New Touchbar driver from 6.5.7 not working

[ZProLegend007]

Hi there,

I have a MacBook Pro 2018 with touchbar and since the touchbar driver was changed it hasn't been working. I left it for a while hoping it would be fixed but it still doesn't work. Sometimes it shows up briefly while booting but then turns off once the keyboard backlight turns on.

I use the Debian kernel which is based off this. Thought I'd let you know.

Similar to this issue here https://github.com/t2linux/T2-Ubuntu-Kernel/issues/56

Running tiny-dfr gives a glibc error stating it needs GLIBC_2.32, GLIBC_2.33 and GLIBC_2.34.

[AdityaGarg8]

Looks like you need to compile it manually on debian

[AdityaGarg8]

If you do not want the newer touchbar though, you can revert to the older driver by running sudo touchbar --switch and restarting

[DamianNiolet]

Hi there,

I have a MacBook Pro 2018 with touchbar and since the touchbar driver was changed it hasn't been working. I left it for a while hoping it would be fixed but it still doesn't work. Sometimes it shows up briefly while booting but then turns off once the keyboard backlight turns on.

I use the Debian kernel which is based off this. Thought I'd let you know.

Similar to this issue here #56

Running tiny-dfr gives a glibc error stating it needs GLIBC_2.32, GLIBC_2.33 and GLIBC_2.34.

Heya, Zac. I had to reinstall Ubuntu then do the following commands:

• sudo apt update
• sudo apt install linux-apfs
• sudo apt install tiny-dfr @AdityaGarg8 helped me with this on discord.

[AdityaGarg8]

Zac is using Debian, not Ubuntu. Also, linux-apfs is not related to tiny-dfr

[DamianNiolet]

Zac is using Debian, not Ubuntu. Also, linux-apfs is not related to tiny-dfr

Ahh, well, all I know is the devices didn’t show up with lsusb until I did install-apfs, but then the touchbar didn’t work until installing tiny-dfr.

[ZProLegend007]

I will mention that neither the new or old touchbar modes worked. I will try and manually compiling, thanks.

[AdityaGarg8]

I will mention that neither the new or old touchbar modes worked. I will try and manually compiling, thanks.

What's lsusb

[ZProLegend007]

Bus 007 Device 008: ID 05ac:8102 Apple, Inc. Touch Bar Backlight
Bus 007 Device 007: ID 05ac:8302 Apple, Inc. Touch Bar Display
Bus 007 Device 006: ID 05ac:027b Apple, Inc. Apple Internal Keyboard / Trackpad
Bus 007 Device 005: ID 05ac:8103 Apple, Inc. Headset
Bus 007 Device 004: ID 05ac:8262 Apple, Inc. Ambient Light Sensor
Bus 007 Device 003: ID 05ac:8514 Apple, Inc. FaceTime HD Camera (Built-in)
Bus 007 Device 002: ID 05ac:8233 Apple, Inc. Apple T2 Controller
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

It may be worth mentioning I have GLIBC_2.31 installed.

dmesg.txt

[AdityaGarg8]

sudo apt remove tiny-dfr
sudo apt install apple-touchbar
sudo modprobe apple-touchbar

[ZProLegend007]

z@FlintLockwood:~$ sudo apt install apple-touchbar
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following NEW packages will be installed:
  apple-touchbar
0 to upgrade, 1 to newly install, 0 to remove and 4 not to upgrade.
Need to get 35.4 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 https://adityagarg8.github.io/t2-ubuntu-repo ./ apple-touchbar 0.1.1 [35.4 kB]
Fetched 35.4 kB in 1s (52.3 kB/s)         
Selecting previously unselected package apple-touchbar.
(Reading database ... 296542 files and directories currently installed.)
Preparing to unpack .../apple-touchbar_0.1.1_amd64.deb ...
Unpacking apple-touchbar (0.1.1) ...
Setting up apple-touchbar (0.1.1) ...

