I made the mistake of making two major changes to my MythTV setup at one time:

1) I changed to a dedicated backend system, with two frontends feeding off the backend (which has all the tuners and the storage)

2) I upgraded all systems to R5E50 from R5D1

Now, when I use XvMC on the frontends, I get stuttering audio while viewing HDTV. I know the following:

-It is not a network bandwidth issue. Watching 1080i content never goes above 3.5MBps (about 28Mbps), while I have tested the network up to 85Mbps w/ FTP, SMB and NFS.

-While using "standard" decoding (as opposed to XvMC), my frontends (P4 2.8/800/HT) play all HD content perfectly. Thus, it is not a processing power issue.

-CPU usage is 40-60% while watching 1080i HD, both using Standard and XvMC decoding methods.

-I have turned on extra audio buffering in playback settings and aggressive sound card buffering in general settings. Neither helps/hurts.

Call me crazy, but I prefer the visual quality of XvMC to standard decoding! Is there a nvidia driver issue here?


My frontend hardware (both systems):
P4 2.8/800/HT
512MB DDR SDRAM
Geforce4 MX440 AGP
Integrated sound/network

My backend hardware:
P3 1.4/133/Tualatin
640MB SDRAM
Intel PRO/100 NIC
2x250GB in Raid0
2xAvermedia M179 on Comcast Analog
1xFusion HDTV5 RT-Lite on Comcast QAM
1xAvermedia A180 on Comcast QAM

There are several things I had to do (done in the listed order) before xvmc would work with HDTV playback in r5e50:

1. apply fix detailed in tjc's r5e50 guide (known issue #10):
http://mysettopbox.tv/phpBB2/viewtopic.php?t=13108&highlight=

3. download kernel source and recompile kernel:
http://mysettopbox.tv/phpBB2/viewtopic.php?t=13281

4. update nvidia drivers to version 1.0-9746:
http://mysettopbox.tv/phpBB2/viewtopic.php?t=13443&postdays=0&postorder=asc&start=15

5. edit your /etc/X11/xorg.conf file per the instructions in this thread:
http://mysettopbox.tv/phpBB2/viewtopic.php?t=13550

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner

Well, after looking at the above suggestions, it seems like I cannot upgrade my nvidia drivers, as the 9xxx series does not work with the Geforce4 MX series.

Any other suggestions as to how I can fix this audio glitching? It is not a CPU/net performance issue, so there must be a setting I can change or hack I can do to make this work! It worked perfectly under R5D1 with a standalone combined be/fe.

You should make sure that you fix "known issue #10" listed above. If you don't, then xvmc is NOT functional in R5E50.

If that doesn't help, you could spend $35 on a new nvidia 6200 AGP card.

One of the developers or testers of KnoppMyth will have to try and explain what changed from R5D1 to R5E50. That is out of my area of expertise.

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner

You are correct, in that "#10" above does make XvMC functional. Without it, it does not work correctly at all.

Any other input on my problem? It seems like I may be sunk with Geforce4 MX hardware, although I certainly hope not!

No. I'm out of ideas. In my mind, the $35 nvidia video card route is the cheap/easy fix. (After all, who wants to rely on a video card that isn't supported by nvidia any more?? Not me!)

Good luck.

_________________
KnoppMyth R5.5, Asus A8N-VM CSM (nvidia 6150 onboard video), AMD Athlon 64 dual-core 4200+, two 1GB sticks DDR 400, HD-3000 HDTV card, PVR-150 card, Iguanaworks RS-232 IR receiver/transmitter, Pioneer DVR-110 DVD burner

OK. Went with the prevailing wisdom here and bought + installed a GeForce 7100 PCIe (updated mobo+cpu while I was at it). Problem was, when I updated the drivers, I got a yellow screen upon startup.

The mobo+cpu did not do this, as the card worked fine with a nvidia-8776 R5E50 Knoppmyth install.

I can still use text mode [ctrl,alt,f1] but, X is just a weird yellow pattern.

Any ideas? This is fun

My log states I'm using 9746. The entire log is as follows:

