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| System hangs when watching Live TV with KnoppMyth R5A15 http://forum.linhes.org/viewtopic.php?f=2&t=4397 |
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| Author: | miraclemaker [ Tue May 03, 2005 6:06 am ] |
| Post subject: | System hangs when watching Live TV with KnoppMyth R5A15 |
Hi guys. I had the same problem with R5A12 and I was hoping this new release would fix it, unfortunately it hasn't. My problem is that when I go to Live TV, after about 10 seconds or so everything will completely hang, no key combination will get me away from the frozen picture so I have to manually reboot. Here's my harware: Via Epia MII 12000 1GB RAM 40GB HDD Hauppauge PVR350 I'm in the UK so I've got KnoppMyth set up with PAL. If there's any extra info I can provide please let me know, I'd love to get this problem fixed. |
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| Author: | Xsecrets [ Tue May 03, 2005 7:59 am ] |
| Post subject: | |
are you using the pvr350 for output or the onboard video? If you are using the onboard video are you using the epia debs? |
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| Author: | miraclemaker [ Tue May 03, 2005 9:08 am ] |
| Post subject: | |
Thansk for your reply. I'm using onboard video at the moment - I wanted to get everything working correctly before I switched over to TV-out. I'm not using the epia-specific debs, I wasn't aware there were any for R5A15. Is it still Code: dpkg -i /usr/srcv/mythtv/epia/*.deb
to install them? |
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| Author: | Xsecrets [ Tue May 03, 2005 9:45 am ] |
| Post subject: | |
I believe so, but I don't have an epia, so I haven't followed it too closely, cesman may have included that stuff in the regular debs, but I don't remember hearing that, but I do remember hearing that you have to actually go check the use xvmc box in the new versions. |
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| Author: | miraclemaker [ Tue May 03, 2005 12:28 pm ] |
| Post subject: | |
There's no /usr/src/mythtv/epia folder so I'm hoping it's included. where is it I need to check the xvmc box? Is that only if I want to use tv out? |
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| Author: | Xsecrets [ Tue May 03, 2005 1:54 pm ] |
| Post subject: | |
the xvmc box is for accelerated mpeg2 playback. Mpeg2 files are what you get with pvr cards and I don't know that it's strictly neccesary, but If I remember correctly it was posted that on a 1G system without it took about 80%CPU to playback and with it was in the teens. the option is in the setings tv playback menu somewhere. |
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| Author: | miraclemaker [ Tue May 03, 2005 2:10 pm ] |
| Post subject: | |
Thanks I'll see if I can find the option to enable xvmc and see if that helps matters. |
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| Author: | wasup [ Wed May 04, 2005 12:33 pm ] |
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I thought I read that your Via Epia chpset had a bug in it, when it gets a large number of dma request , like thoe ones that come from the pvr-350 it freeze the machine. |
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| Author: | miraclemaker [ Wed May 04, 2005 12:45 pm ] |
| Post subject: | |
That's exactly what I've been reading here: http://mysettopbox.tv/phpBB2/viewtopic.php?t=4302 and here: http://gossamer-threads.com/lists/ivtv/ ... via;#19915 Although most people mention they get the problem when recording, and I get it when I just try and watch Live TV. VIA have released a test BIOS that suposedly fixes the problem. I'm currently checking if it will work with my motherboard (MII series) as well as the one they mentioned (M series) |
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| Author: | miraclemaker [ Wed May 04, 2005 1:40 pm ] |
| Post subject: | |
I couldn't find the xvmc setting XSecrets, if you can give me more direction on where to find it I'll give it a go. On the DMA issue. I've read that it might fix the problem if I disable DMA. I'll like to try this temporarily just to see if it fixes the problem (although it doesn't sound like a long term solution). Can someone tell me how to disable DMA? Thanks. |
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| Author: | wasup [ Wed May 04, 2005 5:42 pm ] |
| Post subject: | |
To turn Xvmc , on the frontend goto utilities/setup>tv settings>playback its like on the third or fourth page of options. To disable DMA I think you can use hdparm -d0 /dev/device ,but I would look into this carefully never tried myself. In other words use at your own risk. |
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| Author: | miraclemaker [ Sun May 08, 2005 3:01 pm ] |
| Post subject: | |
Thanks for that. On the page with the option for XVMC there is also an option to 'enable HW XVMC VLD Decoding (Via only)', so I enabled that along with the 'Use hardware XvMC MPEG decoding. Unfortunately this did not fix the problem. I'll see if I can find any more info on disabling DMA - whether it's a good idea or not. |
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