<div dir="ltr">Not sure if this will help, but I'll put this out there anyway.<div><br></div><div>A fix I had to do with an Intel NUC running through a KVM switch wasn't sending correct edid information(Using display port running into converter to DVI). Symptom of the problem was every time I would switch between systems it would loose my 1920x1080 resolution.</div><div><br></div><div>I've never used Modelines and don't really understand them.</div><div><br></div><div>Not sure what this ESC Liva is using for a video card, don't see anything on the spec list. But the Intel NUC is using Haswell-ULT Integrated Graphics</div><div><br></div><div>Also the host OS for this is Linux Mint with Mythtv frontend package installed. The default install doesn't even use xorg.conf file</div><div><br></div><div><br></div><div>I'll include some links for the fix that worked for me -</div><div><br></div><div><a href="http://askubuntu.com/questions/144088/how-to-load-edid-firmware-with-drm-kms-helper">http://askubuntu.com/questions/144088/how-to-load-edid-firmware-with-drm-kms-helper</a><br></div><div><a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=da0df92b57311aa1b26a2a90599ed16e1e968b90">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=da0df92b57311aa1b26a2a90599ed16e1e968b90</a><br></div><div><a href="https://wiki.archlinux.org/index.php/kernel_mode_setting">https://wiki.archlinux.org/index.php/kernel_mode_setting</a> (this link shows how to determine the correct connection status)<br></div><div><br></div><div><pre style="border-top-width:1px;border-right-width:1px;border-left-width:1px;border-style:solid solid none;border-top-color:rgb(187,204,221);border-right-color:rgb(187,204,221);border-left-color:rgb(187,204,221);padding:1em 1em 0.8em;line-height:1.1em;overflow:auto;margin-bottom:0px;background-color:rgb(235,241,245)">for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n "${con#*/card?-}: "; cat $p; done</pre></div><div><br></div><div><div>DP-1: connected</div><div>HDMI-A-1: disconnected</div><div>HDMI-A-2: disconnected</div></div><div><br></div><div><div>cat /etc/modprobe.d/drm-kms-helper.conf</div><div>options drm_kms_helper edid_firmware=DP-1:edid/1920x1080.bin</div></div><div><br></div><div><div>cat /sys/module/drm_kms_helper/parameters/edid_firmware</div><div>DP-1:edid/1920x1080.bin</div></div><div><br></div><div><div>cat /etc/*release*</div><div>DISTRIB_ID=LinuxMint</div><div>DISTRIB_RELEASE=17.2</div><div>DISTRIB_CODENAME=rafaela</div><div>DISTRIB_DESCRIPTION="Linux Mint 17.2 Rafaela"</div><div>DISTRIB_ID=LinuxMint</div><div>DISTRIB_RELEASE=17.1</div><div>DISTRIB_CODENAME=rebecca</div><div>DISTRIB_DESCRIPTION="Linux Mint 17.1 Rebecca"</div><div>NAME="Ubuntu"</div><div>VERSION="14.04.2 LTS, Trusty Tahr"</div><div>ID=ubuntu</div><div>ID_LIKE=debian</div><div>PRETTY_NAME="Ubuntu 14.04.2 LTS"</div></div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 15, 2015 at 3:45 AM, Damian <span dir="ltr"><<a href="mailto:myth@surr.co.uk" target="_blank">myth@surr.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 14/07/2015 23:29, Hika van den Hoven wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hoi Damian,<div><div class="h5"><br>
<br>
Wednesday, July 15, 2015, 12:14:12 AM, you wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 14/07/2015 23:07, Damian wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 07/07/2015 09:46, Damian wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 06/07/2015 16:01, Michael T. Dean wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 07/06/2015 06:32 AM, Damian wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
The first thing I did was test a particularly bad scene from a<br>
program I watched a few nights ago. That would now play without any<br>
problems. So, I decided to watch a full film last night. It was<br>
pretty good throughout, but at about 3 points throughout the film,<br>
it had two or three of these 'black and searching' screens, then<br>
after a couple of seconds it pops back up having found the<br>
resolution again (switching between 1920x1080 and 1919x1080).<br>
</blockquote>
<br>
The fact that the annoying mode is 1 pixel less than your<br>
normal/desired mode leads me to assume that this may be related to<br>
the Window Manager you're using "scaling away" some 1-pixel-wide<br>
auto-hidden bar on the side of your screen every once in a while.<br>
I'd guess it's one of those fancy, compositing Window Managers. That<br>
said, if I'm correct, it won't help you fix the issue with your<br>
projector disliking mode changes (and/or prevent mode changes), but<br>
it may help find ways to avoid the changes (even it means just<br>
switching to a different,<br>
less-fancy-but-much-better-for-MythTV-type-usage Window Manager).<br>
<br>