Creating symlink /var/lib/dkms/apple-touchbar/0.1/source ->
                 /usr/src/apple-touchbar-0.1

DKMS: add completed.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area...
make -j8 KERNELRELEASE=6.6.1-t2...(bad exit status: 2)
Error! Bad return status for module build on kernel: 6.6.1-t2 (x86_64)
Consult /var/lib/dkms/apple-touchbar/0.1/build/make.log for more information.
chmod: cannot access '/usr/local/bin/touchbar': No such file or directory
chown: cannot access '/usr/local/bin/touchbar': No such file or directory
Run "sudo touchbar" to change the default Touch Bar mode
z@FlintLockwood:~$ sudo modprobe apple-touchbar
modprobe: FATAL: Module apple-touchbar not found in directory /lib/modules/6.6.1-t2

z@FlintLockwood:~$ cat /var/lib/dkms/apple-touchbar/0.1/build/make.log
DKMS make.log for apple-touchbar-0.1 for kernel 6.6.1-t2 (x86_64)
Wed 22 Nov 2023 12:22:55 AWST
make -C /lib/modules/6.6.1-t2/build M=/var/lib/dkms/apple-touchbar/0.1/build modules
make[1]: Entering directory '/usr/src/linux-headers-6.6.1-t2'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: gcc (Debian 13.2.0-6) 13.2.0
  You are using:           gcc (Ubuntu 9.4.0-1ubuntu1~20.04.2) 9.4.0
  CC [M]  /var/lib/dkms/apple-touchbar/0.1/build/apple-ibridge.o
  CC [M]  /var/lib/dkms/apple-touchbar/0.1/build/apple-touchbar.o
  CC [M]  /var/lib/dkms/apple-touchbar/0.1/build/hid-apple-magic-backlight.o
gcc: error: unrecognized command line option ‘-mharden-sls=all’
gcc: error: unrecognized command line option ‘-mharden-sls=all’
gcc: error: unrecognized command line option ‘-mharden-sls=all’
gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’
make[3]: *** [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/apple-ibridge.o] Error 1
make[3]: *** Waiting for unfinished jobs....
gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’
make[3]: *** [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/apple-touchbar.o] Error 1
gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’
make[3]: *** [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/hid-apple-magic-backlight.o] Error 1
make[2]: *** [/usr/src/linux-headers-6.6.1-t2/Makefile:1913: /var/lib/dkms/apple-touchbar/0.1/build] Error 2
make[1]: *** [Makefile:234: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.6.1-t2'
make: *** [Makefile:13: all] Error 2

[AdityaGarg8]

Hmm, remove apple-touchbar then. Try compiling tiny-dfr yourself

[ZProLegend007]

Tiny dfr is having issues compiling. dkms really doesn't like me.

z@FlintLockwood:~/tinydfr/tiny-dfr$ cargo build
    Updating crates.io index
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error: package `glib-sys v0.18.1` cannot be built because it requires rustc 1.70 or newer, while the currently active rustc version is 1.66.1
Either upgrade to rustc 1.70 or newer, or use
cargo update -p glib-sys@0.18.1 --precise ver
where `ver` is the latest version of `glib-sys` supporting rustc 1.66.1

[AdityaGarg8]

Install rust from here: https://www.rust-lang.org/tools/install

You need to close your terminal and open a new window after running this.

[ZProLegend007]

Hmm

  cargo:warning=`PKG_CONFIG_ALLOW_SYSTEM_CFLAGS="1" "pkg-config" "--libs" "--cflags" "pango" "pango >= 1.46"` did not exit successfully: exit status: 1
  error: could not find system library 'pango' required by the 'pango-sys' crate

  --- stderr
  Requested 'pango >= 1.46' but version of Pango is 1.44.7

warning: build failed, waiting for other jobs to finish...

[AdityaGarg8]

Thats probably the reason Ubuntu compiled tiny-dfr isn't working. You can try decreasing the version of pango in cargo.toml

[ZProLegend007]

There isn't a pango dependency shown in cargo.toml.

