I’m a medical student and use Anki daily for several hours. Months ago, I started using an 8BitDo Micro Bluetooth controller with the Contanki add-on to improve my workflow, and it’s been a huge quality-of-life upgrade. However, since then, I’ve occasionally returned to my Mac to find that it has crashed and restarted, showing the message: “Your computer was restarted because of a problem.”
Through testing, I’ve found that this only happens when the Bluetooth controller is connected. When I use Anki without the controller—even for several weeks at a time—the crash doesn’t occur. I even tried replacing the controller, thinking it might be a hardware issue, but the crash happened again the day after using the new one.
I’ve worked with Apple support extensively. I’ve reinstalled Anki, updated macOS, reset and wiped the computer, and even tested in Safe Mode. Apple ran diagnostics and found no hardware issues. Their next recommendation was to contact Anki’s developers.
Has anyone else experienced something similar? I’m posting here in hopes of finding a workaround or any insight into what might be causing this issue.
Could you please read this forum post and bug report to see if that issue appears to be the same one that you are seeing?
Could you also please confirm:
Your 8BitDo Micro controllers were connected via Bluetooth, not plugged into USB-C using a cable?
When you tested Safe Mode, all add-ons (including Contanki) were disabled? And, the problem still occurred?
Please also provide details about your computer: things like MacBook model, OS version, Anki version, etc.
Thank you for the reply. After reading through that post and reviewing the bug report, it seems to be a similar issue to what I am seeing. However, I only use my 8BitDo Micro controller via Bluetooth and have not had it plugged into my computer via USB-C. When I booted my Mac into Safe Mode, I was still able to use the add-ons within Anki, including Contanki, and the crash continued to occur. I have not tried using Anki itself in safe mode, but I suspect that it would function correctly because the only time I experience the crash is when I use the 8BitDo. Using Anki without the controller does not cause the crash.
System: MacBook Air M3, purchased in 2024
macOS version Sequoia 15.6.1 (the latest version confirmed by Apple)
Anki Version 25.07.5 (7172b2d2) / Python 3.13.5 Qt 6.9.1 Chromium 122
Is your 8BitDo Micro controller in “D” mode? (I’m wondering if the bug occurs in specific controller modes. But, I’m not sure if it is possible to use the 8BitDo Micro successfully in the other modes.)
I’m also wondering whether the bug occurs if you don’t use Anki but still connect and use the controller? (Perhaps the issue isn’t actually related to Anki or Qt?)
You might want to try downgrading Anki to 25.02.7 to see if that helps. If so, it might be a possible workaround.
(I’m wondering if the bug also occurs with the 8BitDo Zero 2 controller?)
It just crashed again. Here is the data from the Problem Details and System Configuration:
panic(cpu 3 caller 0xfffffe0022124b18): PAC failure from kernel with DA key while authing x16 at pc 0xfffffe0022012998, lr 0x36a87e0022016e88 (saved state: 0xfffffe8c924cf4f0)
Debugger message: panic
Zone info:
CORE 0 recently retired instr at 0xfffffe00219f1008@0xfffffe0023fb1ae0 ->0xfffffe002403d6ff@0xfffffe00241aeed0 ->0xfffffe00241b1d87
last started kext at 9498641486: com.apple.driver.AppleGameControllerPersonality 12.6.1 (addr 0xfffffe00204d33b0, size 1974)
** Stackshot Succeeded ** Bytes Traced 488326 (Uncompressed 1119328) **
My 8BitDo Micro controller is in the “D” mode. I believe it has to be in order to work with the MacBook, but I’m not 100% sure. I do not have the 8BitDo Zero 2 to try.
Do you happen to know what version of firmware is installed on your 8BitDo Micro?
If it isn’t running the latest Firmware v1.05, perhaps try updating to see if that might help?
(8BitDo Micro firmware update log from https://support.8bitdo.com , copied below for reference.)
Firmware v1.05
Added support for Switch 2.
Fixed auto power-off failure after 15 minutes of no activity via Bluetooth connection.
Firmware v1.04
Fixed the abnormal Bluetooth disconnection issue.
Fixed the issue where disabling sleep mode in the Ultimate Software was ineffective.
Firmware v1.03
Optimized the input delay issue of the Dinput mode when over Bluetooth connection.
Firmware v1.02
Factory firmware.
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Hello,
I updated the firmware for the 8BitDo Micro yesterday to v1.05 and my computer just crashed again today.
panic(cpu 2 caller 0xfffffe00206cca6c): Driver IOUserServer(com.apple.driverkit.AppleUserHIDDrivers-0x10000220a) has crashed too many times@IOUserServer.cpp :4279
Zone info:
CORE 0 recently retired instr at 0xfffffe0020039008
last started kext at 529088721: com.apple.filesystems.autofs 3.0 (addr 0xfffffe001f2a55c0, size 5927)
** Stackshot Succeeded ** Bytes Traced 516470 (Uncompressed 1173680) **
Thank you for the information. I added it the GitHub issue.
Unfortunately, I’m not sure if I have any more troubleshooting steps to suggest at the moment. (Other than possibly downgrading Anki to 25.02.7 to see if that might help, but I suspect that it probably won’t solve the issue.)
I did think of something else. The other user who was experiencing problems using an 8Bitdo Micro connected via USB-C found that switching to Bluetooth resolved their issues.
Perhaps if you were to try the opposite, unpair the Bluetooth connection and instead connect the controller to your computer using a USB-C cable, maybe the problem might stop? I know that it’s not that convenient of a workaround and something of a long shot, but perhaps it might help?
system
September 29, 2025, 9:17pm
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