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Almost done, BUT getting Pausing & Color issues
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Author:  jacqueusi [ Mon Apr 17, 2006 10:20 am ]
Post subject:  Almost done, BUT getting Pausing & Color issues
I'm soo close to getting my Knoppmyth setup done. Backend is all set, dual HD3000 using OTA and one PVR-250 connected to DirecTV receiver, serial controlled. Capture is working.

Problem is, on my front end (AMD XP 2.4 1/2 Gig RAM, 100 MBs Ethernet, Nvidia 6200), when I play HD every 3 seconds there is a pause. It happens about 98% of the time. Picture is amazing though even in S-Video. Is this an indication of not having enough processor grunt?

As for the 6200, when I connect it to my Proview 32" LCD, when the Myth GUI loads, the screen is just about pitch black. I can make out a slight moire pattern and see part of the GUI, but it's so dark that its unusable. When I connect to S-Video, I can use Myth no problem. Finally, when I use Component (preferred connection), the whole screen has a bluish/purpilish color too it, as if someone dropped a filter over the entire screen. Finally, Component will only work if S-Video is connected first on boot and then I disconnect it.

Can anyone in on the board lead me to the path of HDTV salvation?
Author:  ceenvee703 [ Mon Apr 17, 2006 10:29 am ]
Post subject:  Re: Almost done, BUT getting Pausing & Color issues
jacqueusi wrote:
on my front end (AMD XP 2.4 1/2 Gig RAM, 100 MBs Ethernet, Nvidia 6200), when I play HD every 3 seconds there is a pause.


2.4 isn't enough to cut it unless you turn XvMC on in TV playback settings. Is it on?

The bluish-purplish component issue sounds like crossed cables. Have you triple-checked red->red, green->green, and blue->blue? I'm not sure component output is supported with Nvidia's Linux drivers, either...

Is the first type of connection to your LCD that you describe ("slight moire pattern and see part of the GUI") a VGA connection? Maybe the problem with that is the modeline?
Author:  jacqueusi [ Mon Apr 17, 2006 12:52 pm ]
Post subject: 
ceenvee703, THANK YOU for your quick response. I will check XvMC when I get home. I did a default install so I'm going to assume it's off by default.

As for the black screen scenario I tried my best to describe, yes, it's through VGA. Everything is pretty and viewable on boot, but when Myth loads, it's all super super dark.

Maybe an upgrade to the Nvidia driver would help? If so, any links on which driver to chose and how to install?

Thanks!
Author:  ceenvee703 [ Mon Apr 17, 2006 2:27 pm ]
Post subject: 
The playback settings are buried about 3 or 4 menus deep; keep going until you find them. You'll know you're using XvMC when your on-screen display is gray-scale instead of color. Plus you'll be able to play back HD. :wink:

Here's a thread about Nvidia and component output from mythtv-users

http://www.gossamer-threads.com/lists/m ... nt;#196471

Note that the post talks about Xorg settings, whereas KnoppMyth is using XFree86. You can find other current threads by using the same search string.

I also searched this forum for "new nvidia drivers" and found this thread, which includes info on how to install current versions:

http://mysettopbox.tv/phpBB2/viewtopic. ... ia+drivers
Author:  datobin1 [ Tue Apr 18, 2006 11:35 am ]
Post subject: 
To get the componite video working you will need to make some changes to your XF86Config-4 file.

add the following to the "Device" section
Option "ConnectedMonitor" "TV"
Option "TVStandard" "HD1080i"


You can change the "HD1080i" to "HD720P", "HD480P" depending on what your TV supports.

By adding these options to the config you will use the Nvidia default HD timings and solve the purple filter effect.
Author:  jacqueusi [ Tue Apr 18, 2006 9:08 pm ]
Post subject: 
Hmmm. Where to start, where to start.

Thank you ceenvee703 and datobin1 for your prompt responses. I've followed your suggestions and have gotten mixed results.

