LCD\u306e\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u8abf\u6574\u306e\u6709\u52b9\u5316\u3002kernel\u306e\u518d\u69cb\u7bc9\u304c\u5fc5\u8981\u306a\u6c17\u304c\u3057\u305f\u304c\u3001\u5fc5\u8981\u306a\u304b\u3063\u305f\u3002
\n\u7df4\u7fd2\u6a5f(No.3)\u304b\u3089\u306fOS\u306e\u30c9\u30e9\u30a4\u30d0\u3067\u8abf\u6574\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002
\nhttps:\/\/seesaawiki.jp\/lifewithslackzaurus_15_0\/d\/%a4%c8%a4%ea%a4%a2%a4%a8%a4%ba%a1%a2%c3%e6%b8%c5%a4%ce%b0%c2%a4%a4NotePC%28PC\/AT%b8%df%b4%b9%29%a4%f2%c7%e3%a4%c3%a4%bf<\/p>\n
linux LCD \u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u3001\u3067\u30b0\u30b0\u3063\u305f\uff1a
\nhttps:\/\/wiki.archlinux.jp\/index.php\/%E3%83%90%E3%83%83%E3%82%AF%E3%83%A9%E3%82%A4%E3%83%88#.E3.82.AB.E3.83.BC.E3.83.8D.E3.83.AB.E3.82.B3.E3.83.9E.E3.83.B3.E3.83.89.E3.83.A9.E3.82.A4.E3.83.B3.E3.82.AA.E3.83.97.E3.82.B7.E3.83.A7.E3.83.B3
\n\u30b9\u30af\u30ea\u30fc\u30f3\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u306e\u660e\u308b\u3055\u306f\u30d0\u30c3\u30af\u30e9\u30a4\u30c8 LED \u3084\u30ab\u30bd\u30fc\u30c9\u306e\u96fb\u529b\u30ec\u30d9\u30eb\u306e\u8a2d\u5b9a\u306b\u3088\u3063\u3066\u8abf\u6574\u3055\u308c\u307e\u3059\u3002\u96fb\u529b\u30ec\u30d9\u30eb\u306f\u5927\u62b5\u306e\u5834\u5408\u30d3\u30c7\u30aa\u7528\u306e ACPI \u30ab\u30fc\u30cd\u30eb\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u64cd\u4f5c\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u3053\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f sysfs \u306e\u30d5\u30a9\u30eb\u30c0 \/sys\/class\/backlight \u306b\u3088\u3063\u3066\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002
\n\u30d5\u30a9\u30eb\u30c0\u306e\u540d\u524d\u306f\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30ab\u30fc\u30c9\u306e\u30e2\u30c7\u30eb\u306b\u3088\u308a\u307e\u3059\u3002
\n\u3053\u306e\u4f8b\u3067\u306f\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u306f Intel \u306e\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30ab\u30fc\u30c9\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u3066\u3044\u307e\u3059\u3002ATI \u306e\u30ab\u30fc\u30c9\u3067\u306f acpi_video0 \u3068\u547c\u3070\u308c\u307e\u3059\u3002\u4e0b\u306e\u4f8b\u3067\u306f acpi_video0 \u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
$ ls -l \/sys\/class\/backlight\/
\n\u5408\u8a08 0
\nlrwxrwxrwx 1 root root 0 2\u6708 3 09:11 intel_backlight -> ..\/..\/devices\/pci0000:00\/0000:00:02.0\/drm\/card0\/card0-eDP-1\/intel_backlight<\/p>\n
$ cat \/proc\/modules | grep -i -E ‘acpi|video’
\nuvcvideo 118784 0 – Live 0x0000000000000000
\nvideobuf2_vmalloc 16384 1 uvcvideo, Live 0x0000000000000000
\nvideobuf2_memops 16384 1 videobuf2_vmalloc, Live 0x0000000000000000
\nvideobuf2_v4l2 36864 1 uvcvideo, Live 0x0000000000000000
\nvideobuf2_common 69632 4 uvcvideo,videobuf2_vmalloc,videobuf2_memops,videobuf2_v4l2, Live 0x0000000000000000
\nvideodev 262144 3 uvcvideo,videobuf2_v4l2,videobuf2_common, Live 0x0000000000000000
\nmc 57344 4 uvcvideo,videobuf2_v4l2,videobuf2_common,videodev, Live 0x0000000000000000
\nsnd_intel_sdw_acpi 16384 1 snd_intel_dspcfg, Live 0x0000000000000000
\nacpi_pad 24576 0 – Live 0x0000000000000000
\nvideo 49152 3 i915,dell_laptop,dell_wmi, Live 0x0000000000000000
\ni2c_core 102400 8 videodev,i915,drm_kms_helper,drm,psmouse,i2c_algo_bit,i2c_i801,i2c_smbus, Live 0x0000000000000000