[AdityaGarg8]

Sorry I meant cairo

[ZProLegend007]

There is no cairo either. There is a cairo-rs but changing that version has no effect.

[AdityaGarg8]

Is it possible to get a newer version pango?

[ZProLegend007]

Thats what I'm trying to figure out.

[ZProLegend007]

I can't seem to find a solution... any other ideas?

[AdityaGarg8]

z@FlintLockwood:~$ sudo apt install apple-touchbar Reading package lists... Done Building dependency tree
Reading state information... Done The following NEW packages will be installed: apple-touchbar 0 to upgrade, 1 to newly install, 0 to remove and 4 not to upgrade. Need to get 35.4 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 https://adityagarg8.github.io/t2-ubuntu-repo ./ apple-touchbar 0.1.1 [35.4 kB] Fetched 35.4 kB in 1s (52.3 kB/s)
Selecting previously unselected package apple-touchbar. (Reading database ... 296542 files and directories currently installed.) Preparing to unpack .../apple-touchbar_0.1.1_amd64.deb ... Unpacking apple-touchbar (0.1.1) ... Setting up apple-touchbar (0.1.1) ...

Creating symlink /var/lib/dkms/apple-touchbar/0.1/source -> /usr/src/apple-touchbar-0.1

DKMS: add completed.

Kernel preparation unnecessary for this kernel. Skipping...

Building module: cleaning build area... make -j8 KERNELRELEASE=6.6.1-t2...(bad exit status: 2) Error! Bad return status for module build on kernel: 6.6.1-t2 (x86_64) Consult /var/lib/dkms/apple-touchbar/0.1/build/make.log for more information. chmod: cannot access '/usr/local/bin/touchbar': No such file or directory chown: cannot access '/usr/local/bin/touchbar': No such file or directory Run "sudo touchbar" to change the default Touch Bar mode z@FlintLockwood:~$ sudo modprobe apple-touchbar modprobe: FATAL: Module apple-touchbar not found in directory /lib/modules/6.6.1-t2

z@FlintLockwood:~$ cat /var/lib/dkms/apple-touchbar/0.1/build/make.log

what does this file show?

DKMS make.log for apple-touchbar-0.1 for kernel 6.6.1-t2 (x86_64) Wed 22 Nov 2023 12:22:55 AWST make -C /lib/modules/6.6.1-t2/build M=/var/lib/dkms/apple-touchbar/0.1/build modules make[1]: Entering directory '/usr/src/linux-headers-6.6.1-t2' warning: the compiler differs from the one used to build the kernel The kernel was built by: gcc (Debian 13.2.0-6) 13.2.0 You are using: gcc (Ubuntu 9.4.0-1ubuntu1~20.04.2) 9.4.0

Are you using Ubuntu or debian?

CC [M] /var/lib/dkms/apple-touchbar/0.1/build/apple-ibridge.o CC [M] /var/lib/dkms/apple-touchbar/0.1/build/apple-touchbar.o CC [M] /var/lib/dkms/apple-touchbar/0.1/build/hid-apple-magic-backlight.o gcc: error: unrecognized command line option ‘-mharden-sls=all’ gcc: error: unrecognized command line option ‘-mharden-sls=all’ gcc: error: unrecognized command line option ‘-mharden-sls=all’ gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’ make[3]: [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/apple-ibridge.o] Error 1 make[3]: Waiting for unfinished jobs.... gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’ make[3]: [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/apple-touchbar.o] Error 1 gcc: error: unrecognized command line option ‘-ftrivial-auto-var-init=zero’ make[3]: [scripts/Makefile.build:243: /var/lib/dkms/apple-touchbar/0.1/build/hid-apple-magic-backlight.o] Error 1 make[2]: [/usr/src/linux-headers-6.6.1-t2/Makefile:1913: /var/lib/dkms/apple-touchbar/0.1/build] Error 2 make[1]: [Makefile:234: __sub-make] Error 2 make[1]: Leaving directory '/usr/src/linux-headers-6.6.1-t2' make: *** [Makefile:13: all] Error 2

[ZProLegend007]

I'm using ZorinOS and Kali which are both Debian based. These outputs are all from ZorinOS.