X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
Build Operating System: UNKNOWN
Current Operating System: Linux brfrontend 2.6.18-chw-13 #1 SMP PREEMPT Sun Dec 3 23:47:01 PST 2006 i686
Build Date: 07 July 2006
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Sat Mar 3 12:34:55 2007
(==) Using config file: "/etc/X11/xorg.conf"
(==) ServerLayout "Default Layout"
(**) |-->Screen "Default Screen" (0)
(**) | |-->Monitor "Dell E228"
(**) | |-->Device "GeForce 7100GS"
(**) |-->Input Device "Generic Keyboard"
(**) |-->Input Device "Configured Mouse"
(WW) The directory "/usr/X11R6/lib/X11/fonts/misc" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/cyrillic" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/100dpi/" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/75dpi/" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/Type1" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/100dpi" does not exist.
Entry deleted from font path.
(WW) The directory "/usr/X11R6/lib/X11/fonts/75dpi" does not exist.
Entry deleted from font path.
(WW) The directory "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" does not exist.
Entry deleted from font path.
(**) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi
(==) RgbPath set to "/etc/X11/rgb"
(==) ModulePath set to "/usr/lib/xorg/modules"
(**) Ignoring ABI Version
(WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
(II) No APM support in BIOS or kernel
(II) Module ABI versions:
X.Org ANSI C Emulation: 0.3
X.Org Video Driver: 1.0
X.Org XInput driver : 0.6
X.Org Server Extension : 0.3
X.Org Font Renderer : 0.5
(II) Loader running on linux
(II) LoadModule: "bitmap"
(II) Loading /usr/lib/xorg/modules/fonts/libbitmap.so
(II) Module bitmap: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
Module class: X.Org Font Renderer
ABI class: X.Org Font Renderer, version 0.5
(II) Loading font Bitmap
(II) LoadModule: "pcidata"
(II) Loading /usr/lib/xorg/modules/libpcidata.so
(II) Module pcidata: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Video Driver, version 1.0
(--) using VT number 7

