Enable hibernate about surface-go-2-opencore HOT 9 CLOSED

The upgrade to Sonoma went great using the "Install macOS Sonoma" app to upgrade my Monterey install, no problems at all, and I can confirm that hibernate works in Sonoma as well!

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Howdy @lazd,
Thanks for your detailed explanation to get hibernation working.

In config.plist, Misc -> Boot -> HibernateMode = NVRAM
In config.plist, Misc -> Boot -> HibernateSkipsPicker = true

These changes made a big difference on my SGO2, as now the device at least wakes up. Then it skips the OC picker, shows a black screen for a few seconds, then the lower part of the display gets garbled and a few seconds later, the mouse cursor appears somewhere on the upper half of the screen and the Type Cover reacts to pressing the Fn key. But it never fully wakes up, it stays in this state, with the Type Cover seemingly connecting and disconnecting intermittently, as the keys' backlight goes on and off every few seconds.

Now I tried to reboot without the SD card inserted, disabling the DisableBDPROCHOT driver and a few other things, to no avail. Funny enough, the garbled part of the screen always looks exactly the same.

Please confirm that you're using the config_hard.plist with the modified UEFI options on your setup and please check which firmware is on your SGO2. Mine unfortunately updated to 1.0.27 a few weeks ago while rebooting into Windows before me noticing it. Maybe I need to downgrade the firmware on my device.

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As Hibernate is still not working for me after merging PR #4 and resetting the NVRAM, I'll reopen this issue.

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Very interesting, it sounds like it's actually working -- my screen shows garbled video (rectangular sections tiled across the whole screen), then bam, I'm exactly where I left off. Perhaps it's getting stuck for some reason, can you verify you ran the command above with the functions I defined?

I am using config-easy.plist, I have enabled DisablePROCHOT.efi, I'll get my firmware version shortly, but I boot into Windows all the time, so if you got an update, I probably did too.

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Here's my config.plist
config.plist.txt

And here's the output of sudo pmset -g

System-wide power settings:
 SleepDisabled		0
Currently in use:
 standby              1
 halfdim              1
 hibernatefile        /var/vm/sleepimage
 proximitywake        0
 powernap             0
 gpuswitch            2
 disksleep            10
 standbydelayhigh     86400
 sleep                1 (sleep prevented by sharingd)
 hibernatemode        25
 ttyskeepawake        1
 displaysleep         2
 tcpkeepalive         1
 highstandbythreshold 50
 lowpowermode         1
 standbydelaylow      10800

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Here's my BIOS information:

• System UEFI 1.0.23
• Intel Management Engine 11.8.92.4222
• System embeded controller 1.0.4.0
• Touch firmware 2D91.6426.0000.2000

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After checkout out the man page and looking at the scripts, I believe this is all that's needed to enable hibernate:

sudo pmset restoredefaults
sudo pmset -a hibernatemode 25

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Here's what my Surface looks like when waking up from hibernate. Sometimes it takes longer, sometimes it doesn't flicker garbled video, sometimes it doesn't flash a clean image before flicking garbled video.

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@lazd , I found the issue!
For Hibernate mode to work reliably, the framebuffer patches in config_easy.plist are required, as well as the AppleCpuPmCfgLock, AppleXcpmCfgLock and DisableIoMapper quirks in the Kernel quirks.
I replaced the config_hard.plist and config_easy.plist with one single config.plist, which makes it easier to maintain the repo as well.
In consequence, I removed RU.exe from the Tools and removed the UEFI hacks section in the readme.
As Hibernate works reliably now, I think we can close this issue.

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