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修复 MagicBook 14（Ryzen5 3500U）在 Arch Linux 下亮度突然变 0 的问题

 2 years ago
source link: https://cyrusyip.org/post/2021/10/06/fix-magicbook-zero-brightness/
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修复 MagicBook 14（Ryzen5 3500U）在 Arch Linux 下亮度突然变 0 的问题

2021-10-06 约 180 字 预计阅读 1 分钟 13 次阅读

我的 MagicBook 14（Ryzen5 3500U）休眠/睡眠/插电/断电/开机后可能亮度降为 0。解决办法：启动时使用以下内核参数。

acpi_backlight=vendor

如果你用 GRUB，就修改 /etc/default/grub，在 GRUB_CMDLINE_LINUX_DEFAULT 加上内核参数，如果有多个参数就以空格分开。

GRUB_CMDLINE_LINUX_DEFAULT="loglevel=5 acpi_backlight=vendor"

然后刷新配置文件：

sudo grub-mkconfig -o /boot/grub/grub.cfg

参考资料：[SOLVED] Failed to start Load/Save Screen Backlight Brightness / Laptop Issues / Arch Linux Forums

延伸阅读：What do the kernel parameters acpi_osi=linux and acpi_backlight=vendor do? - Unix & Linux Stack Exchange


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