Help Library: Help Library: [LG Monitor] I connected the Mini DisplayPort cable but the screen is shaking

<div oncontextmenu="return false" onselectstart="return false" ondragstart="return false" >
	<html lang="en">
<head>
<meta>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width">
<style type="text/css">
@import url(https://fonts.googleapis.com/earlyaccess/notosanskr.css);
.tal {text-align:left !important;}
.ml-1 {margin-left:20px !important;}
.mt-1 {margin-top:20px !important;}
caption {overflow:hidden;width:1px;height:1px;margin:0;padding:0;font-size:1px;text-indent:-9999px;}
.content-service-view {font-family:'Noto Sans','Noto Sans KR',sans-serif;font-size:14px;line-height:1.6;}
.content-service-view .lg-red {color:#ec455a;}
.content-service-view strong {font-weight:600;}
.content-service-view p {margin:0 0 10px 0;padding:0;color:#333;}
.content-service-view .txt-idt {margin-left:1.14em !important;text-indent:-1.14em;}
.content-service-view .txt-idt * {text-indent:0;}
.content-service-view .iframe-wrap {margin-top:15px;}
.content-service-view .iframe-wrap iframe {width:640px;}
#contentsViewer .content-service-view .iframe-wrap iframe {height:360px !important;}
.content-service-view .info-subject {margin:0 0 15px;padding:0;font-size:20px;color:#444;line-height:1.5;}
#contentsViewer .content-service-view .info-subject {margin:0;padding:0 0 15px;}
.content-service-view .tit {position:relative;margin:60px 0 15px 0;padding:0;font-weight:600;font-size:22px;color:#444;line-height:1.5;}
.content-service-view .tit:before {content:"";overflow:hidden;position:absolute;left:0;top:-8px;width:25px;height:3px;background:#ec455a;}
.content-service-view .tit:first-child {margin-top:0;}
.content-service-view .info-subject+.tit {margin-top:40px;}
.content-service-view .sub-tit {position:relative;margin:60px 0 10px;padding:0 0 0 22px;font-size:17px;font-weight:500;line-height:1.5;}
.content-service-view .sub-tit:before {content:"";overflow:hidden;position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:#999 url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=CYfUaCPKDZkbFewB3OjoAA&amp;portalId=P1) no-repeat 4px 50%;background-size:10px;}
.content-service-view .sub-tit:first-child,
.content-service-view .tit+.sub-tit {margin-top:20px;}
.content-service-view .sub-tit .num {display:block;position:absolute;left:0;top:5px;width:17px;height:17px;text-align:center;border-radius:50%;font-size:11px;color:#fff;background:#999;}
.content-service-view .info-tit {margin:20px 0 0;padding-left:20px;font-size:15px;font-weight:500;background:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=81CJtgOoS8EBzjcpk4oCvA&amp;portalId=P1) no-repeat 0 5px;background-size:15px;}
.content-service-view .info-desc {margin:0.3em 0 0.5em;font-weight:500;color:#000;}
.content-service-view .info-desc.idt {margin-left:18px;text-indent:-18px;}
.content-service-view .img-only {margin:0 0 20px;}
.content-service-view .img-only img {max-width:100%;margin-bottom:15px;}
.content-service-view .img-only img:last-child {margin-bottom:0;}
.content-service-view .img-box {margin:15px 0;font-size:0;line-height:0;}
.content-service-view .img-box a {font-size:0;line-height:0;}
.content-service-view ol,
.content-service-view ul {margin:0 0 20px;padding:0;list-style:none;}
.content-service-view .cause-list {margin-top:0;}
.content-service-view .cause-list li {position:relative;margin-top:5px;padding-left:10px;line-height:1.5;}
.content-service-view .cause-list li:before {content:"";position:absolute;left:0;top:9px;overflow:hidden;width:3px;height:3px;border-radius:50%;background:#000;}
.content-service-view .bul-list {margin-top:15px;}
.content-service-view .bul-list li {position:relative;margin-top:7px;padding-left:10px;line-height:1.5;}
.content-service-view .bul-list li:before {content:"";position:absolute;left:0;top:9px;overflow:hidden;width:4px;height:4px;border-radius:50%;background:#ec455a;}
.content-service-view .link-list {margin-top:10px;}
.content-service-view .link-list li {display:table;box-sizing:border-box;width:100%;margin-top:10px;padding:8px 15px;border-radius:8px;box-shadow:2px 4px 16px 1px rgba(0,0,0,0.14);}
.content-service-view .link-list li .link-tit {display:table-cell;padding-right:5px;font-weight:600;vertical-align:middle;}
.content-service-view .link-list li .right {display:table-cell;text-align:right;}
.content-service-view .link-list li .ver {display:inline-block;margin-top:5px;color:#999;}
.content-service-view .link-list li .right a {margin-left:10px;}
.content-service-view .tbl-scroll {position:relative;overflow-x:auto;margin:0 0 15px;}
.content-service-view .tbl-scroll table {border-collapse:collapse;}
.content-service-view .tbl-scroll th,
.content-service-view .tbl-scroll td {padding:7px;border:1px solid #ccc;text-align:center;white-space:nowrap;vertical-align:middle;font-size:14px;line-height:1.6;}
