share on other sites More sharing options...
PaintArm Posted February 11, 2022 Author Share Posted February 11, 2022 (edited) Thanks for the swift reply. Since I last posted I have taken the laptop off charge and left it idling with Activity Monitor running and it is currently showing 71% after 1 hour 11 mins on battery with 1 hour 48 mins left whilst I've been using it for the last 20 mins so I am confident that the GPU is now off as before when idling I'd have been lucky to get 45mins to an hour. I believe this means my SSDT is functioning even without the rename. I use OpenCore so will be looking into that clover patch and converting it for use with OpenCore then seeing if that again improves the battery life. Thanks for your help @Slice! Much appreciated Edited February 11, 2022 by PaintArm typo Quote Link to comment https://www.insanelymac.com/forum/topic/350763-how-to-confirm-the-dgpu-is-disabled/#findComment-2776672 Share on other sites More sharing options...
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