Losing Video Signal with Nvidia Adapter

Powersurge · Post by **Powersurge** » Fri Dec 19, 2008 4:35 am

Hi,

I have successfully set up a working MiniMyth frontend and it has been working flawlessly for the past couple of weeks. Now I thought I'd give HD video a try. First I wanted to make sure that I could get it to work on my own computer by booting off of a Mythbuntu Live CD, which it worked just fine. So then I decided to purchase an Nvidia GeForce 8500GT to install in my MiniMyth frontend. After installation, when I first powered it up, everything loaded normally until it got to 'Starting X', then the video signal was lost. I figured this was because I needed to download the MiniMyth test version with the latest Nvidia support, but it still did the same thing with that build as well? Am I missing something here? As soon as I pull the Nvidia card out, MiniMyth boots right up, so I know that the problem has to do with the Nvidia card... My guess is that maybe my onboard video might be conflicting with the Nvidia card, but how would I resolve this conflict if that is the case? Here is the hardware that I am using:

Backend:
* MSI P45 Neo3-FR LGA 775 Intel P45 ATX Intel Motherboard
* Intel Core 2 Duo E8400 Wolfdale 3.0GHz 6MB L2 Cache LGA 775 65W Dual-Core Processor
* SPARKLE SFPX95GT512U2HP GeForce 9500 GT 512MB 128-bit GDDR2 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
* Qty. 2 of Hauppauge WinTV-HVR-1600 ATSC/ClearQAM/NTSC TV Tuner PCI w/Remote 1178 PCI Interface
* CORSAIR DOMINATOR 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory

Frontend:
* VIA EPIA-M10000G Mini-ITX Motherboard with VIA C3 1GHz Processor
* PNY TECHNOLOGIES 512MB PC2100 DDR266 SDRAM
* Nvidia GeForce 8500GT

My minimyth.conf file:

Code: Select all

MM_MINIMYTH_FETCH_MINIMYTH_PM='yes'

MM_DHCP_HOST_NAME='mythfe1'
MM_DHCP_DOMAIN_NAME='localnetwork.local'
MM_DHCP_TCODE='America/Los_Angeles'
MM_DHCP_DOMAIN_NAME_SERVERS='10.0.1.1 68.94.156.1 68.94.157.1'
MM_DHCP_NTP_SERVERS='0.fedora.pool.ntp.org'
MM_DHCP_LOG_SERVERS='none' 

MM_AUDIO_TYPE='digital+analog'
MM_AUDIO_CARD_NUMBER='auto'
MM_AUDIO_DEVICE_NUMBER='auto'

MM_X_OUTPUT_VGA='auto'
MM_X_MODE='800x600'

MM_MASTER_SERVER='10.0.1.10'
MM_MASTER_DBUSERNAME='mythtv'
MM_MASTER_DBPASSWORD='<secret>'
MM_MASTER_DBNAME='mythconverg'

MM_THEME_URL='auto'
MM_THEME_NAME='Retro'
MM_THEMEOSD_URL='auto'
MM_THEMEOSD_NAME='Retro-OSD'
MM_THEMECACHE_URL='auto'

Post by **Pablo** » Fri Dec 19, 2008 5:12 am

What is the value of MM_X_DRIVER in /etc/conf.d/minimyth?

Does /var/log/Xorg.0.0.log give any indication what might be wrong?

Powersurge · Post by **Powersurge** » Fri Dec 19, 2008 8:58 am

Thanks for the quick reply, Pablo!

The value of MM_X_DRIVER is 'nvidia' and I didn't see any indications of what might be wrong in the Xorg.0.0.log file, but here are the contents of the files if you would like to take a look:

http://www.UniqueTech.net/MiniMyth/minimyth.txt
http://www.UniqueTech.net/MiniMyth/xorglog.txt

tsjoender · Post by **tsjoender** » Fri Dec 19, 2008 7:22 pm

I had a similar experience with a 9400GT card. Somehow the DVI-I port is set as VGA 0 and the VGA port is VGA 1 (the second VGA port). If you change this line in your minimyth.conf:

Code: Select all

MM_X_OUTPUT_VGA='auto'

to

Code: Select all

MM_X_OUTPUT_VGA='1'

It might work. It did for me. Alternatively you can use a DVI-I to VGA adapter if you prefer to solve it hardware wise.

Powersurge · Post by **Powersurge** » Sat Dec 20, 2008 6:12 am

That got it working! Thanks so much for your help!