.content-service-view .tbl-scroll th {font-size:15px;font-weight:600;background:#ddd;}
.content-service-view .tbl-scroll td p {margin-bottom:0;}
.content-service-view [class^="icon-"] {display:inline-block;overflow:hidden;width:14px;height:14px;text-indent:-5000px;margin-right:2px;vertical-align:-2px;background-image:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=e6Br68S0ipa4zVZ3ZhqQ&amp;portalId=P1);background-size:100%;}
.content-service-view .icon-down {background-image:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=cSrRVKKz6eHJNHzIRgzWA&amp;portalId=P1);}
.content-service-view [class^="btn0"] {display:inline-block;height:32px;padding:0 15px;border:1px solid #ec455a;border-radius:18px;text-decoration:none;font-size:14px;color:#ec455a;line-height:2;background:#fff;}
.content-service-view .btn01:hover {color:#fff;background:#ec455a;}
.content-service-view .link-btn {display:inline-block;height:32px;margin-top:5px;padding:0 15px;border:1px solid #d2d2d7;border-radius:18px;text-decoration:none;font-size:14px;color:#ec455a;line-height:2;background:#fff;}
.content-service-view .link-btn:hover {border-color:#ec455a;}
.content-service-view .link-txt {display:inline-block;text-decoration:underline;vertical-align:top;color:#ec455a;}
.content-service-view .tip-box {margin:15px 0 25px;padding:20px 22px 10px;border:2px solid #ddd;border-radius:8px;}
.content-service-view .tip-box .tip-tit {display:block;position:relative;padding-left:22px;font-size:15px !important;color:#222;}
.content-service-view .tip-box .tip-tit:before {content:"!";position:absolute;left:0;top:5px;width:16px;height:16px;border-radius:50%;text-align:center;font-size:11px;color:#fff;background:rgb(192, 192, 192);}
.content-service-view .tip-box p {margin-top:1em;color:#ec455a !important;}
.content-service-view .tip-box strong {font-size:14px;}
.content-service-view .tip-box&gt;p&gt;strong {color:#ec455a !important;}
.content-service-view .tip-box .con-view {margin:1em 0 15px;color:#333;}
.content-service-view .tip-box .bul-list {margin-bottom:15px;}
.content-service-view .txt-box {max-width:600px;}
.content-service-view .txt-box+.txt-box {margin-top:25px;}
.content-service-view .txt-box h4 {margin:0;padding:6px;text-align:center;font-size:18px;font-weight:600;background:#ddd;}
.content-service-view .txt-box ul {margin:0 7px;}
.content-service-view .txt-box li {display:flex;flex-wrap:wrap;padding:5px;border-bottom:1px solid #ddd;}
.content-service-view .txt-box li div {flex:1 1 50%;}
.content-service-view .txt-box li span {display:block;position:relative;padding-left:10px;font-size:16px;font-weight:600;}
.content-service-view .txt-box li span:before {content:"";position:absolute;left:0;top:10px;overflow:hidden;width:4px;height:4px;border-radius:50%;background:#000;}
.content-service-view .txt-box li p {margin:0;padding:0 0 0 10px;font-size:15px;}
.content-service-view .img-banner {margin-top:2em;}
.content-service-view .img-banner .mo {display:none;}
.content-service-view .img-banner .pc {display:block;position:relative;height:168px;margin-right:175px;background:#e9ecf1 url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=EYElckJimMpH2v7UAxQSvw&portalId=P1) no-repeat 0 50%;background-size:contain;}
.content-service-view .img-banner .pc a {position:absolute;top:0;right:-175px;}
.content-service-view .img-banner .pc a img {-webkit-box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);-moz-box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);box-shadow: 2px 2px 5px 0px rgba(118,118,118,1);}
.content-service-view .ir-hidden {position:absolute;margin:-1px;width:1px;height:1px;padding:0;border:0;white-space:nowrap;overflow:hidden;clip:rect(0, 0, 0, 0);clip-path:inset(50%);}
.content-service-view .mobile-txt {display:none;margin-top:-10px;padding-left:20px;color:#999;background:url(https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=Xw5rvb0UTyjfo1LwHfIJ7w&amp;portalId=P1) no-repeat 0 5px;background-size:15px;}
.content-service-view .help-txt {position:relative;margin:30px 0 0;padding:0 0 0 15px;font-size:13px;color:#666;}
.content-service-view .help-txt:before {content:'＊';position:absolute;left:0;top:-1px;font-size:12px;font-weight:600;color:#ec455a;}
@media screen and (max-width: 768px) {
.content-service-view img {max-width:100% !important;}
.content-service-view .mobile-txt {display:block;}
.content-service-view .iframe-wrap {position:relative;overflow:hidden;height:0;padding-top:30px;padding-bottom:56.25%;}
.content-service-view .iframe-wrap iframe {position:absolute;top:0;left:0;width:100%;height:90% !important;}
#contentsViewer .content-service-view .iframe-wrap iframe {height:90% !important;}
.content-service-view .iframe-wrap+.tit {margin-top:0;}
.content-service-view .img-banner .mo {display:block;}
.content-service-view .img-banner .mo img {width:100%;}
.content-service-view .img-banner .pc {display:none;}
}
</style>

