{"id":1726,"date":"2025-09-30T03:22:06","date_gmt":"2025-09-30T03:22:06","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=1726"},"modified":"2025-09-30T03:22:07","modified_gmt":"2025-09-30T03:22:07","slug":"%e3%80%90linux%e3%80%91ubuntu-%e6%8b%a6%e6%88%aa%e5%b9%b6%e7%9b%91%e5%90%ac-power-button-%e7%9a%84%e5%85%b3%e6%9c%ba%e6%b6%88%e6%81%af","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=1726","title":{"rendered":"\u3010Linux\u3011Ubuntu \u62e6\u622a\u5e76\u76d1\u542c power button \u7684\u5173\u673a\u6d88\u606f"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u89e3\u51b3\u65b9\u6cd5<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>Instead, adding a single line to \/etc\/systemd\/logind.conf was enough to do the trick:\n#HandlePowerKey=poweroff\nHandlePowerKey=suspend\nNow, pressing the power button causes instant suspend.<\/code><\/pre>\n\n\n\n<p>\u4fee\u6539\/etc\/systemd\/logind.conf\u6587\u4ef6\uff0c\u627e\u5230HandlePowerKey\uff0c\u5e76\u4e14\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u51e0\u4e2a\u53c2\u6570\uff1a<\/p>\n\n\n\n<ul>\n<li>suspend \u7cfb\u7edf\u4f1a\u88ab\u6302\u8d77\uff0c\u5982\u679c\u6211\u7684\u8bbe\u5907\u7ec8\u7aef\u6709\u5c4f\u5e55\uff0c\u800c\u4e14\u88c5\u4e86\u76f8\u5e94\u7684\u684c\u9762\uff0c\u8fd8\u4f1a\u8fdb\u5165\u9501\u5c4f\u754c\u9762\uff1b<\/li>\n\n\n\n<li>ignore \u7535\u6e90\u6309\u952e\u7684\u6d88\u606f\u4f1a\u88ab\u5ffd\u7565\uff0c\u5373\u6211\u6309\u4e0b\u6309\u952e\u4e4b\u540e\u4ec0\u4e48\u4e8b\u60c5\u90fd\u6ca1\u6709\u53d1\u751f\uff1b<\/li>\n<\/ul>\n\n\n\n<p>\u76d1\u542c\u6309\u952e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>cat \/proc\/bus\/input\/devices\r<\/code><\/pre>\n\n\n\n<p>\u5f97\u5230\u5982\u4e0b\u7ed3\u679c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>I: Bus=0019 Vendor=0000 Product=0003 Version=0000\r\nN: Name=\"Sleep Button\"\r\nP: Phys=PNP0C0E\/button\/input0\r\nS: Sysfs=\/devices\/LNXSYSTM:00\/LNXSYBUS:00\/PNP0C0E:00\/input\/input0\r\nU: Uniq=\r\nH: Handlers=kbd event0 \r\nB: PROP=0\r\nB: EV=3\r\nB: KEY=4000 0 0\r\n\r\nI: Bus=0019 Vendor=0000 Product=0001 Version=0000\r\nN: Name=\"Power Button\"\r\nP: Phys=PNP0C0C\/button\/input0\r\nS: Sysfs=\/devices\/LNXSYSTM:00\/LNXSYBUS:00\/PNP0C0C:00\/input\/input1\r\nU: Uniq=\r\nH: Handlers=kbd event1 \r\nB: PROP=0\r\nB: EV=3\r\nB: KEY=10000000000000 0\r\n\r\nI: Bus=0019 Vendor=0000 Product=0001 Version=0000\r\nN: Name=\"Power Button\"\r\nP: Phys=LNXPWRBN\/button\/input0\r\nS: Sysfs=\/devices\/LNXSYSTM:00\/LNXPWRBN:00\/input\/input2\r\nU: Uniq=\r\nH: Handlers=kbd event2 \r\nB: PROP=0\r\nB: EV=3\r\nB: KEY=10000000000000 0\r<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\uff0c\u53ef\u80fd\u9700\u8981\u76d1\u542cevent1\u6216\u8005event2\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u7684\u4ee3\u7801\u76f4\u63a5\u76d1\u542c\u4e8b\u4ef6\u7684\u8f93\u5165\u4fe1\u606f\uff1b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;stdio.h>\r\n#include &lt;stdlib.h>\r\n#include &lt;unistd.h>\r\n#include &lt;string.h>\r\n#include &lt;sys\/types.h>\r\n#include &lt;fcntl.h>\r\n#include &lt;errno.h>\r\n#include &lt;time.h>\r\n#include &lt;linux\/input.h>\r\n \r\nstruct input_event event;\r\n \r\nint main(int argc, char **argv)\r\n{\r\n    char          name&#91;64];           \/* RATS: Use ok, but could be better *\/\r\n    char          buf&#91;256] = { 0, };  \/* RATS: Use ok *\/\r\n    unsigned char mask&#91;EV_MAX\/8 + 1]; \/* RATS: Use ok *\/\r\n    int           version;\r\n    int           fd = 0;\r\n    int           rc;\r\n    int           i, j;\r\n    char          *tmp;\r\n \r\n#define test_bit(bit) (mask&#91;(bit)\/8] &amp; (1 &lt;&lt; ((bit)%8)))\r\n \r\n    for (i = 0; i &lt; 32; i++) {\r\n        sprintf(name, \"\/dev\/input\/event%d\", i);\r\n        if ((fd = open(name, O_RDONLY, 0)) >= 0) {\r\n            ioctl(fd, EVIOCGVERSION, &amp;version);\r\n            ioctl(fd, EVIOCGNAME(sizeof(buf)), buf);\r\n            ioctl(fd, EVIOCGBIT(0, sizeof(mask)), mask);\r\n            printf(\"%s\\n\", name);\r\n            printf(\"    evdev version: %d.