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I've pulled my Xorg logs in case they might useful in providing
clues:<br>
<br>
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247); display: inline !important;
float: none;">More logs for clues:</span><br style="margin: 0px;
padding: 0px; color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247);">
<br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247); display: inline !important;
float: none;">Xorg.0.log:<span class="Apple-converted-space"> </span></span><a
class="postlink" href="http://pastebin.centos.org/8891/"
style="margin: 0px; padding: 0px; direction: ltr; unicode-bidi:
embed; text-decoration: none; color: rgb(93, 143, 189);
border-bottom-width: 1px; border-bottom-style: solid;
border-bottom-color: rgb(93, 143, 189); font-family: 'Lucida
Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.200000762939453px; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247);">http://pastebin.centos.org/8891/</a><br
style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247); display: inline !important;
float: none;">Xorg.0.log.old:<span class="Apple-converted-space"> </span></span><a
class="postlink" href="http://pastebin.centos.org/8896/"
style="margin: 0px; padding: 0px; direction: ltr; unicode-bidi:
embed; text-decoration: none; color: rgb(93, 143, 189);
border-bottom-width: 1px; border-bottom-style: solid;
border-bottom-color: rgb(93, 143, 189); font-family: 'Lucida
Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.200000762939453px; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247);">http://pastebin.centos.org/8896/</a><br
style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247); display: inline !important;
float: none;">Xorg.1.log:<span class="Apple-converted-space"> </span></span><a
class="postlink" href="http://pastebin.centos.org/8901/"
style="margin: 0px; padding: 0px; direction: ltr; unicode-bidi:
embed; text-decoration: none; color: rgb(93, 143, 189);
border-bottom-width: 1px; border-bottom-style: solid;
border-bottom-color: rgb(93, 143, 189); font-family: 'Lucida
Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.200000762939453px; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247);">http://pastebin.centos.org/8901/</a><br
style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<br style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica,
Arial, sans-serif; font-size: 13px; font-style: normal;
font-variant: normal; font-weight: normal; letter-spacing: normal;
line-height: 18.200000762939453px; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(236, 243,
247);">
<span style="color: rgb(0, 0, 0); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; font-size:
13px; font-style: normal; font-variant: normal; font-weight:
normal; letter-spacing: normal; line-height: 18.200000762939453px;
orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247); display: inline !important;
float: none;">Xorg.9.log:<span class="Apple-converted-space"> </span></span><a
class="postlink" href="http://pastebin.centos.org/8906/"
style="margin: 0px; padding: 0px; direction: ltr; unicode-bidi:
embed; text-decoration: none; color: rgb(93, 143, 189);
border-bottom-width: 1px; border-bottom-style: solid;
border-bottom-color: rgb(93, 143, 189); font-family: 'Lucida
Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.200000762939453px; orphans: auto; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(236, 243, 247);">http://pastebin.centos.org/8906/</a><br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 04/15/2014 05:14 PM, Denis Leclair
wrote:<br>
</div>
<blockquote cite="mid:534DA12D.7060002@theleclairs.ca" type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<br>
That's correct Alan. For other people's benefit in case you
haven't gone to my post on the CentOS forum, xrandr is not
returning anything for the VGA port or any other port for that
matter. The output is shown here:<br>
<br>
<span style="color: rgb(51, 51, 51); font-family: 'Lucida Grande',
'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;
font-size: 13px; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.1875px; orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(225, 235, 242); display: inline
!important; float: none;">Output from xrandr:</span><br
style="margin: 0px; padding: 0px; color: rgb(51, 51, 51);
font-family: 'Lucida Grande', 'Trebuchet MS', Verdana,
Helvetica, Arial, sans-serif; font-size: 13px; font-style:
normal; font-variant: normal; font-weight: normal;
letter-spacing: normal; line-height: 18.1875px; orphans: auto;
