{"id":1442,"date":"2015-02-10T13:39:48","date_gmt":"2015-02-10T05:39:48","guid":{"rendered":"http:\/\/boweihe.me\/?p=1442"},"modified":"2015-02-10T13:39:48","modified_gmt":"2015-02-10T05:39:48","slug":"work-in-progress-thinkpad-x220x230-full-hd-ips-modification","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=1442","title":{"rendered":"[Updated on Aug.29] ThinkPad X220\/X230 Full HD IPS modification"},"content":{"rendered":"<p><em>[CHINESE]<\/em> Reference of the detail\/ Source of this article:\u00a0<a href=\"http:\/\/forum.51nb.com\/viewthread.php?tid=1548345&amp;extra=&amp;highlight=&amp;page=1\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/forum.51nb.com\/viewthread.php?tid=1548345&amp;extra=&amp;highlight=&amp;page=1<\/a><br \/>\n<em>[CHINESE]<\/em> Forum page to buy this modification suite:\u00a0<a href=\"http:\/\/forum.51nb.com\/viewthread.php?tid=1548947&amp;extra=&amp;highlight=&amp;page=1\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/forum.51nb.com\/viewthread.php?tid=1548947&amp;extra=&amp;highlight=&amp;page=1<\/a><br \/>\n<em>[CHINESE]<\/em> FHD modification for T420\/430 series are also\u00a0available via a customed LVDS to eDP board:\u00a0<a href=\"http:\/\/forum.51nb.com\/thread-1552978-1-1.html\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/forum.51nb.com\/thread-1552978-1-1.html<\/a>\u00a0In plain terms, the EDID information must be coded\u00a0on the external LVDS to eDP\u00a0board so that no BIOS modification are needed.<br \/>\n<span style=\"color: #ff0000;\"><strong>Firstly, I am NOT the inventor of this method, he who achieved this modification did not give details about his modification in some way. I am only a customer who bought his modified adapter.<\/strong><\/span><br \/>\n<span style=\"color: #ff0000;\"><strong>I&#8217;m just trying to guess what he did to my motherboard and some of my descriptions below might be totally wrong and yes I will mark them specially.<\/strong><\/span><\/p>\n<hr \/>\n<p>&nbsp;<br \/>\nHere are the main(brief) ideas of the following modification:<\/p>\n<ul>\n<li>Renounce the video signals produced by original LVDP lane because it cannot support a screen resolution higher than 1440&#215;900<\/li>\n<li>Use the signal output on dock station to transfer data because it supports DisplayPort<\/li>\n<li>(I&#8217;m not quite sure about this part)&#8217;Hijack&#8217; the signal of original LVDS lane (<em>33 PANEL_BKLT_CTRL<\/em> and\u00a0<em>33 BACKLIGHT_ON<\/em> )\u00a0input so as to control the\u00a0backlight of\u00a0the new screen panel<\/li>\n<\/ul>\n<hr \/>\n<h1>An Overview of LVDS\/eDP\u00a0Adapter<\/h1>\n<p><a href=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/x230-edp.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-1577\" src=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/x230-edp-1024x768.jpg\" alt=\"x230 edp\" width=\"550\" height=\"413\" \/><\/a><\/p>\n<h1>Modifications on Motherboard(Video Signals, w\/o backlight control)<\/h1>\n<p><a href=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/IMG_0724.jpg.thumb_.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-1578\" src=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/IMG_0724.jpg.thumb_-1024x456.jpg\" alt=\"IMG_0724.jpg.thumb\" width=\"550\" height=\"245\" \/><\/a><\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n<blockquote><p><span style=\"color: #800080;\">\u00a0<strong><span style=\"color: #ff00ff;\">Yes, there is an applicable solution to modify(replace) the built-in LCD screen to Full HD resolution (1920 * 1080). Yes, it still supports one other external screen either\u00a0analogical(VGA) or digital(DisplayPort).<\/span><\/strong><\/span><\/p><\/blockquote>\n<p><span style=\"color: #ff0000;\"><strong>Firstly I must declare that I am not the inventor\u00a0of this solution, and I personally hold no responsibility to any thing that might happen on your laptop.<\/strong><\/span><br \/>\n<strong><span style=\"color: #0000ff;\"><a href=\"http:\/\/forum.51nb.com\/profile-uid-790463.html\" target=\"_blank\" rel=\"noopener noreferrer\"><em>kingkonglue<\/em><\/a> in <a href=\"http:\/\/forum.51nb.com\" target=\"_blank\" rel=\"noopener noreferrer\">forum.51nb.com<\/a> is the one who invented this solution, I take no credit for\u00a0the solution introduced below.<\/span><\/strong><br \/>\n<a href=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/IMG_2507.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-1446\" src=\"http:\/\/boweihe.me\/wp-content\/uploads\/2015\/02\/IMG_2507-1024x768.jpg\" alt=\"IMG_2507\" width=\"640\" height=\"480\" \/><\/a><\/p>\n<h1>Background Info<\/h1>\n<p>As almost everyone knows, the X220\/X230 series uses a one-lane(single channel) LVDP lane to transmit video signal to the build-in screen panel, which only supports a screen resolution \u00a0lower than 1440*900. This is the main obstacle\u00a0to install a FHD panel on the laptop.<br \/>\nThere are at least 3\u00a0solutions available to deal with this problem.