%d.%d\\n\",\r\n                   version >> 16, (version >> 8) &amp; 0xff, version &amp; 0xff);\r\n            printf(\"    name: %s\\n\", buf);\r\n            printf(\"    features:\");\r\n            for (j = 0; j &lt; EV_MAX; j++) {\r\n                if (test_bit(j)) {\r\n                    const char *type = \"unknown\";\r\n                    switch(j) {\r\n                    case EV_KEY: type = \"keys\/buttons\"; break;\r\n                    case EV_REL: type = \"relative\";     break;\r\n                    case EV_ABS: type = \"absolute\";     break;\r\n                    case EV_MSC: type = \"reserved\";     break;\r\n                    case EV_LED: type = \"leds\";         break;\r\n                    case EV_SND: type = \"sound\";        break;\r\n                    case EV_REP: type = \"repeat\";       break;\r\n                    case EV_FF:  type = \"feedback\";     break;\r\n                    }\r\n                    printf(\" %s\", type);\r\n                }\r\n            }\r\n            printf(\"\\n\");\r\n            close(fd);\r\n        }\r\n    }\r\n \r\n    if (argc > 1) {\r\n        sprintf(name, \"\/dev\/input\/event%d\", atoi(argv&#91;1]));\r\n        if ((fd = open(name, O_RDWR, 0)) >= 0) {\r\n            printf(\"%s: open, fd = %d\\n\", name, fd);\r\n            for (i = 0; i &lt; LED_MAX; i++) {\r\n                event.time.tv_sec  = time(0);\r\n                event.time.tv_usec = 0;\r\n                event.type         = EV_LED;\r\n                event.code         = i;\r\n                event.value        = 0;\r\n                write(fd, &amp;event, sizeof(event));\r\n            }\r\n            \r\n            while ((rc = read(fd, &amp;event, sizeof(event))) > 0) {\r\n                printf(\"%-24.24s.%06lu type 0x%04x; code 0x%04x;\"\r\n                       \" value 0x%08x; \",\r\n                       ctime(&amp;event.time.tv_sec),\r\n                       event.time.tv_usec,\r\n                       event.type, event.code, event.value);\r\n                switch (event.type) {\r\n                case EV_KEY:\r\n                    if (event.code > BTN_MISC) {\r\n                        printf(\"Button %d %s\",\r\n                               event.code &amp; 0xff,\r\n                               event.value ? \"press\" : \"release\");\r\n                    } else {\r\n                        printf(\"Key %d (0x%x) %s\",\r\n                               event.code &amp; 0xff,\r\n                               event.code &amp; 0xff,\r\n                               event.value ? \"press\" : \"release\");\r\n                               \r\n                    }\r\n                    break;\r\n                case EV_REL:\r\n                    switch (event.code) {\r\n                    case REL_X:      tmp = \"X\";       break;\r\n                    case REL_Y:      tmp = \"Y\";       break;\r\n                    case REL_HWHEEL: tmp = \"HWHEEL\";  break;\r\n                    case REL_DIAL:   tmp = \"DIAL\";    break;\r\n                    case REL_WHEEL:  tmp = \"WHEEL\";   break;\r\n                    case REL_MISC:   tmp = \"MISC\";    break;\r\n                    default:         tmp = \"UNKNOWN\"; break;\r\n                    }\r\n                    printf(\"Relative %s %d\", tmp, event.value);\r\n                    break;\r\n                case EV_ABS:\r\n                    switch (event.code) {\r\n                    case ABS_X:        tmp = \"X\";        break;\r\n                    case ABS_Y:        tmp = \"Y\";        break;\r\n                    case ABS_Z:        tmp = \"Z\";        break;\r\n                    case ABS_RX:       tmp = \"RX\";       break;\r\n                    case ABS_RY:       tmp = \"RY\";       break;\r\n                    case ABS_RZ:       tmp = \"RZ\";       