Note, too, that MythTV will only change the mode if you enable:<br>
<br>
Separate video modes for GUI and TV playback<br>
Switch X Window video modes for TV. Requires "xrandr" support.<br>
<br>
and set the appropriate related settings. So, if your mode is<br>
changing and you have that disabled, it's not MythTV that's doing<br>
the changing.<br>
<br>
Mike<br>
</blockquote>
<br>
I fixed it!<br>
<br>
I too was thinking that it must be something to do with the window<br>
manager or something, but I'm using XFCE, the default WM that comes<br>
with Mythbuntu.<br>
<br>
Then I remembered that I edited the DPI setting to make everything a<br>
bit bigger on screen.<br>
<br>
I had it set to 100, which must have resulted in things not quite<br>
fitting to 1920x1080 right. So, it was kind of flickering between<br>
1920 and 1919 resolution.<br>
<br>
I'm not quite sure why this was only happening on scene changes, but<br>
don't really care as it's fixed now :-) I've even deleted the xorg<br>
file (why had been the only thing that had made it at all bearable)<br>
and all is still good.<br>
<br>
Thanks for the help everyone.<br>
<br>
Is there any other way to make everything a bit bigger on screen<br>
without messing with the DPI? I've increased the default font size<br>
and the height of the default mythbutu/xfce panel, but some things<br>
are still too small.<br>
<br>
Thanks again,<br>
Damian<br>
</blockquote>
Here's part of the output of ... xrandr -q --verbose<br>
<br>
1920x1080 (0xb9) 172.8MHz -HSync +VSync *current<br>
h: width 1920 start 2040 end 2248 total 2576 skew 0<br>
clock 67.1KHz<br>
v: height 1080 start 1081 end 1084 total 1118 clock 60.0Hz<br>
1920x1080 (0xba) 148.5MHz +HSync +VSync<br>
h: width 1920 start 2008 end 2052 total 2200 skew 0<br>
clock 67.5KHz<br>
v: height 1080 start 1084 end 1089 total 1125 clock 60.0Hz<br>
1920x1080 (0xbb) 148.5MHz +HSync +VSync<br>
h: width 1920 start 2448 end 2492 total 2640 skew 0<br>
clock 56.2KHz<br>
v: height 1080 start 1084 end 1089 total 1125 clock 50.0Hz<br>
1920x1080 (0xbc) 148.4MHz +HSync +VSync<br>
h: width 1920 start 2008 end 2052 total 2200 skew 0<br>
clock 67.4KHz<br>
v: height 1080 start 1084 end 1089 total 1125 clock 59.9Hz<br>
1920x1080i (0xbd) 74.2MHz +HSync +VSync Interlace<br>
h: width 1920 start 2008 end 2052 total 2200 skew 0<br>
clock 33.8KHz<br>
v: height 1080 start 1084 end 1094 total 1125 clock 60.1Hz<br>
1920x1080i (0xbe) 74.2MHz +HSync +VSync Interlace<br>
h: width 1920 start 2448 end 2492 total 2640 skew 0<br>
clock 28.1KHz<br>
v: height 1080 start 1084 end 1094 total 1125 clock 50.0Hz<br>
1920x1080i (0xbf) 74.2MHz +HSync +VSync Interlace<br>
h: width 1920 start 2008 end 2052 total 2200 skew 0<br>
clock 33.7KHz<br>
v: height 1080 start 1084 end 1094 total 1125 clock 60.0Hz<br>
<br>
From that list, this one ...<br>
1920x1080 (0xba) 148.5MHz +HSync +VSync<br>
h: width 1920 start 2008 end 2052 total 2200 skew 0<br>
clock 67.5KHz<br>
v: height 1080 start 1084 end 1089 total 1125 clock 60.0Hz<br>
... looks most like the settings I need for my projector at 1920x1080<br>
(67.5 H-freq and 148.5 Pixel Frequency)<br>
<br>
How can I make the machine use this setting instead of the 'current'<br>
one it is using?<br>
<br>
I assume I need to make a modeline out of those numbers, bot how do I<br>
do that?<br>
<br>
Damian<br>
</blockquote></blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
OK, I'm assuming that this is the aswer:<br>
</blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
# 1920x1080 @60Hz 67.5KHz 148.5MHz +HSync +VSync<br>
Modeline "1920x1080" 148.5 1920 2008 2052 2200 1080 1084 1089 1125<br>
+HSync +VSync<br>
</blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I'll give it a try tomorrow<br>
</blockquote>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Damian<br>
_______________________________________________<br>
</blockquote>
<br></div></div>
Looks like a valid modeline.<br>
But you also have to disable all other modes, so it can't switch to<br>
them anymore. I earlier gave some suggestions I think, but look in the<br>
readme coming with the nvidia driver for how to diable EDID modes etc.<br>
</blockquote>
<br>
Thanks Hika,<br>
<br>
It seems to have worked.<br>
<br>
It didn't initially, but then I added .. Option "PreferredMode" "1920x1080_60.00" (and renamed the modeline "1920x1080_60.00"). That seems to have done the trick.<br>
<br>
I don't know how to disable the other modes that are not compatible with my projector. I have Intel graphics.<br>
<br>
However, this is working for now and there's rarely a need for the resolution to switch. If I come across a better solution I will implement it.<br>
<br>
Thanks again,<div class="HOEnZb"><div class="h5"><br>
Damian<br>
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</div></div></blockquote></div><br></div>