reported bug https://bugs.freedesktop.org/show_bug.cgi?id=97971<br><br>If need more info, pls let me know<br><br><div><sign signid="0"><div style="color:#909090;font-family:Arial Narrow;font-size:12px"><br><br><br><br>------------------</div><div style="font-size:14px;font-family:Verdana;color:#000;"><div><div style="line-height: normal;"><div style="line-height: normal;"><div style="padding: 0px 25px; border-radius: 5px; border: 1px solid rgb(204, 204, 204); width: 340px; background: rgb(254, 254, 254);"><p><font size="4"><b>武汉深之度科技有限公司</b></font><br><span style="font-weight: bold;"><font size="1">Wuhan Deepin Technology Co., Ltd.</font></span></p><p><font size="4">　　杨波<font size="2">　　</font></font></p><p><font size="4"><font size="2">手机：18523158905</font><br></font></p><p><font size="2"><span style="color: rgb(128, 128, 128);"><font color="#000000">武汉：</font>武汉市光谷大道77号光谷金融港B18栋6楼 <br><font color="#333333">北京：</font>北京市海淀区知春路锦秋国际大厦B座501室<br><font color="#333333">上海：</font>上海市长宁区愚园路1258号15A01室</span></font></p></div><p><font size="2">官网：<a target="_blank" href="http://www.deepin.org/" style="outline: none; color: rgb(0, 96, 145);">www.deepin.org</a></font>　　官博：<a href="http://weibo.com/linuxdeepinnew" target="_blank" style="outline: none; color: rgb(0, 96, 145);">深度操作系统</a></p></div></div></div> </div></sign></div><div> </div><div><includetail><div> </div><div> </div><div style="font:Verdana normal 14px;color:#000;"><div style="FONT-SIZE: 12px;FONT-FAMILY: Arial Narrow;padding:2px 0 2px 0;">------------------ Original ------------------</div><div style="FONT-SIZE: 12px;background:#efefef;padding:8px;"><div id="menu_sender"><b>From: </b> "Jani Nikula"<jani.nikula@linux.intel.com>;</div><div><b>Date: </b> Thu, Sep 29, 2016 03:11 PM</div><div><b>To: </b> "杨波"<yangbo@deepin.com>; "daniel.vetter"<daniel.vetter@intel.com>; <wbr></div><div><b>Cc: </b> "dri-devel"<dri-devel@lists.freedesktop.org>; <wbr></div><div><b>Subject: </b> Re: EDID reading failed when using DVI-to-VGA connector in valleyview(device id: 0x0f31)</div></div><div> </div>On Thu, 29 Sep 2016, 杨波 <yangbo@deepin.com> wrote:<br>> Hi, everyone:<br>> Reading EDID failed when using DVI-to-VGA connector in valleyview(device id: 0x0f31). <br>> It is not G4X device，but still need to probe digital port. <br><br>I don't think the patch is acceptable, at least not without a proper<br>explanation and debugging of the problem. Please file a bug at [1], add<br>drm.debug=14 module parameter and attach dmesg on the bug.<br><br>BR,<br>Jani.<br><br>[1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel<br><br><br><br>><br>><br>><br>><br>><br>> ------------------<br>><br>> 武汉深之度科技有限公司<br>> Wuhan Deepin Technology Co., Ltd.<br>><br>> 　　杨波　　<br>><br>> 手机：18523158905<br>><br>><br>> 武汉：武汉市光谷大道77号光谷金融港B18栋6楼 <br>> 北京：北京市海淀区知春路锦秋国际大厦B座501室<br>> 上海：上海市长宁区愚园路1258号15A01室<br>><br>><br>> 官网：www.deepin.org　　官博：深度操作系统<br>> From e2dbb517239b5f03da7578e9e350013f8e9c2b3a Mon Sep 17 00:00:00 2001<br>> From: Yang Bo <yangbo@deepin.com><br>> Date: Thu, 29 Sep 2016 14:48:32 +0800<br>> Subject: [PATCH] EDID reading failure in 0x0f31<br>><br>> EDID reading failure is observed in valleyview(device id: 0x0f31)<br>> when using DVI-to-VGA connector.<br>><br>> Signed-off-by: Yang Bo <yangbo@deepin.com><br>> ---<br>> drivers/gpu/drm/i915/intel_crt.c | 2 +-<br>> 1 file changed, 1 insertion(+), 1 deletion(-)<br>><br>> diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c<br>> index 827b6ef..83662fa 100644<br>> --- a/drivers/gpu/drm/i915/intel_crt.c<br>> +++ b/drivers/gpu/drm/i915/intel_crt.c<br>> @@ -715,7 +715,7 @@ static int intel_crt_get_modes(struct drm_connector *connector)<br>> <br>> i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);<br>> ret = intel_crt_ddc_get_modes(connector, i2c);<br>> - if (ret || !IS_G4X(dev))<br>> + if (ret || !(IS_G4X(dev) || (dev->pdev->device == 0x0f31)))<br>> goto out;<br>> <br>> /* Try to probe digital port for output in DVI-I -> VGA mode. */<br><br>-- <br>Jani Nikula, Intel Open Source Technology Center</div></includetail></div>