</head>
<body>
    
<div class="content-service-view">
        
<h2 class="tit">Causes and Symptoms</h2>
        
<ul class="cause-list">
            
<li>I connected the 31MU97 model and the PC via Mini Displayport, but the screen is blank.</li>
            
<li>I connected the Mini DisplayPort cable, but there are screen/voice noises and screen flickering.</li>
        </ul>
        
<div class="img-only">
            <img alt="screen/voice noises and screen flickering." src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=NsbGnlTyjLZ8eJerWf7bw&amp;portalId=P1">
        </div>
        
<h2 class="tit">Try this</h2>
        <p>
            Check if the Mini DisplayPort cable included in the product package is used to connect the PC and the
            monitor.<br>
            Check if the [Real 4k 2k] label is attached to the Mini DisplayPort cable.</p>        
<div class="img-only">
            <img alt="Check if the [Real 4k 2k] label is attached to the Mini DisplayPort cable" src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=dGjdTq4Ghnqyp7khXbetrQ&amp;portalId=P1">
        </div>
        <p>
            The 31MU97 model is a high definition(4K) model with high signal frequencies, thus if you use the general
            cable sold in the market to connect the PC and the monitor, it might fail to output video and voice due to
            signal losses.<br>
            Make sure to use the Mini DisplayPort cable with the [Real 4k x 2k] label included in the product package to
            connect the PC and the monitor.
        </p>        <p class="help-txt">This guide was created for all models, so the images or content may be different from your
            product.</p>    </div>

</body>
</html>
	
</div>

Help Library

[LG Monitor] I connected the Mini DisplayPort cable but the screen is shaking

Contact