text-align: start; text-indent: 0px; text-transform: none;
white-space: normal; widows: auto; word-spacing: 0px;
-webkit-text-stroke-width: 0px; background-color: rgb(225, 235,
242);">
<dl class="codebox" style="margin: 0px; padding: 3px;
background-color: rgb(255, 255, 255); border: 1px solid rgb(201,
210, 216); font-size: 13px; color: rgb(51, 51, 51); font-family:
'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica, Arial,
sans-serif; font-style: normal; font-variant: normal;
font-weight: normal; letter-spacing: normal; line-height:
18.1875px; orphans: auto; text-align: start; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto;
word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<dt style="margin: 0px 0px 3px; padding: 0px; text-transform:
uppercase; border-bottom-width: 1px; border-bottom-style:
solid; border-bottom-color: rgb(204, 204, 204); font-size:
0.8em; font-weight: bold; display: block;">CODE:<span
class="Apple-converted-space"> </span><a
moz-do-not-send="true"
href="https://www.centos.org/forums/viewtopic.php?f=21&t=45930#"
onclick="selectCode(this); return false;" style="margin:
0px; padding: 0px; direction: ltr; unicode-bidi: embed;
color: rgb(16, 82, 137); text-decoration: none;">SELECT ALL</a></dt>
<dd style="margin: 0px; padding: 0px;"><code style="margin: 2px
0px; padding: 5px 0px 0px; overflow: auto; display: block;
height: auto; max-height: 200px; white-space: normal;
font-style: normal; font-variant: normal; font-weight:
normal; font-size: 0.9em; font-family: Monaco, 'Andale
Mono', 'Courier New', Courier, mono; line-height: 1.3em;
color: rgb(46, 139, 87);">[dleclair@dleclair-lptp
Downloads]$ sudo xrandr -q<br style="margin: 0px; padding:
0px;">
[sudo] password for dleclair:<span
class="Apple-converted-space"> </span><br style="margin:
0px; padding: 0px;">
xrandr: Failed to get size of gamma for output default<br
style="margin: 0px; padding: 0px;">
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum
1920 x 1080<br style="margin: 0px; padding: 0px;">
default connected 1920x1080+0+0 0mm x 0mm<br style="margin:
0px; padding: 0px;">
1920x1080 0.0*<span class="Apple-converted-space"> </span><br
style="margin: 0px; padding: 0px;">
[dleclair@dleclair-lptp Downloads]$<span
class="Apple-converted-space"> </span><br style="margin:
0px; padding: 0px;">
</code></dd>
</dl>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 04/15/14 4:10 PM, Alan Bartlett
wrote:<br>
</div>
<blockquote
cite="mid:CA+_WhHzfmNcxODMV_=c3O9+cjdi17RBJgA-biUeiGZ1TxB+F3Q@mail.gmail.com"
type="cite">
<pre wrap="">On 15 April 2014 21:09, Alan Bartlett <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:ajb@elrepo.org"><ajb@elrepo.org></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On 15 April 2014 20:41, Denis Leclair <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:denis@theleclairs.ca"><denis@theleclairs.ca></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I have CentOS 6.5 running on an HP EliteBook 840 G1 with kernel-ml. The
problem is, I'm not getting any detection of the external monitor that I
have plugged in to the VGA port. I'm not sure where to beging
troubleshooting this problem and I'm not finding a whole of advice online
either.
The details of what I get from xrandr as well as other system information
can be found on this post I added to the CentOS forums:
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://www.centos.org/forums/viewtopic.php?f=21&t=45930">https://www.centos.org/forums/viewtopic.php?f=21&t=45930</a>
I would appreciate any advice on things that I should check for or
additional reading I can do on the topic.
Thanks.
</pre>
</blockquote>
<pre wrap="">I'd suggest that you consider using xrandr.
Look to see what interfaces it recognises, by default. Plug in the
external monitor and use xrandr to activate the interface.
For example, with my Dell Latitude E5500 I see the following --
[Duo2 ~]$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 800, maximum 8192 x 8192
LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y
axis) 331mm x 207mm
1280x800 60.0*+ 59.8 59.9 40.0
1280x768 59.9 60.0
1024x768 60.0
800x600 60.3 56.2
848x480 60.0
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
TV1 disconnected (normal left inverted right x axis y axis)
[Duo2 ~]$
Alan.
</pre>
</blockquote>
<pre wrap="">Oops. Ignore that. I now see that you have already looked into using xrandr.
Alan.
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</pre>
</blockquote>
<br>
</blockquote>
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