Acer Nitro笔记本合盖休眠失败，sd-bright进程拒绝冻结问题求助

各位好，我最近碰到个头疼的问题：我的Acer Nitro笔记本合盖后没法正常进入休眠状态，查看系统日志后发现是sd-bright这个进程拒绝被冻结，直接卡住了休眠流程。

下面是我从日志里截取的关键内容：

systemd-logind[628]: Lid closed.

systemd-logind[628]: Suspending...

...

systemd-sleep[2396]: Entering sleep state 'suspend'...

kernel: PM: suspend entry (deep)

kernel: Filesystems sync: 0.004 seconds

kernel: Freezing user space processes

kernel: Freezing user space processes failed after 20.002 seconds (1 tasks refusing to freeze, wq_busy=0):

kernel: task:(sd-bright)     state:D stack:0     pid:2229  ppid:628    flags:0x00000006

kernel: Call Trace:

kernel:  <TASK>

kernel:  __schedule+0x2aa/0x610

kernel:  schedule+0x63/0x110

kernel:  schedule_preempt_disabled+0x15/0x30

kernel:  __mutex_lock.constprop.0+0x3f8/0x7a0

kernel:  __mutex_lock_slowpath+0x13/0x20

kernel:  mutex_lock+0x3c/0x50

kernel:  backlight_device_set_brightness+0x35/0x140

kernel:  brightness_store+0x75/0x90

kernel:  dev_attr_store+0x17/0x40

kernel:  sysfs_kf_write+0x3e/0x60

kernel:  kernfs_fop_write_iter+0x133/0x210

kernel:  vfs_write+0x251/0x410

kernel:  ksys_write+0x73/0x100

kernel:  __x64_sys_write+0x19/0x30

kernel:  do_syscall_64+0x5b/0x90

kernel:  ? __x64_sys_fcntl+0xba/0xe0

kernel:  ? exit_to_user_mode_prepare+0x30/0xb0

kernel:  ? syscall_exit_to_user_mode+0x29/0x50

kernel:  ? do_syscall_64+0x67/0x90

kernel:  ? do_user_addr_fault+0x1bb/0x620

kernel:  ? exit_to_user_mode_prepare+0x30/0xb0

kernel:  ? irqentry_exit_to_user_mode+0x9/0x20

kernel:  ? irqentry_exit+0x43/0x50

kernel:  ? exc_page_fault+0x91/0x1b0

kernel:  entry_SYSCALL_64_after_hwframe+0x72/0xdc

kernel: RIP: 0033:0x7f82d990ba1f

kernel: RSP: 002b:00007ffe7b9afc10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001

kernel: RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f82d990ba1f

kernel: RDX: 0000000000000004 RSI: 00007ffe7b9afcf0 RDI: 0000000000000004

kernel: RBP: 00007ffe7b9afcf0 R08: 0000000000000000 R09: 00007f82d99f6c80

kernel: R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004

kernel: R13: 0000561cdb4a95b0 R14: 0000000000000004 R15: 00007f82d99f2d00

kernel:  </TASK>

我自己试着排查了一下：

• 用systemctl命令查找和sd-bright相关的服务，结果什么都没找到
• 用dpkg -S sd-bright查询这个进程属于哪个软件包，也没有返回任何结果

我的系统环境是：

• 操作系统：Ubuntu 23.04
• 内核版本：6.2.0-32-generic

有没有大佬能帮忙分析下这个问题怎么解决呀？

备注：内容来源于stack exchange，提问作者Bram