-
Notifications
You must be signed in to change notification settings - Fork 45
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Sample.plist/SampleCustom.plist: possibly borked patch in UEFI/ReservedMemory
#2302
Comments
It's not for fixing backlight issues. It's for black screen "stuck" after waking up from hibernation. I am using that patch to get hibernation working on my Ice Lake laptop (not Lenovo). Same goes to many guys who have Lenovo/HP and etc. Only with that patch enabled our laptops could hibernate properly in 3/25 modes. |
I have a Lenovo T490 with a Whiskey Lake CPU and in my case it does what I described – no matter how it may work for other people. |
So it should be removed because it didn't work for you? ^_^ |
Tell me: how does a system go into hibernation if it can't even boot because this patch turns my system off before booting? I don't think this is the intended purpose of this patch – or is it? |
I don't know why it's happening to you, sorry. In my case system is working properly, once it goes to sleep, it goes then into hibernation and can be properly wake up from hibernation 3/25. Without that patch it would stuck on black (or screen with many graphical artifacts, I will add an example of that screen below). And yes, it's booting/rebooting fine with that patch enabled. AFAIK, @1Revenger1 have been using that patch for his Lenovo (might be wrong) and @savvamitrofanov was the one who did find that solution and added to OC, they might tell you more about that and share some links to their discussions in some of Lenovo github threads/issues (can't find it now). |
I was able to find that thread related to discovering that patch, you can check it there, @5T33Z0. Might be the issues with your set of booter quirks btw? |
@umka-petrovich Thanks for the follow-up. I will look into it. For now I don't plan to use Hibernation. |
@neresident Okay I've tested the Booter Quirks you mentioned:
I've changed Hibernate Mode to |
Should work properly. You can also try to use HibernationFixup.kext > you will need to add one boot-arg to enable auto-hibernation and that's it. Not sure, maybe there is something specific on Lenovo's, but that's how it's working on some of latest (Ice Lake) Ideapads. P.S. - you might need to disable some of "native" features like powernap and etc in pmset. |
Patch in question:
Background
I recently acquired a used ThinkPad T490 model. I had issues with the backlight turning off during boot occasionally. I thought this patch may help to address the issue.
But when I tried it, it crashed the system on boot. Not only that: instead of just crashing and power cycling, it actually caused the system to turn itself off which I haven't seen before. So maybe you should remove this one.
Greetings.
The text was updated successfully, but these errors were encountered: