I think your MBP has the Intel HD Graphics 3000 and AMD Radeon HD 6750M graphics chipsets. It could be that Mountain Lion is missing certain key bits that a game designed for Leopard is looking for. A lot of changes went on under the hood of OSX between Leopard and ML.GfxCardStatus is an open-source menu bar application for OS X that allows users of dual GPU MacBook Pros to monitor the status of, and switch between said GPUs.īuilding is easy. Open up gfxCardStatus.xcworkspace ( not gfxCardStatus.xcodeproj), hit ⌘B, and away you go. LicenseĬopyright (c) 2010-2020, Cody Krieger All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of gfxCardStatus nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CODY KRIEGER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE, DATA, OR PROFITS OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Some apps when they quit are switching to discrete graphics as they quit. If gfxCardSatus is set to dynamic switching, this is no problem, it will subsequently switch back to integrated mode as soon as the app is completely exited. The problem is that when the gfxCardStatus is trying to use “integrated-only” mode. This mode is tracked internally by setting the Dynamic-switching flag to off. Having that flag off applies to both integrated-only mode and discrete-only mode. When an app forces to discrete mode on exit, the dynamic switching flag is left unchanged (OFF) and the user returns to OSX permanently in discrete-only mode, rather then integrated-only mode. This is very undesirable and makes integrated-only mode unusable.Ī proper fix for this logic error should be to detect that when an app forces to discrete mode on exit while in integrated-only mode, the dynamic switching flag should be temporarily turned on, so that dynamic switching can switch back to integrated mode as soon as possible. Ideally, gfxCardStatus would also detect when it goes back to integrated, and then switch the dynamic-switching flag back off again when the user is hoping for integrated-only functionality. Yes its true that this would not be true 100% integrated-only, as some apps would briefly switch to discrete mode on exit. However what is happening now is really unusable as integrated-only mode often causes the entire machine to be switched to discrete-only mode permanently rather then just briefly on exit. I would fix this myself but I am unable to get the current release to build(see other ticket). I installed Mountain Lion on my Macbook Pro this afternoon and have discovered an issue with gfxCardStatus.īasically while the gfxCardStatus is running and the nVidia GPU activates through any program that requests it, the whole screen changes to an odd blue colour cast, the only way to describe it is like as if a wrong colour profile has been installed.
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