朋友的 MacBook Pro 开机后每 3 分钟重启一次，重启后显示以下信息：
panic(cpu 0 caller 0xfffffff00e688560): userspace watchdog timeout: no successful checkins from dfrd in 180 seconds
dfrd has not exited since first loaded
service: dfrd, total successful checkins in 299 seconds: 11, last successful checkin: 180 seconds ago
service: remoted, total successful checkins in 290 seconds: 29, last successful checkin: 0 seconds ago
service: bridgeaudiod, total successful checkins in 299 seconds: 30, last successful checkin: 0 seconds ago
service: logd, total successful checkins in 299 seconds: 29, last successful checkin: 0 seconds ago
Debugger message: panic
Memory ID: 0x6
OS release type: User
OS version: 20P5060
macOS version: 21G651
Kernel version: Darwin Kernel Version 22.5.0: Thu Jun 8 17:10:34 PDT 2023; root:xnu-8796.121.3~5/RELEASE_ARM64_T8010
KernelCache UUID: 529696CF800037812B4D1FDE991978DD
Kernel UUID: 59AAE2A2-9BC4-3D6A-8F6B-DFBC7B9815ED
Boot session UUID: 450641F2-9D3D-43C5-9633-A3F34B8726A4
iBoot version: iBoot-8422.121.2
secure boot?: YES
roots installed: 0
x86 EFI Boot State: 0x16
x86 System State: 0x0
x86 Power State: 0x0
x86 Shutdown Cause: 0xec
x86 Previous Power Transitions: 0x70707060400
PCIeUp link state: 0x1614
macOS kernel slide: not available
Paniclog version: 14
Kernel slide: 0x0000000008028000
Kernel text base: 0xfffffff00f02c000
mach_absolute_time: 0x1ac57928f
Epoch Time: sec usec
Boot : 0x65eb1e84 0x0006aa01
Sleep : 0x00000000 0x00000000
Wake : 0x00000000 0x00000000
Calendar: 0x65eb1fab 0x0008ce79
Zone info:
Zone map: 0xffffffdc26248000 - 0xffffffe226248000
. VM : 0xffffffdc26248000 - 0xffffffdd0c8ac000
. RO : 0xffffffdd0c8ac000 - 0xffffffdd59578000
. GEN0 : 0xffffffdd59578000 - 0xffffffde3fbdc000
. GEN1 : 0xffffffde3fbdc000 - 0xffffffdf26240000
. GEN2 : 0xffffffdf26240000 - 0xffffffe00c8a8000
. GEN3 : 0xffffffe00c8a8000 - 0xffffffe0f2f10000
. DATA : 0xffffffe0f2f10000 - 0xffffffe226248000
Metadata: 0xffffffeac4de4000 - 0xffffffeac65e4000
Bitmaps : 0xffffffeac65e4000 - 0xffffffeac6714000
Extra : 0 - 0
TPIDRx_ELy = {1: 0xffffffdd596642f8 0: 0x0000000000000000 0ro: 0x000000016f7130e0 }
CORE 0 is the one that panicked. Check the full backtrace for details.
CORE 1: PC=0x00000001934cb2c4, LR=0x00000001935549f4, FP=0x000000016d67e500
Compressor Info: 0% of compressed pages limit (OK) and 0% of segments limit (OK) with 0 swapfiles and OK swap space
Total cpu_usage: 14310736
Thread task pri cpu_usage
0xffffffdd596642f8 watchdogd 97 0
0xffffffdd5a03eba8 launchd 37 0
0xffffffdd59652ba8 kernel_task 0 4028243
0xffffffdd59a7c2f8 kernel_task 0 4030123
Panicked task 0xffffffde3f3b6d00: 173 pages, 3 threads: pid 38: watchdogd
Panicked thread: 0xffffffdd596642f8, backtrace: 0xffffffec7eee71a0, tid: 912
lr: 0xfffffff00f21d868 fp: 0xffffffec7eee7210
lr: 0xfffffff00f33e014 fp: 0xffffffec7eee7280
lr: 0xfffffff00f33cfd4 fp: 0xffffffec7eee7360
lr: 0xfffffff00f1e15fc fp: 0xffffffec7eee7370
lr: 0xfffffff00f21d2a4 fp: 0xffffffec7eee7720
lr: 0xfffffff00f86d03c fp: 0xffffffec7eee7740
lr: 0xfffffff00e688560 fp: 0xffffffec7eee7760
lr: 0xfffffff00e687eec fp: 0xffffffec7eee7780
lr: 0xfffffff00e6870b8 fp: 0xffffffec7eee78a0
lr: 0xfffffff00f7fd8e4 fp: 0xffffffec7eee7a40
lr: 0xfffffff00f30d84c fp: 0xffffffec7eee7b60
lr: 0xfffffff00f222d5c fp: 0xffffffec7eee7be0
lr: 0xfffffff00f1fc830 fp: 0xffffffec7eee7c40
lr: 0xfffffff00f210a38 fp: 0xffffffec7eee7d80
lr: 0xfffffff00f334114 fp: 0xffffffec7eee7e30
lr: 0xfffffff00f33d3f4 fp: 0xffffffec7eee7f10
lr: 0xfffffff00f1e15fc fp: 0xffffffec7eee7f20
问题已经持续了几天，他不知道是什么原因造成的。没有外部设备连接到 MacBook。我尝试安装最新更新，但这花费的时间太长，因此在更新完成之前就重新启动了。我也在恢复模式下启动并尝试重新安装 macOS，但在完成之前就重新启动了。大约一年前，我更换了 MacBook Pro 的触控板。它工作正常一年了，现在仍然工作正常。
触摸条（键盘顶部的黑色长元素）保持空白，可能是它的缺陷。我还看到，正如dfrd转储消息中所说，与有关TouchBarServer。我尝试通过TouchBarServer每 3 分钟关闭（以便它重新启动）来修复它，如所述在这篇文章中，但这并没有阻止重启。
检查磁盘健康状况的内置工具（幸运的是运行时间不到 3 分钟）没有发现 SSD 存在任何问题。
编辑：我更换了触控条，现在 MacBook 无需重启即可再次正常工作。
答案1
我更换了触控条，现在 MacBook 可以正常工作，无需重启。