{"id":17579,"date":"2022-09-03T09:02:10","date_gmt":"2022-09-03T00:02:10","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=17579"},"modified":"2022-09-03T09:02:10","modified_gmt":"2022-09-03T00:02:10","slug":"%e3%81%a0%e3%82%93%e3%81%a0%e3%82%93%e4%bd%bf%e3%81%84%e7%89%a9%e3%81%ab%e3%81%aa%e3%81%a3%e3%81%a6%e3%81%8d%e3%81%9frpi3%e3%81%a7rtsp%e3%82%92%e8%a6%8b%e3%82%8b","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=17579","title":{"rendered":"\u3060\u3093\u3060\u3093\u4f7f\u3044\u7269\u306b\u306a\u3063\u3066\u304d\u305f>RPi3\u3067RTSP\u3092\u898b\u308b"},"content":{"rendered":"\n

最終的なまとめ<\/a>を書いた時点では，「使い物にならない」でしたが，その後ほとんど問題なく，Raspberry Pi 3 Model B (RPi3)でも，Raspberry Pi 3 Model B+ (RPi3+)でも，電源をつなぐと問題なくフルスクリーンでVLCが動いて，RTSPの画像を表示するようになりました．一番つなぎやすいWi-Fiのプライオリティーを上げてから，Wi-Fiの接続が遅れてVLCがエラー吐くこともほとんどなくなりました．<\/p>\n\n\n\n

それで最終評価も，「使い物にならない」から，「若干問題があるが使える<\/a>」に格上げしました😓<\/p>\n\n\n\n

「若干問題」としましたが2つです．一つ目は，Desktopの設定もVLCの設定も再三再四確認したのですが，スクリーンセーバーが働いて，数分から10〜20分の間に画面が黒くなってしまうことです．<\/p>\n\n\n\n

二つ目は，見ているモニター側で入力を切り替えたり，その効かせないはずのスクリーンセーバーが効いたあと，マウスを動かそうが，キーボードをたたこうが，sshでつないで，VLCを終了して再起動しようが画面が復活することはなく，いったんpoweroffして1<\/a><\/sup>文字通り，poweroffコマンドを入力します．<\/span>から，電源をつなぎ直して再起動するしかありません．<\/p>\n\n\n\n

二つ目に関しては，どうもモニター側に問題がある，あるいはモニターとRPi3(+)との相性が存在するようで，特定のモニターで頻発します．ですから，選ぶ余地があれば，問題が発生しないモニターを使う事で，回避できます．<\/p>\n\n\n\n

「若干」が「一つ」に絞られましたが，これは，xdotoolを使う事でなんとかなりそうです．3分くらいでポインターを少し動かします．難点はその都度制御用のツールバーが一瞬表示されることです．<\/p>\n\n\n\n

ターミナルからスクリプトでxdotoolを動かすのは成功したので，自動で動くように仕込みたいと思います．<\/p>\n\n\n\n

追記: スクリーセーバー回避<\/h3>\n\n\n\n

その後，xdotoolでマウスを擬似的に動かしてスクリーンセーバーの機能を回避する方法について調べていたら，xsetを使って，<\/p>\n\n\n\n

xset -dpms ; xset s off<\/pre>\n\n\n\n
を実行するalternativeが見つかりました．試したところ今のところうまくいっています．ということは，KDEのセッティングがバグっているということでしょう．<\/p>\n\n\n\n
これをLoginスクリプトとして登録すればいけそうです．<\/p>\n","protected":false},"excerpt":{"rendered":"
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xset s off \u3092\u5b9f\u884c\u3059\u308balternative\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\uff0e\u8a66\u3057\u305f\u3068\u3053\u308d\u4eca\u306e\u3068\u3053\u308d\u3046\u307e\u304f\u3044\u3063\u3066\u3044\u307e\u3059\uff0e\u3068\u3044\u3046\u3053\u3068\u306f\uff0cKDE\u306e\u30bb\u30c3\u30c6\u30a3\u30f3\u30b0\u304c\u30d0\u30b0\u3063\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3057\u3087\u3046\uff0e \u3053\u308c\u3092Login\u30b9\u30af\u30ea\u30d7\u30c8\u3068\u3057\u3066\u767b\u9332\u3059\u308c\u3070\u3044\u3051\u305d\u3046\u3067\u3059\uff0e<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-17579","post","type-post","status-publish","format-standard","hentry","category-rasapberry-pi"],"publishpress_future_action":{"enabled":false,"date":"2026-06-13 14:55:18","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/17579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17579"}],"version-history":[{"count":0,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=\/wp\/v2\/posts\/17579\/revisions"}],"wp:attachment":[{"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}