Any suggestions on how to reduced flicker?

More specifically how to reduce flicker on a TV screen with an Nvidia 440 card?

Thanks,
mike

I would also be very interested in a solution to this problem. The problem I have is just while viewing the MythTV screens. Watching TV or recordings looks great. Any ideas?

Yes, no flicker when viewing something full motion. Flicker only occurs when displaying the same thing, like a configuration page... it's a redraw rate issue, I believe

Everything keeps pointing here;
http://sourceforge.net/projects/nv-tv-out/

I havn't really figured out what I'm supposed to do with this tool, but this evening I'll spend some time with it and post my results.

Well I'm not really sure what you guys are refering to as flicker I haven't noticed anything like that with my setup on nvidia tvout. I would make sure that your refresh rates are set properly. 30-50 60

nvtv is for the older nvidia cards. I'm not sure if they've updated it, but it didn't used to even work with the 4mx and newer.

I got the refresh's set as you advised (and the nvidia.sample), however the flicker is out of control.

The best way to see the flicker is to load Mozilla in a independant window, or the MythTV settings page.

Don't you see flicker?

What care / tv you got?

I'm on a MSI 440 with a sony wega

I see the flicker the most when in the mythmusic module and listening to music. I also have an nvidia 440.

I've never noticed any flicker. I don't have mozilla installed, but have been into the settings quite a bit. I have the onboard video from an nforce2 motherboard. gf4mx equivelant I think. And it's going svid out to a hitachi rear projection hdtv monitor.

go away flicker...
i hate this...

Nvidia makes me angry...

I've done more tests and I've narrowed things down a bit. The flicker is only visible for me when there are horizontal lines on the screen. For example, the setup screens where there are boxes around various options etc. This flicker is also visible when I exit KnoppMyth and I have an Xterm window up. Again it is only visible around the horziontal lines. Here is a clip of my XF86Config-4 file:

Identifier "Card0"
Option "ConnectedMonitor" "CRT, TV"
Option "TwinView" "1"
Option "TwinViewOrientation" "Clone"
Option "SecondMonitorHorizSync" "30-50"
Option "SecondMonitorVertRefresh" "60"
Option "MetaModes" "1024x768, 1024x768; 800x600, 800x600"
Option "TVStandard" "NTSC-M"
Option "TVOutFormat" "SVIDEO"
Option "TVOverScan" "0.7"
Option "NvAGP" "0"
# The following line is auto-generated by KNOPPIX mkxf86config
Driver "nvidia"
VendorName "All"
BoardName "All"

Any ideas what I'm doing wrong?

The X configuration file and problem you described is identical to the problem I run into.

are both of you running twinview? Just curious as I have never done the twinview thing and wonder if it has anything to do with the flicker that I don't see.

Nope, no twinview, just flat out TV (-;

I got the same problem... Always thought that it is supposed to be like this.

But now that I think about it I had the same problem when I used the TV-Out of my laptop. But there was an flicker control option in the tv-out panel of the graphic card driver... It seems like we need something like that for the nvidia drivers too.

Strange that only some of you see it though.

Just loaded this thing up and looks pretty good. Had same issue with flicker along with problem with outputting to SVGA and SVID at the same time. I pulled the following from suggestion to fix second issue and it fixed the flicker. I simply replaced the section in my XF86config-4 file with these and now only a couple of more issue and things should be good. For some reason the SVID output doesn't take up the complete TV screen.

Section "Monitor"
Identifier "Monitor0"
Option "DPMS" "true"
# HorizSync 28.0 - 78.0 # Warning: This may fry very old Monitors
HorizSync 28.0 - 96.0 # Warning: This may fry old Monitors
VertRefresh 50.0 - 76.0 # Very conservative. May flicker.
# These are some Modelines that happen to work on many systems
# Especially the "1024x768" has been thoroughly tested, even on Laptops
Modeline "640x480" 25.175 640 664 760 800 480 491 493 525 #60Hz
Modeline "800x600" 40.12 800 848 968 1056 600 601 605 628 #60Hz
Modeline "1024x768" 85 1024 1056 1152 1360 768 784 787 823
Modeline "1152x864" 92 1152 1208 1368 1474 864 865 875 895
Modeline "1152x864" 110 1152 1240 1324 1552 864 864 876 908
Modeline "1152x864" 135 1152 1464 1592 1776 864 864 876 908
Modeline "1152x864" 137.65 1152 1184 1312 1536 864 866 885 902 -HSync -VSync
Modeline "1280x1024" 80 1280 1296 1512 1568 1024 1025 1037 1165 Interlace
Modeline "1280x1024" 110 1280 1328 1512 1712 1024 1025 1028 1054
Modeline "1280x1024" 126.5 1280 1312 1472 1696 1024 1032 1040 1068 -HSync -VSync
Modeline "1280x1024" 135 1280 1312 1456 1712 1024 1027 1030 1064
Modeline "1280x1024" 135 1280 1312 1416 1664 1024 1027 1030 1064
Modeline "1280x1024" 157.5 1280 1344 1504 1728 1024 1025 1028 1072 +HSync +VSync
Modeline "1280x1024" 181.75 1280 1312 1440 1696 1024 1031 1046 1072 -HSync -VSync
Modeline "1600x1200" 162 1600 1664 1856 2160 1200 1201 1204 1250 +HSync +VSync
Modeline "1600x1200" 189 1600 1664 1856 2160 1200 1201 1204 1250 -HSync -VSync
Modeline "1600x1200" 202.5 1600 1664 1856 2160 1200 1201 1204 1250 +HSync +VSync
Modeline "1600x1200" 220 1600 1616 1808 2080 1200 1204 1207 1244 +HSync +VSync
ModeLine "1800x1440" 230 1800 1896 2088 2392 1440 1441 1444 1490 +HSync +VSync
ModeLine "1800x1440" 250 1800 1896 2088 2392 1440 1441 1444 1490 +HSync +VSync
EndSection

Section "Device"
Identifier "twinview"
Driver "nvidia"
VendorName "All"
BoardName "All"
Option "RenderAccel" "1"
Option "CursorShadow" "1"
Option "TwinView"
Option "TwinViewOrientation" "Clone"
Option "SecondMonitorHorizSync" "30-50"
Option "SecondMonitorVertRefresh" "60"
Option "MetaModes" "640x480, 640x480;640x480, NULL;NULL,640x480"
#Option "MetaModes" "800x600, 800x600"
#Option "MetaModes" "1024x768, 1024x768; 800x600, 800x600; 640x480, 640x480;"
Option "TVStandard" "NTSC-M"
Option "ConnectedMonitor" "crt,tv"
Option "TVOutFormat" "SVideo"
#Option "TVOverScan" ".8"
#Option "hw_cursor"
#Option "NoAccel"
#Option "ShowCache"
#Option "ShadowFB"
#Option "UseFBDev"
#Option "Rotate"
# The following line is auto-generated by KNOPPIX mkxf86config
# BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "twinview"
Monitor "Monitor0"
DefaultColorDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 32
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

#Section "DRI"
#Mode 0666
#EndSection