And the output is the cat of that file.

[AdityaGarg8]

If you are using ZorinOS, you need to use kernel from T2-Ubuntu-Kernel, not T2-Debian-Kernel

[ZProLegend007]

After corrupting my old Zorin install I have re-installed with the Ubuntu kernel but the touchbar still doesn't work. Same glibc error. It's worth mentioning that kali doesn't have touchbar either.

[AdityaGarg8]

After corrupting my old Zorin install I have re-installed with the Ubuntu kernel but the touchbar still doesn't work. Same glibc error. It's worth mentioning that kali doesn't have touchbar either.

What Ubuntu kernel have you used? I cannot help much with Kali, you'll have to mess around with the rust code to support the older version of build tools in your Kali installation.

[ZProLegend007]

It is using the jammy kernel. Zorin is built on focal though... 20.04. It acts the same as the debian kernel. It is odd though how both kernels and OSs stopped working at the same time. It must be the same issue.

[AdityaGarg8]

You should use the focal kernel, it is available in the LTS 6.1.x release.

[AdityaGarg8]

Also remove tiny-dfr as the 6.1.x release has the older touchbar driver, that does not need tiny-dfr

[ZProLegend007]

Alright, I assume I should intall the LTS kernel script then. I will do so and check back.

[AdityaGarg8]

Use update_t2_kernel --remove-current with that script.

[ZProLegend007]

Finally got that done. After installing apple-touchbar the touchbar now works again, I will try installing the LTS kernel in Kali as well and see what happens. I believe once Zorin 17 is released it should have a newer GLIBC and then I can use the newer kernels.

[ZProLegend007]

I was also wondering @AdityaGarg8 if I could ask your advice for something rather off topic?

[AdityaGarg8]

I cannot guarantee I'll be able to answer anything off topic, but you can anyways ask

[ZProLegend007]

I have a fork of the brunch framework optimized for running chromeOS on macbooks. There are quite a few issues but the major one being audio. How would you go about adding support? As chromeOS uses alsa and detects the audio outputs fine. It can output out of the aux port with some tinkering but internal speakers (even though detected) don't work. Looking through a bunch of logs shows the audio server (CRAS - ChromeOS Audio Server, it's only alsa and this) has a segfault that causes it to crash when outputting to the internal speakers. This happens on all t2 Macs but not on older ones I believe. How would you go about troubleshooting it? Since theres no pulseaudio it makes things hard.

[AdityaGarg8]

I have a fork of the brunch framework optimized for running chromeOS on macbooks. There are quite a few issues but the major one being audio. How would you go about adding support? As chromeOS uses alsa and detects the audio outputs fine. It can output out of the aux port with some tinkering but internal speakers (even though detected) don't work. Looking through a bunch of logs shows the audio server (CRAS - ChromeOS Audio Server, it's only alsa and this) has a segfault that causes it to crash when outputting to the internal speakers. This happens on all t2 Macs but not on older ones I believe. How would you go about troubleshooting it? Since theres no pulseaudio it makes things hard.

I'm sorry, I don't have much idea in this aspect. You can ask in the discord server.

[ZProLegend007]

Update from kali, I know this is debian but I think you might be able to help. Running tiny-dfr now shows this.

thread 'main' panicked at src/main.rs:647:43:
called `Result::unwrap()` on an `Err` value: No touchbar device found
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[AdityaGarg8]

What's lsusb

Also, what fork have you used to compile. Did you add the udev rules and systemd service?

[AdityaGarg8]

Inactive issue. Kindly respond within 24hrs or shall be considered fixed.