\nacpi_thermal_rel 16384 1 int3400_thermal, Live 0x0000000000000000
\n(acpi_video\u306a\u3093\u3066\u5c45\u306a\u3044)<\/p>\n
$ ls -F \/lib\/modules\/5.15.19\/kernel\/drivers\/acpi\/
\nac.ko acpi_configfs.ko acpi_extlog.ko acpi_ipmi.ko acpi_pad.ko acpi_tad.ko apei\/
\nbattery.ko button.ko dptf\/ ec_sys.ko fan.ko nfit\/ platform_profile.ko
\nsbs.ko sbshc.ko thermal.ko video.ko
\n(acpi_video\u306f\u3082\u3046\u5c45\u308b\u3088\u3046\u3060\u3002\u305f\u3060\u306evideo\u304c\u305d\u3046\u306a\u3093\u3060\u308d\u3002acpi_pad\u3068\u304b\u3082\u3053\u3053\u306b\u5c45\u308b\u3057)<\/p>\n
$ ls -l \/sys\/class\/backlight\/intel_backlight\/
\n\u5408\u8a08 0
\n\\-r–r–r– 1 root root 4096 2\u6708 3 09:31 actual_brightness
\n\\-rw-r–r– 1 root root 4096 2\u6708 3 09:31 bl_power
\n\\-rw-r–r– 1 root root 4096 2\u6708 3 09:31 brightness
\nlrwxrwxrwx 1 root root 0 2\u6708 3 09:31 device -> ..\/..\/card0-eDP-1
\n\\-r–r–r– 1 root root 4096 2\u6708 3 09:31 max_brightness
\ndrwxr-xr-x 2 root root 0 2\u6708 3 09:31 power
\n\\-r–r–r– 1 root root 4096 2\u6708 3 09:31 scale
\nlrwxrwxrwx 1 root root 0 2\u6708 3 09:31 subsystem -> ..\/..\/..\/..\/..\/..\/..\/class\/backlight
\n\\-r–r–r– 1 root root 4096 2\u6708 3 09:31 type
\n\\-rw-r–r– 1 root root 4096 2\u6708 3 2023 uevent
\n(intel_backlight\u306f\u30d5\u30a1\u30a4\u30eb\u304b\u3068\u601d\u3063\u305f\u3089\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3060\u3063\u305f\u3002\u53c2\u8003\u3068\u306f\u9055\u3046\u304c\u4f7f\u3048\u308b\u3093\u3060\u308d)<\/p>\n
$ cat \/sys\/class\/backlight\/intel_backlight\/max_brightness
\n937
\n$ cat \/sys\/class\/backlight\/intel_backlight\/brightness
\n470
\n$ sudo sh -c ‘echo 900 > \/sys\/class\/backlight\/intel_backlight\/brightness’
\n(\u660e\u308b\u304f\u306a\u3063\u305f\u3002\u3053\u308c\u3092\u3001\/dev\/input\u8fba\u308a\u3092\u4f7f\u3063\u3066\u30ad\u30fc\u30dc\u30fc\u30c9\u306b\u5272\u308a\u632f\u308b?spitz\u307f\u305f\u3044\u306b?\u3001
\n\u30e2\u30c0\u30f3WM\u3092\u5165\u308c\u308b\u6c17\u306a\u3044\u3057\u3001\u4eca\u306f\u30e1\u30f3\u30c9\u30af\u30b5\u30a4\u306a)<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
LCD\u306e\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u8abf\u6574\u306e\u6709\u52b9\u5316\u3002kernel\u306e\u518d\u69cb\u7bc9\u304c\u5fc5\u8981\u306a\u6c17\u304c\u3057\u305f\u304c\u3001\u5fc5\u8981\u306a\u304b\u3063\u305f\u3002 \u7df4\u7fd2\u6a5f(No.3)\u304b\u3089\u306fOS\u306e\u30c9\u30e9\u30a4\u30d0\u3067\u8abf\u6574\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002 https:\/\/seesaawiki.jp\/lifewithsla […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-119","post","type-post","status-publish","format-standard","hentry","category-linux-system"],"_links":{"self":[{"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/posts\/119","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/comments?post=119"}],"version-history":[{"count":2,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/posts\/119\/revisions"}],"predecessor-version":[{"id":573,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/posts\/119\/revisions\/573"}],"wp:attachment":[{"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/media?parent=119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/categories?post=119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shirakawa.weblike.jp\/blog-page\/wp-json\/wp\/v2\/tags?post=119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}