Touchbar not working after suspend

[MoonPadUSer]

I am on a 15,4 and after being suspended once the touchbar is not working anymore.
The apple_ib_tb module still shows up in lsmod but it doesn't seem to work

[marcosfad]

Hi,
For that I added this small script:
https://github.com/marcosfad/mbp-ubuntu/blob/master/files/suspend/rmmod_tb.sh
Check out here:
https://github.com/marcosfad/mbp-ubuntu/blob/master/01_build_file_system.sh#L39
It supposed to remove the driver and added later again.

You may try this manually when the problem come up.

[reynaldliu]

mbp 16,1 same

[tpchuckles]

Any way to get this to run on lid close? might be a timing issue. (manually clicking "suspend" and then waiting for everything to go dark, then closing the lid, seems to work. just closing the lid means i won't get the touchbar once we're back up)

alternatively, any commands to get the touchbar back once it's gone? ("modprobe -r apple_ic_tb ; modprobe apple_ic_tb" doesn't seem to work. as though crashing the module means we can't restart it or something...)

[AdityaGarg8]

Bug has been fixed in the latest kernels

[lexkyiv]

@AdityaGarg8

The bug is still present, and there seems to be no way to fix it. I tried using ChatGPT and multiple different approaches, but the chat ultimately said that this issue is not fixable and no resolution is available. The keyboard backlight and Touch Bar stop working after the system wakes from suspension.

Kernel version: 6.18.1-1-t2-noble
MacBook Pro 2019 A2141

Could you please advise on which kernel version this was fixed in?

This issue makes any setup unusable because the Touch Bar has all the function buttons and you can't access them after closing the lid. The only option is to disable sleep entirely, but then the computer just discharges in your bag. Is any resolution available?

[AdityaGarg8]

@AdityaGarg8

The bug is still present, and there seems to be no way to fix it. I tried using ChatGPT and multiple different approaches, but the chat ultimately said that this issue is not fixable and no resolution is available. The keyboard backlight and Touch Bar stop working after the system wakes from suspension.

Kernel version: 6.18.1-1-t2-noble MacBook Pro 2019 A2141

Could you please advise on which kernel version this was fixed in?

This issue makes any setup unusable because the Touch Bar has all the function buttons and you can't access them after closing the lid. The only option is to disable sleep entirely, but then the computer just discharges in your bag. Is any resolution available?

It has been broken again after an update by Apple to T2's firmware :(

[AdityaGarg8]

Are you using tiny-dfr or normal touchbar?

[lexkyiv]

Are you using tiny-dfr or normal touchbar?

I'm not sure, but if I understand right, both are in use:

[AdityaGarg8]

With tiny-dfr, suspend is anyways broken. Try removing tiny-dfr, restart, then before suspending run sudo modprobe -r hid-appletb-kbd && sudo modprobe -r hid-appletb-bl and after resume run sudo modprobe hid-appletb-bl && sudo modprobe hid-appletb-kbd. Tell me if this works or not.