# sudo dmidecode -s system-product-name
MacBookPro11,5
我的问题:
- 亮度键(fn + f1、fn + f2)不会改变亮度。
我似乎能够改变亮度的唯一方法是编辑
/sys/class/backlight/radeon_bl0/brightness
然后重新启动。- 设置只是
--brightness
对比度xrandr
,不会改变背光强度。(这可能是预期的功能,xrandr
但不是我/任何人想要调整亮度的方式)
我的显示:
$ xrandr
Screen 0: minimum 320 x 200, current 2880 x 1800, maximum 16384 x 16384
eDP connected primary 2880x1800+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
2880x1800 59.99*+
1920x1200 59.88
1920x1080 59.96
1600x1200 59.87
1680x1050 59.95
1400x1050 59.98
1280x1024 59.89
1440x900 59.89
1280x960 59.94
1280x854 59.89
1280x800 59.81
1280x720 59.86
1152x768 59.78
1024x768 59.92
800x600 59.86
848x480 59.66
720x480 59.71
640x480 59.38
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
我的/etc/default/grub
文件
# If you change this file, run 'update-grub' afterwards to update
#
/boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'
GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
#GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
# Changed in order to get backlight control working
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force acpi_backlight=vendor"
GRUB_CMDLINE_LINUX=""
# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console
# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480
# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true
# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"
# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
我也尝试过acpi_backlight=native
,没有结果。
sudo update-grub
在对这个文件进行所有更改后,我运行并重新启动。
我的背光文件夹有两个目录:
- radeon_bl0/
- gmux_backlight/<- 据我所知,这个没有用过。
我该如何进一步调试它,并使我的背光控制正常工作?
答案1
猜测一下;在之前的版本(macbookpro 11.3)中,你必须运行
setpci -v -H1 -s 00:01.00 BRIDGE_CONTROL=0
也许这个也是一样的?
答案2
这是内核问题。您需要修补并重建内核来修复此问题。
我已经创建了一篇关于为 Fedora 修复此问题的博客文章。这里有两个需要应用的补丁链接:http://blog.samalik.com/fedora-24-on-macbook-pro-114-and-115-suspend-and-brightness-fix/
希望有所帮助。