Moderators Jake Lo Posted August 31, 2015 Moderators Share Posted August 31, 2015 Make sure BIOS is at A13, Optimus disables after reboot if BIOS is at A12 Artifacts occur if Optimus is enabled and BIOS is higher than A13 Link to comment Share on other sites More sharing options...
Administrators Hervé Posted August 31, 2015 Administrators Share Posted August 31, 2015 The patched AICPUPM prevents KP on CPU power management. For the rest, it is self-explanatory. Link to comment Share on other sites More sharing options...
vsbalint Posted September 9, 2015 Author Share Posted September 9, 2015 Make sure BIOS is at A13, Optimus disables after reboot if BIOS is at A12 Artifacts occur if Optimus is enabled and BIOS is higher than A13 Hi Jake Lo I am already at A13, but Optimus gets set back after shut down by Yosemite. Interesting, it seems, after Windows shut down the setting remains untouched. I read on a Linux forum, that they found a solution for this... http://askubuntu.com/questions/338568/how-to-prevent-bumblebee-on-a-dell-e6530-disable-optimus-on-the-next-boot Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 9, 2015 Moderators Share Posted September 9, 2015 I haven't gotten this issue for my E6530 with Optimus running on Yosemite or Mavericks. Perhaps you could try the legacy kext Patched_10.7_AppleRTC.kext needed on older OS X like Mountain Lion. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted September 9, 2015 Administrators Share Posted September 9, 2015 The old Lion RTC patch should be considered ineffective on recent OS X versions such as Mavericks and/or Yosemite for which the patch is actually slightly different. See here for instance. Link to comment Share on other sites More sharing options...
vsbalint Posted September 20, 2015 Author Share Posted September 20, 2015 Dear Jake Lo and Hervé I am still fighting with my almost perfect OS X Yosemite 10.10.4 I still must boot with DSDT=0 -v -f settings, I am not able to progress to a perfect boot. Bluetooth is not working Often not every USB port gets recognized I have the issue with BIOS settings set to default, I haven't tried yet the above proposed patch of AppleRTC. I set manually in BIOS each time "Use Optimus" flag and OS X uses after HD Graphics 4000. No sleep, but maybe this is not possible at all? I am booting with Chameleon, followed the install method described by Jake Lo. I made an output with IORegistryExplorer, I hope it helps. https://www.dropbox.com/s/wlvjwt7n1l222vm/Balint%E2%80%99s%20MacBook%20Pro.ioreg?dl=0 I would be very thankful for your kind help Thank you very much Balint Link to comment Share on other sites More sharing options...
vsbalint Posted September 20, 2015 Author Share Posted September 20, 2015 Hi I have applied the patch to AppleRTC, but hasn't solved the BIOS reset issue. Optimus flag gets unchecked after each shut down on Mac OS. Interestingly, after Windows shut down the BIOS setting is kept. BIOS version is A13 as recommended. But this is a secondary issue, I would love to be able to have a correct boot with DSDT parameters. Thank you Balint Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted September 20, 2015 Moderators Share Posted September 20, 2015 run in terminal sudo touch /S*/L*/E* && sudo kextcache -Boot -U / What's the resolution of your display? Make sure to select the correct DSDT base on that. Link to comment Share on other sites More sharing options...
vsbalint Posted September 21, 2015 Author Share Posted September 21, 2015 Hi Jake Thank you for answer. What would the sudo touch /S*/L*/E* && sudo kextcache -Boot -U / solve? Boot without -f flag? Regarding resolution, it is 1920x1080. I don't use at the moment any DSDT file at all, only the default settings.. Link to comment Share on other sites More sharing options...
Administrators Hervé Posted September 21, 2015 Administrators Share Posted September 21, 2015 Those commands rebuild the kext cache/prelinked kernel. Link to comment Share on other sites More sharing options...
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