1. Purple filter effect. I originally thought I had the component cables mixed but in fact they were correct both on the receiver and video card sides. The purple filter effect does not occur in S-Video unless I also have the component connections connected. Also, the filter effect does not occur until the Nvidia splashscreen appears. I tried making mods to the XF86Config-4.in file with no success. I'm pasting my original file in hopes of getting some tips of what I might be missing:

Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "PS/2 Mouse" "CorePointer"
InputDevice "Serial Mouse" "CorePointer"
InputDevice "USB Mouse" "CorePointer"
EndSection

Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
@@NOPM@@
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/misc"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo"
FontPath "/usr/X11R6/lib/X11/fonts/PEX"
# Additional fonts: Locale, Gimp, TTF...
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic"
# FontPath "/usr/X11R6/lib/X11/fonts/latin2/75dpi"
# FontPath "/usr/X11R6/lib/X11/fonts/latin2/100dpi"
# True type and type1 fonts are also handled via xftlib, see /etc/X11/XftConfig!
FontPath "/usr/X11R6/lib/X11/fonts/Type1"
FontPath "/usr/share/fonts/ttf/western"
FontPath "/usr/share/fonts/ttf/decoratives"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/truetype/openoffice"
FontPath "/usr/share/fonts/truetype/ttf-bitstream-vera"
FontPath "/usr/share/fonts/latex-ttf-fonts"
FontPath "/usr/X11R6/lib/X11/fonts/defoma/CID"
FontPath "/usr/X11R6/lib/X11/fonts/defoma/TrueType"
EndSection

Section "Module"
Load "ddc" # ddc probing of monitor
Load "GLcore"
Load "dbe"
Load "dri"
Load "extmod"
Load "glx"
Load "bitmap" # bitmap-fonts
Load "speedo"
Load "type1"
Load "freetype"
Load "record"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "CoreKeyboard"
Option "XkbRules" "xfree86"
Option "XkbModel" "pc105"
Option "XkbLayout" "de"
Option "XkbVariant" "nodeadkeys"
EndSection

Section "InputDevice"
Identifier "Serial Mouse"
Driver "mouse"
Option "Protocol" "Microsoft"
Option "Device" "/dev/ttyS0"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection

Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
EndSection

# Auto-generated by KNOPPIX mkxf86config
@@MONITOR@@

Section "Device"
### Available Driver options are:-
# sw_cursor is needed for some ati and radeon cards
#Option "sw_cursor"
#Option "hw_cursor"
#Option "NoAccel"
#Option "ShowCache"
#Option "ShadowFB"
#Option "UseFBDev"
#Option "Rotate"
Identifier "Card0"
# The following line is auto-generated by KNOPPIX mkxf86config
Driver "@@XMODULE@@"
VendorName "All"
BoardName "All"
# BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultColorDepth 16
SubSection "Display"
Depth 1
@@MODES@@
EndSubSection
SubSection "Display"
Depth 4
@@MODES@@
EndSubSection
SubSection "Display"
Depth 8
@@MODES@@
EndSubSection
SubSection "Display"
Depth 15
@@MODES@@
EndSubSection
SubSection "Display"
Depth 16
@@MODES@@
EndSubSection
SubSection "Display"
Depth 24
@@MODES@@
EndSubSection
SubSection "Display"
Depth 32
@@MODES@@
EndSubSection
EndSection

Section "DRI"
Mode 0666
EndSection


2. I tried upgrading to the latest nvidia driver. Went w/o a hitch, but when I tried to exit to shell <crtl+alt+F1> the screen would fill with what I first thought was staticy junk, but now appears to be oversized, barely legible lettering. It appears that shell is coming up, but is not being displayed properly, so I have means of running nvidia-setup. ctrl+alt+F7 does get me back to a viable screen, but no command prompt access.

3. Xvmc, I found it! Tried it out, system would hang. I tried removing deinterlacing but I'm still getting pauses. Not quite sure how to get CPU stats to confirm that HD is taxing my processor.

I think that's it for now. As always, any assistance is GREATLY appreciated.
Author:  mac [ Tue Apr 18, 2006 10:43 pm ]
Post subject: 
To see your how busy your cpu is you can run "top"

There is also a nice x utility call called xosview. You can install it with "apt-get install xosview"
you may need to do a "apt-get update" first.

There is another thread about the purple video around:
http://mysettopbox.tv/phpBB2/viewtopic. ... light=blue
Author:  randomhtpcguy [ Wed Apr 19, 2006 11:44 am ]
Post subject: 
Check out this thread http://mysettopbox.tv/phpBB2/viewtopic. ... light=6200


turn off DPMS to get rid of a blue screen.
turn off AGP to get rid of stuttering playback when XvMC is enabled.

these settings are in your XF86config-4 file.
Author:  jacqueusi [ Fri Apr 21, 2006 2:23 pm ]
Post subject: 
YEAH! I found a modeline for my Proview LCD on this site, modified the *correct* XF86 file (I was mod'ing the XF86config-4.in and not the XF86config-4). Using the tips and tricks in this threads responses, Component works now and no bluish/purpilish screen.