break;\r\n                    case ABS_THROTTLE: tmp = \"THROTTLE\"; break;\r\n                    case ABS_RUDDER:   tmp = \"RUDDER\";   break;\r\n                    case ABS_WHEEL:    tmp = \"WHEEL\";    break;\r\n                    case ABS_GAS:      tmp = \"GAS\";      break;\r\n                    case ABS_BRAKE:    tmp = \"BRAKE\";    break;\r\n                    case ABS_HAT0X:    tmp = \"HAT0X\";    break;\r\n                    case ABS_HAT0Y:    tmp = \"HAT0Y\";    break;\r\n                    case ABS_HAT1X:    tmp = \"HAT1X\";    break;\r\n                    case ABS_HAT1Y:    tmp = \"HAT1Y\";    break;\r\n                    case ABS_HAT2X:    tmp = \"HAT2X\";    break;\r\n                    case ABS_HAT2Y:    tmp = \"HAT2Y\";    break;\r\n                    case ABS_HAT3X:    tmp = \"HAT3X\";    break;\r\n                    case ABS_HAT3Y:    tmp = \"HAT3Y\";    break;\r\n                    case ABS_PRESSURE: tmp = \"PRESSURE\"; break;\r\n                    case ABS_DISTANCE: tmp = \"DISTANCE\"; break;\r\n                    case ABS_TILT_X:   tmp = \"TILT_X\";   break;\r\n                    case ABS_TILT_Y:   tmp = \"TILT_Y\";   break;\r\n                    case ABS_MISC:     tmp = \"MISC\";     break;\r\n                    default:           tmp = \"UNKNOWN\";  break;\r\n                    }\r\n                    printf(\"Absolute %s %d\", tmp, event.value);\r\n                    break;\r\n                case EV_MSC: printf(\"Misc\"); break;\r\n                case EV_LED: printf(\"Led\");  break;\r\n                case EV_SND: printf(\"Snd\");  break;\r\n                case EV_REP: printf(\"Rep\");  break;\r\n                case EV_FF:  printf(\"FF\");   break;\r\n                    break;\r\n                }\r\n                printf(\"\\n\");\r\n            }\r\n            printf(\"rc = %d, (%s)\\n\", rc, strerror(errno));\r\n            close(fd);\r\n        }\r\n    }\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n\n\n\n<p>\u6309\u4e0b\u7535\u6e90\u6309\u952e\u4e4b\u540e\uff0c\u6700\u7ec8\u5b9e\u8df5\u53d1\u73b0\u662f<code>event2<\/code>\uff0c\u53ef\u4ee5\u76d1\u542c\u5230<code>key code<\/code>\u4ee5\u53ca\u6309\u952e\u7684\u52a8\u4f5c\uff1b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\t...\r\n\t\/dev\/input\/event2: open, fd = 3\r\nThu Mar 21 21:38:28 2019.801129 type 0x0001; code 0x0074; value 0x00000001; Key 116 (0x74) press\r\nThu Mar 21 21:38:28 2019.801129 type 0x0000; code 0x0000; value 0x00000000; \r\nThu Mar 21 21:38:28 2019.801159 type 0x0001; code 0x0074; value 0x00000000; Key 116 (0x74) release\r\nThu Mar 21 21:38:28 2019.801159 type 0x0000; code 0x0000; value 0x00000000; \r\nThu Mar 21 21:38:35 2019.038000 type 0x0001; code 0x0074; value 0x00000001; Key 116 (0x74) press\r\nThu Mar 21 21:38:35 2019.038000 type 0x0000; code 0x0000; value 0x00000000; \r\nThu Mar 21 21:38:35 2019.038028 type 0x0001; code 0x0074; value 0x00000000; Key 116 (0x74) release\r\nThu Mar 21 21:38:35 2019.038028 type 0x0000; code 0x0000; value 0x00000000; \r\n\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<div class=\"slide-text-bg2\">\n<h3>\u4e00\u3001\u89e3\u51b3\u65b9\u6cd5 \u4fee\u6539\/etc\/system<\/h3>\n<\/div>\n<div class=\"flex-btn-div\"><a href=\"http:\/\/www.recologypower.com:9080\/?p=1726\" class=\"btn1 flex-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[110],"tags":[],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1726"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1726"}],"version-history":[{"count":1,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1726\/revisions"}],"predecessor-version":[{"id":1727,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/1726\/revisions\/1727"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1726"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1726"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1726"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}