MythLogBot@irc.freenode.net :: #mythtv

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Thursday, February 9th, 2017, 00:01 UTC
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[08:55:22] stuarta: morning all
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[09:36:41] stuarta: #12811
[09:36:41] ** MythLogBot http://code.mythtv.org/trac/ticket/12811 **
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[15:21:25] gigem: stuarta: Morning.
[15:21:52] pvr4me: Felicitous greetings and salutations.
[15:22:20] stuarta: greeting and hallucinations!
[17:09:19] peterbennett (peterbennett!~Peter@mythtv/developer/peterbennett) has joined #mythtv
[17:12:05] jheizer_: stuarta, Build slave error. Thoughts? http://pastebin.com/vKrh0Bfj
[17:12:23] stuarta: that's unpleasant
[17:12:59] jheizer_: Just rebooted it an no help
[17:13:02] jheizer_ is now known as jheizer
[17:15:51] stuarta: i have to head off now, will see if I have any thoughts later on....
[17:16:46] jheizer: Alright. Poking around logs now. Don't think it has crashed or anything lately. Maybe just the sd card getting tired (thought buildslave /home is on a nfs drive)
[17:22:22] peterbennett: Is there any reason people should use QT painter and OpenGL Video renderer? #12984
[17:22:22] ** MythLogBot http://code.mythtv.org/trac/ticket/12984 **
[17:22:56] peterbennett: Using that combination causes the frontend to fail, I cannot find an easy solution.
[17:23:33] peterbennett: If opengl works, why not also use it for the painter
[17:24:48] peterbennett: I am thinking of taking the easy route, if OpenGL is not used for the Theme Painter, let the video fail over to another method if opengl video is selected.
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[20:13:13] dekarl1 is now known as dekarl
[20:14:19] dekarl: Is there any reason to use the qt painter at all?
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[20:37:00] peterbennett: dekarl: There are some setups where OpenGL does not work and you have to use the QT Painter.
[20:37:15] peterbennett: dekarl: For example Raspberry Pi
[20:37:38] peterbennett: dekarl: I also had an old laptop where Linux would crash on OpenGL
[20:37:39] dekarl: peterbennett: isn't that really a bug?
[20:38:54] dekarl: Using the software renderer on the slowest devices doesn't make any sense. I know that fixing the hardware renderer may not be exactly low hanging fruit though
[20:39:16] peterbennett: dekarl: raspbian OpenGL support is only for native, non-X11 applications.
[20:40:07] peterbennett: dekarl: There is a "experimental" OpenGL for raspberry Pi but that disables OpenMax video rendering so it is a non-starter for MythTV
[20:48:52] dekarl: peterbennett: doh. is that a GLES vs. OpenGL thing? Or do we have to decide either GL+OMX but as console app or desktop with either OMX or GL?
[20:49:33] dekarl: I only remember that you need a matching QT build, but I forgot what has to match...
[20:50:52] peterbennett: dekarl: The QT that comes with raspbian repository supports X windowed mode but does not support full screen frame buffer console application.
[20:51:58] peterbennett: dekarl: If you activate the "experimental" OpenGL it will work with the QT that comes with raspbian but Openmax video does not work
[20:52:41] peterbennett: dekarl: OpenGLES works with normal Raspbian but you will need a special build of QT to build mythtv to work on that.
[20:54:09] peterbennett: dekarl: I do not have the inclination to try to build QT for Raspberry Pi with OPENGLES support.
[20:55:18] peterbennett: dekarl: The current MythTV does use OPENGLES for the OSD via a number of kludges.
[20:59:23] dekarl: I have great respect for the effort you put into it to get that far. Starting to ship our own custom QT (lets throw it into external) would be taking it a bit far...
[21:00:03] peterbennett: Team Effort
[21:01:33] peterbennett: Lawrence Rust had build a custom QT. Maybe if i was more of an expert I may have tried it but I am rather new to all this stuff.
[21:01:56] jheizer: stuarta, Well I'm at a loss. dist-upgraded and all went fine. No errors anywhere that I see. Running lsb_release -a does segfault. So does /usr/bin/buildslave start
[21:01:56] jheizer: . But everything single other thing I've run is fine.
[21:03:39] jheizer: peterbennett, I know people talk about Pis eating sd cards. I've never had it happen as far as I know up until maybe now. Have you had any issues being the most active person on one. The above was reference to my pi buildslave.
[21:03:47] jheizer: It's acting goofy all of a sudden.
[21:04:26] peterbennett: jheizer: For all of my development work on raspberry Pi I use an external hard drive
[21:05:04] jheizer: Got ya. The buildslave work all happens on a nfs drive. Just the main OS on the sd card. It's jsut weird.
[21:05:05] peterbennett: The SD card is only used for boot up and not used again. The root file system is on the hard drive
[21:05:41] jheizer: Alright. If I have to redo this I'll probably just make it pxe boot.
[21:05:42] peterbennett: jheizer: What about /tmp? Where is that?
[21:06:01] peterbennett: Compiler makes a lot of use of /tmp
[21:06:37] peterbennett: I have found NFS to be rather slow for compiles
[21:06:51] jheizer: hmmm, rasbian default. tmpfs so ram drive right?
[21:07:09] jheizer: err no
[21:07:18] jheizer: / I guess bah
[21:07:39] peterbennett: no, /tmp is on the sd card
[21:08:02] peterbennett: raspbian has very small RAM so not much use of tmpfs
[21:08:28] jheizer: Yeah. I read the mount output backwards.
[21:08:41] jheizer: I guess we'll call it the card and I'll rebuild it.
[21:09:13] peterbennett: don't you have any spare hard drives lying around?
[21:09:35] peterbennett: i have old hard drives from prio machines, just stick one in an enclosure
[21:09:44] jheizer: errors are on the root fs so will have to start over anyway
[21:10:05] dekarl: peterbennett: I've been looking at the "how can our client re-add the scope id to the link local ipv6 addresses". But going through our code and finding the right spot to keep track of it caused me headaches :/
[21:10:11] jheizer: I have a few TB extra in my backend server so rather just keep it all there together.
[21:11:10] peterbennett: dekarl: From looking at internet searches, generally the link-local ip address is not used for much. Is it even something to seriously consider supporting?
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[21:13:37] dekarl: peterbennett: if its not then we should just change the default setting. In theory its the simplest way of setting up a disconnected network of multiple machines.
[21:14:14] dekarl: but I'm not sure its really used like that in the real world
[21:15:15] peterbennett: dekarl: How many years will it be before IPV4 goes away? Probably things will evolve by then..
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[22:01:18] dhampton: Twenty years ago people were saying the IPv4 would be dead in ten years. :-D
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[23:24:01] jheizer: peterbennett, (or anyone else) Just in case you ever get the urge to pxe boot a rpi, they DO NOT support tftp loading from a sub directory. Much wasted time and tcpdumps later across 2 machines I've found the issue. It completely ignores the entire folder/filename you give in the dhcp response and just asks for what it wants.
[23:25:20] jheizer: It doesn't even init the video so you have no clue what it is doing or how far it has gotten.
[23:34:34] gary_buhrmaster: I suspect you can boot u-boot or ipxe as your first "kernel" with a minimal SD image and then do whatever you want (double/triple trampolining)?
[23:35:41] jheizer: yeah or just mount it from the kernel and stuff on a sd card. Just a pain. Good way to waste an hour trying to track down what ever was wrong.
[23:35:58] jheizer: I don't have any other pxe booting items at the moment but I have in the past and folders are nice.
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