Still getting the pauses, so I ran Top, and this is what came back:


PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6288 mythtv 15 0 299m 199m 114m S 74.5 19.8 1:42.49 mythfrontend
6234 root 16 0 173m 155m 95m R 24.6 15.4 0:33.48 XFree86
3765 mythtv 16 0 116m 15m 7164 S 0.3 1.5 0:00.20 mythbackend
6377 root 16 0 2208 1092 852 R 0.3 0.1 0:00.02 top
1 root 16 0 160 80 44 S 0.0 0.0 0:00.87 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
5 root 10 -5 0 0 0 S 0.0 0.0 0:00.35 events/0
6 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 khelper
7 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
9 root 10 -5 0 0 0 S 0.0 0.0 0:00.01 kblockd/0
10 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
129 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
130 root 15 0 0 0 0 S 0.0 0.0 0:00.19 pdflush
132 root 15 -5 0 0 0 S 0.0 0.0 0:00.00 aio/0
131 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0

When I run XvMC, processor utilization is near 0, so I'm thinking that XvMC doesn't work for me. There is no reference to AGP in my file, so I'm at a quandry of what my next step should be.

I tell you though, I'm amazed at the quality of HD. I was just watching a PBS program and can makeout the lettering on a poster in the background, so cool.
Author:  jacqueusi [ Fri Apr 21, 2006 3:43 pm ]
Post subject: 
Video wise, I'm all done, thanks to the contributions from this board.

I added Option "nvagp" "1" to the XF86Config file and now HDTV plays smooth. Processor utilization is as follows:

top - 17:40:34 up 4 min, 2 users, load average: 1.41, 0.83, 0.35
Mem: 1033024k total, 347408k used, 685616k free, 6584k buffers
Swap: 176392k total, 0k used, 176392k free, 130564k cached
Cumulative time On
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5697 mythtv 15 0 253m 111m 20m S 0.0 11.0 0:53.48 mythfrontend
5491 root 15 0 77836 65m 3064 S 0.0 6.5 0:18.45 XFree86
3928 mythtv 16 0 116m 15m 7148 S 0.0 1.5 0:00.06 mythbackend
3214 root 16 0 137m 4260 3112 S 0.0 0.4 0:00.04 apache
5655 mythtv 16 0 8412 4140 3204 S 0.0 0.4 0:00.37 x-window-manage
5229 root 16 0 3372 3372 2692 S 0.0 0.3 0:00.00 ntpd
5773 root 15 0 3984 2796 1232 S 0.0 0.3 0:00.10 bash
5382 root 16 0 9668 2308 1816 S 0.0 0.2 0:00.06 gdm
5770 root 16 0 14944 2156 1576 R 0.0 0.2 0:00.03 sshd
3215 www-data 18 0 137m 1672 520 S 0.0 0.2 0:00.00 apache
3216 www-data 18 0 137m 1672 520 S 0.0 0.2 0:00.00 apache
3217 www-data 21 0 137m 1672 520 S 0.0 0.2 0:00.00 apache
3219 www-data 21 0 137m 1672 520 S 0.0 0.2 0:00.00 apache
3220 www-data 21 0 137m 1672 520 S 0.0 0.2 0:00.00 apache
3961 root 18 0 8072 1536 920 S 0.0 0.1 0:00.00 smbd
5375 root 15 0 9304 1504 1064 S 0.0 0.1 0:00.00 gdm
3106 root 15 0 2468 1396 376 S 0.0 0.1 0:00.08 klogd
3959 root 16 0 5764 1376 880 S 0.0 0.1 0:00.00 nmbd
5783 root 16 0 2208 1092 856 R 0.0 0.1 0:00.24 top

Next step is to get SPDIF working, but that's for another thread and for another day.

YEAH!
Author:  ceenvee703 [ Fri Apr 21, 2006 3:53 pm ]
Post subject: 
Congrats, enjoy the system.
Author:  baishen78 [ Fri Sep 15, 2006 8:27 pm ]
Post subject: 
I have the same problem with blue screen on component. How do you turn DPMS off? I tried changing the setting from true to false, but that didn't work. So I commented out the line. That didn't work either.
Author:  owen [ Mon Jun 18, 2007 2:49 am ]
Post subject: 
I had the same problem - blueish tinge after the nvidia drivers loaded.

PC hooked up to TV by component out on a 7200GS. Changing DPMS to false didin't fix the problem. What did fix it was changing....

Code:
Option "TVStandard" "PAL-B"


to

Code:
Option "TVStandard" "576i"
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