[mythtv-users] Re:MythTV compile problem w/ XvMC support

Sat Oct 11 00:35:04 EDT 2003

Hello Jarod:

I seem to have XvMC working correctly with a dual-headed X.

Have you tried defining your TV Screen to the "LeftOf" the Monitor instead
of "RightOf".  I can't remember exactly why I did this (it was a while
ago) but it was for a good reason (not XvMC-related issue but something
else -- I think it was a "tearing" video issue).  However, it might be
worth at least trying.  Here's my ServerLayout:

Section "ServerLayout"
        Identifier       "Server Layout"
        Screen  "PCScreen"
        Screen  "TVScreen" LeftOf "PCScreen"
        InputDevice     "Generic Keyboard"
        InputDevice     "Configured Mouse"
EndSection

...which I believe correlates to your layout like so:

Section "ServerLayout" 
	Identifier "Server Layout" 
	Screen 0 "Screen0" 
	Screen 1 "Screen1" LeftOf "Screen0" 
	InputDevice "Keyboard1" "CoreKeyboard" 
	InputDevice "Mouse1" "CorePointer" 
EndSection

Chris

-----------------------------

Jarod, 

Thanks for the quick reply. I guess my terminology is muddled. I meant a 
secondary display, but I don't think it's TwinView). My XF86Config-4 file 
is below. If you (or anyone) has a suggested config that would work with 
dual non-mirrored displays I would be extremely greatful. 

Section "Files" 
# Multiple FontPath entries are allowed (they are concatenated together) 
# By default, Mandrake 6.0 and later now use a font server independent 
of 
# the X server to render fonts. 
FontPath "unix/:-1" 
EndSection 

Section "ServerFlags" 
#DontZap # disable <Crtl><Alt><BS> (server abort) 
AllowMouseOpenFail # allows the server to start up even if the mouse 
doesn't work 
#DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching) 
EndSection 

Section "Module" 
Load "dbe" # Double-Buffering Extension 
Load "v4l" # Video for Linux 
Load "extmod" 
Load "type1" 
Load "freetype" 
Load "glx" # 3D layer 
EndSection 

Section "InputDevice" 
Identifier "Keyboard1" 
Driver "Keyboard" 
Option "XkbModel" "pc105" 
Option "XkbLayout" "us" 
Option "XkbCompat" "" 
Option "XkbOptions" "" 
EndSection 

Section "InputDevice" 
Identifier "Mouse1" 
Driver "mouse" 
Option "Protocol" "PS/2" 
Option "Device" "/dev/psaux" 
Option "Emulate3Buttons" 
Option "Emulate3Timeout" "50" 
EndSection 

Section "Monitor" 
Identifier "Monitor0" 
VendorName "Plug'n Play" 
ModelName "Dell D1025HTX" 
HorizSync 30-70 
VertRefresh 50-120 

# Sony Vaio C1(X,XS,VE,VN)? 
# 1024x480 @ 85.6 Hz, 48 kHz hsync 
ModeLine "1024x480" 65.00 1024 1032 1176 1344 480 488 494 563 
-hsync -vsync 

# TV fullscreen mode or DVD fullscreen output. 
# 768x576 @ 79 Hz, 50 kHz hsync 
ModeLine "768x576" 50.00 768 832 846 1000 576 590 595 630 

# 768x576 @ 100 Hz, 61.6 kHz hsync 
ModeLine "768x576" 63.07 768 800 960 1024 576 578 590 616 
EndSection 

Section "Monitor" 
Identifier "Monitor1" 
HorizSync 30-50 
VertRefresh 60 
EndSection 

Section "Device" 
Identifier "NVCRT" 
VendorName "PNY" 
BoardName "nVidia GeForce 4 MX 440" 
Driver "nvidia" 
BusID "PCI:01:00:0" 
Screen 0 
Option "NoLogo" "1" 
Option "UseEdidFreqs" "1" 
Option "RenderAccel" "1" 
EndSection 

Section "Device" 
Identifier "NVTV" 
VendorName "PNY" 
BoardName "nVidia GeForce 4 MX 440" 
Driver "nvidia" 
BusID "PCI:01:00:0" 
Screen 1 
Option "ConnectMonitor" "tv" 
Option "TVStandard" "NTSC-M" 
Option "TVOutFormat" "SVIDEO" 
Option "NoLogo" "1" 
Option "RenderAccel" "1" 
EndSection 

Section "Screen" 
Identifier "Screen0" 
Device "NVCRT" 
Monitor "Monitor0" 
DefaultColorDepth 24 

Subsection "Display" 
Depth 24 
Modes "1600x1200" "1280x1024" "1024x768" "800x600" "640x480" 
ViewPort 0 0 
EndSubsection 
EndSection 

Section "Screen" 
Identifier "Screen1" 
Device "NVTV" 
Monitor "Monitor1" 
DefaultDepth 16 

Subsection "Display" 
Depth 16 
Modes "800x600" "640x480" 
ViewPort 0 0 
EndSubsection 
Option "TVOverScan" "0.65" 
EndSection 

Section "ServerLayout" 
Identifier "Server Layout" 
Screen 0 "Screen0" 
Screen 1 "Screen1" RightOf "Screen0" 
InputDevice "Keyboard1" "CoreKeyboard" 
InputDevice "Mouse1" "CorePointer" 
EndSection 

>From: "Jarod C. Wilson" <jcw at wilsonet.com> 
>Reply-To: Discussion about mythtv <mythtv-users at mythtv.org> 
>To: Discussion about mythtv <mythtv-users at mythtv.org> 
>Subject: Re: [mythtv-users] MythTV compile problem w/ XvMC support 
>Date: Fri, 10 Oct 2003 17:04:44 -0700 
> 
>On Friday, Oct 10, 2003, at 15:24 US/Pacific, Harry Orenstein wrote: 
> 
>>Jason, 
>> 
>>Just got home and tried it too. Compiles just fine now. But there is 
>>something that nobody ever mentioned (at least *I* can't find a mention
of 
>>it): XvMC won't run on a second x-session. You have to run TwinView in 
>>Clone mode (at least, Mythfrontend crashes if I try to run on a second 
>>x-session on my TV). Does anybody know about this and is just playing 
>>their cards close-to-the-vest? 
> 
>Are you running a second X session, or a second X display in non-mirrored 
>mode w/TwinView? 
> 
>If I recall correctly, it states in nVidia's driver docs that most 
>hardware-accelerated functions will work on a secondary X session. See 
>Appendix R: Configuring Multiple X Screens On One Card. 
> 
>As far as TwinView and getting XvMC on the secondary display, see
nVidia's 
>driver docs, Appendix I: Configuring TwinView, which states: 
> 
>Q: Do video overlays work across both display devices? 
> 
>A: Hardware video overlays only work on the first display device. 
> The current solution is that blitted video is used instead on TwinView. 
> 
>I believe XvMC is a hardware video overlay (someone correct me if I'm 
>wrong), so TwinView mirrored mode, or no hardware acceleration, it would 
>appear. 
> 
>--Jarod 
> 
>-- 
>Jarod C. Wilson, RHCE 
> 
>Got a question? Read this first... 
> http://catb.org/~esr/faqs/smart-questions.html 
>MythTV, Red Hat Linux 9 & ATrpms documentation: 
> http://pvrhw.goldfish.org/tiki-page.php?pageName=rh9pvr250 
>MythTV Searchable Mailing List Archive 
> http://www.gossamer-threads.com/archive/MythTV_C2/ 
> 
>_______________________________________________ 
>mythtv-users mailing list 
>mythtv-users at mythtv.org 
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users 

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