<br \/>\n<a href=\"http:\/\/forum.51nb.com\/viewthread.php?tid=1343342&amp;extra=page%3D1&amp;highlight=&amp;page=1\" target=\"_blank\" rel=\"noopener noreferrer\">Leokim<\/a> is the first person to achieve this goal, he successfully modified his X220 with a Full HD panel (which seems to be a touchable screen toke apart\u00a0from a Dell XPS 12&#8221; series, LP125WF1). His solution is not quite clearly explained, what we know till now is the modified BIOS and signal\u00a0wire and the BIOS modification is hard for X230 series due to the encryption of UEFI BIOS.<br \/>\nThe second trial of such modification is done by\u00a0\u4e1c\u5927\u5e08(Dong Da-shi). Presumably he used a self-made \u00a0LVDS&#8211;&gt;EDP adapter to fit the screen panel , and added some signal wires to the original LVDP signal wire in order to support higher resolution. This solution has a chance to encounter signal interference because of the modified analogue signal wire(LVDS).<br \/>\nAnd I myself heard somehow there is another `shortcut` toward such modification through the interface of \u00a0dock. As we know there are two digital video output available through the external dock and hence we can\u00a0make use of one of them. However, problem remains on the backlight control of the panel.<\/p>\n<h1>Screen Panel<\/h1>\n<p>In 2014 there\u00a0are more\u00a0high resolution panels available for the 12.5&#8243; X series. After Dell XPS, ThinkPad X24o starts to use eDP video lane instead of LVDS for the sake of \u00a0FHD support. As is written above, filling the gap between LVDS and eDP is the key to our modification task and there exist at least two main problem on\u00a0the way of achievement.<br \/>\nBTW the model of screen panel that I used is\u00a0<span style=\"color: #ff6600;\">LP125WF2 SPB1<\/span> (I guess that all\u00a0`LP125WF2` series are compatible).<\/p>\n<h1>FHD Signal<\/h1>\n<p><em>WIP<\/em><\/p>\n<h1>Backlight Control<\/h1>\n<p><em>WIP<\/em><\/p>\n<h1><span style=\"color: #ff6600;\">Problems Remained<\/span><\/h1>\n<p>(Updated on Aug 29 2015)<br \/>\nAlthough we have successfully connected the FHD panel onto the mainboard, small problems still exists in everyday use. The following problems might occur:<\/p>\n<ul>\n<li><span style=\"color: #0000ff;\">A Higher Temperature on GPU\/CPU, especially when you attach a external screen.<\/span> \u00a0This is because that the original output is still alive, actually the system will recognize<strong> TWO<\/strong>\u00a0screen panels with the original one disabled partially. The same video signal will still be outputted to the original port. When you attach a 2nd screen (like a external monitor) the system will have to maintain the screen output of 3 panels actually.<\/li>\n<li><span style=\"color: #0000ff;\">Bugs on the Driver &#8211;&gt; 16-bit-like color depth (on X230 series; the X220 series are exempted)<\/span>. I was encountered with this trouble as many other people who holds the x230 laptop. \u00a0However, x220 series will not be affected if it uses a modified driver provided by the inventor of the adapter. This bug will cause a 16-bit-like color output on \u00a0the screen panel, such that the gradual change of one color will not be so smooth as it was. If anyone remember the 16-bit color depth on the earlier LCD panels, that&#8217;s the feel. The root of this bug lies in the <strong>display driver<\/strong>, but no solutions has been ever given till now.<\/li>\n<li><span style=\"color: #808080;\">Black Screen on the First Attach of External \u00a0Screen.<\/span> The earlier version of adapter (like what I owned) will encounter this bug, but it is reported solved by an upgrade to the chip on the adapter (on the hardware I mean).<\/li>\n<\/ul>\n<p><span style=\"color: #ff6600;\"><em>WORK IN PROGRESS. <\/em><\/span><br \/>\n<span style=\"color: #ff6600;\"><em>THIS ARTICLE WILL BE WRITTEN UP\u00a0IF I HAVE ANY SPARE TIME.<\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>[CHINESE] Reference of the detail\/ Source of this article:\u00a0http:\/\/forum.51nb.com\/viewthread.php?tid=1548345&amp;extra=&amp;highlight=&amp;page=1 [CHINESE] Forum page to buy this modification suite:\u00a0http:\/\/forum.51nb.com\/viewthread.php?tid=1548947&amp;extra=&amp;highlight=&amp;page=1 [CHINESE] FHD modification for T420\/430 series are also\u00a0available via a customed LVDS to eDP board:\u00a0http:\/\/forum.51nb.com\/thread-1552978-1-1.html\u00a0In plain terms, the EDID information must be coded\u00a0on the external LVDS to eDP\u00a0board so that no BIOS modification are needed. Firstly, I am [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[46,111,129],"class_list":["post-1442","post","type-post","status-publish","format-standard","hentry","category-technical","tag-fhd","tag-thinkpad","tag-x230"],"_links":{"self":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/1442","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1442"}],"version-history":[{"count":0,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=\/wp\/v2\/posts\/1442\/revisions"}],"wp:attachment":[{"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dayandcarrot.space\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}