(II) PCI: PCI scan (all values are in hex)
(II) PCI: 00:00:0: chip 8086,2770 card 1019,1b76 rev 02 class 06,00,00 hdr 00
(II) PCI: 00:01:0: chip 8086,2771 card 0000,0000 rev 02 class 06,04,00 hdr 01
(II) PCI: 00:1b:0: chip 8086,27d8 card 1019,1b76 rev 01 class 04,03,00 hdr 00
(II) PCI: 00:1c:0: chip 8086,27d0 card 0000,0000 rev 01 class 06,04,00 hdr 81
(II) PCI: 00:1d:0: chip 8086,27c8 card 1019,1b76 rev 01 class 0c,03,00 hdr 80
(II) PCI: 00:1d:1: chip 8086,27c9 card 1019,1b76 rev 01 class 0c,03,00 hdr 00
(II) PCI: 00:1d:2: chip 8086,27ca card 1019,1b76 rev 01 class 0c,03,00 hdr 00
(II) PCI: 00:1d:3: chip 8086,27cb card 1019,1b76 rev 01 class 0c,03,00 hdr 00
(II) PCI: 00:1d:7: chip 8086,27cc card 1019,1b76 rev 01 class 0c,03,20 hdr 00
(II) PCI: 00:1e:0: chip 8086,244e card 0000,0000 rev e1 class 06,04,01 hdr 01
(II) PCI: 00:1f:0: chip 8086,27b0 card 1019,1b76 rev 01 class 06,01,00 hdr 80
(II) PCI: 00:1f:1: chip 8086,27df card 1019,1b76 rev 01 class 01,01,8a hdr 00
(II) PCI: 00:1f:3: chip 8086,27da card 1019,1b76 rev 01 class 0c,05,00 hdr 00
(II) PCI: 01:00:0: chip 10de,016a card 3842,c411 rev a1 class 03,00,00 hdr 00
(II) PCI: 02:00:0: chip 8086,109a card 1019,1b76 rev 00 class 02,00,00 hdr 00
(II) PCI: 03:04:0: chip 1106,3044 card 1106,3044 rev 80 class 0c,00,10 hdr 00
(II) PCI: End of PCI scan
(II) Intel Bridge workaround enabled
(II) Host-to-PCI bridge:
(II) Bus 0: bridge is at (0:0:0), (0,0,3), BCTRL: 0x0008 (VGA_EN is set)
(II) Bus 0 I/O range:
[0] -1 0 0x00000000 - 0x0000ffff (0x10000) IX[B]
(II) Bus 0 non-prefetchable memory range:
[0] -1 0 0x00000000 - 0xffffffff (0x0) MX[B]
(II) Bus 0 prefetchable memory range:
[0] -1 0 0x00000000 - 0xffffffff (0x0) MX[B]
(II) PCI-to-PCI bridge:
(II) Bus 1: bridge is at (0:1:0), (0,1,1), BCTRL: 0x0008 (VGA_EN is set)
(II) Bus 1 I/O range:
[0] -1 0 0x0000c000 - 0x0000cfff (0x1000) IX[B]
(II) Bus 1 non-prefetchable memory range:
[0] -1 0 0xfa000000 - 0xfcffffff (0x3000000) MX[B]
(II) Bus 1 prefetchable memory range:
[0] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B]
(II) PCI-to-PCI bridge:
(II) Bus 2: bridge is at (0:28:0), (0,2,2), BCTRL: 0x0000 (VGA_EN is cleared)
(II) Bus 2 I/O range:
[0] -1 0 0x0000e000 - 0x0000efff (0x1000) IX[B]
(II) Bus 2 non-prefetchable memory range:
[0] -1 0 0xfd400000 - 0xfdbfffff (0x800000) MX[B]
(II) Bus 2 prefetchable memory range:
[0] -1 0 0xfdc00000 - 0xfdcfffff (0x100000) MX[B]
(II) Subtractive PCI-to-PCI bridge:
(II) Bus 3: bridge is at (0:30:0), (0,3,3), BCTRL: 0x0000 (VGA_EN is cleared)
(II) Bus 3 I/O range:
[0] -1 0 0x0000d000 - 0x0000dfff (0x1000) IX[B]
(II) Bus 3 non-prefetchable memory range:
[0] -1 0 0xfde00000 - 0xfdefffff (0x100000) MX[B]
(II) Bus 3 prefetchable memory range:
[0] -1 0 0xfdd00000 - 0xfddfffff (0x100000) MX[B]
(II) PCI-to-ISA bridge:
(II) Bus -1: bridge is at (0:31:0), (0,-1,-1), BCTRL: 0x0008 (VGA_EN is set)
(--) PCI:*(1:0:0) nVidia Corporation unknown chipset (0x016a) rev 161, Mem @ 0xfa000000/24, 0xd0000000/28, 0xfb000000/24
(II) Addressable bus resource ranges are
[0] -1 0 0x00000000 - 0xffffffff (0x0) MX[B]
[1] -1 0 0x00000000 - 0x0000ffff (0x10000) IX[B]
(II) OS-reported resource ranges:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[5] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
(II) Active PCI resource ranges:
[0] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[1] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[2] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[3] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[4] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[5] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[6] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[7] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[8] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[9] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[10] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[11] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[12] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[13] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[14] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[15] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
(II) Active PCI resource ranges after removing overlaps:
[0] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[1] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[2] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[3] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[4] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[5] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[6] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[7] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[8] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[9] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[10] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[11] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[12] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[13] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[14] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[15] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
(II) OS-reported resource ranges after removing overlaps with PCI:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[5] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
(II) All system resource ranges:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[5] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[6] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[7] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[8] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[9] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[10] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[11] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[12] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[13] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
[14] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[15] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[16] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[17] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[18] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[19] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[20] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[21] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
(II) LoadModule: "bitmap"
(II) Reloading /usr/lib/xorg/modules/fonts/libbitmap.so
(II) Loading font Bitmap
(II) LoadModule: "dbe"
(II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
(II) Module dbe: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 0.3
(II) Loading extension DOUBLE-BUFFER
(II) LoadModule: "ddc"
(II) Loading /usr/lib/xorg/modules/libddc.so
(II) Module ddc: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Video Driver, version 1.0
(II) LoadModule: "dri"
(II) Loading /usr/lib/xorg/modules/extensions/libdri.so
(II) Module dri: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Server Extension, version 0.3
(II) Loading sub module "drm"
(II) LoadModule: "drm"
(II) Loading /usr/lib/xorg/modules/linux/libdrm.so
(II) Module drm: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Server Extension, version 0.3
(II) Loading extension XFree86-DRI
(II) LoadModule: "extmod"
(II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
(II) Module extmod: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 0.3
(II) Loading extension SHAPE
(II) Loading extension MIT-SUNDRY-NONSTANDARD
(II) Loading extension BIG-REQUESTS
(II) Loading extension SYNC
(II) Loading extension MIT-SCREEN-SAVER
(II) Loading extension XC-MISC
(II) Loading extension XFree86-VidModeExtension
(II) Loading extension XFree86-Misc
(II) Loading extension XFree86-DGA
(II) Loading extension DPMS
(II) Loading extension TOG-CUP
(II) Loading extension Extended-Visual-Information
(II) Loading extension XVideo
(II) Loading extension XVideo-MotionCompensation
(II) Loading extension X-Resource
(II) LoadModule: "freetype"
(II) Loading /usr/lib/xorg/modules/fonts/libfreetype.so
(II) Module freetype: vendor="X.Org Foundation & the After X-TT Project"
compiled for 7.1.1, module version = 2.1.0
Module class: X.Org Font Renderer
ABI class: X.Org Font Renderer, version 0.5
(II) Loading font FreeType
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="NVIDIA Corporation"
compiled for 4.0.2, module version = 1.0.9746
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 0.1
(II) Loading extension GLX
(II) LoadModule: "int10"
(II) Loading /usr/lib/xorg/modules/libint10.so
(II) Module int10: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org Video Driver, version 1.0
(II) LoadModule: "record"
(II) Loading /usr/lib/xorg/modules/extensions/librecord.so
(II) Module record: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.13.0
Module class: X.Org Server Extension
ABI class: X.Org Server Extension, version 0.3
(II) Loading extension RECORD
(II) LoadModule: "v4l"
(II) Loading /usr/lib/xorg/modules/drivers/v4l_drv.so
(II) Module v4l: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 0.1.1
ABI class: X.Org Video Driver, version 1.0
(II) LoadModule: "vbe"
(II) Loading /usr/lib/xorg/modules/libvbe.so
(II) Module vbe: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.1.0
ABI class: X.Org Video Driver, version 1.0
(II) LoadModule: "nvidia"
(II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
(II) Module nvidia: vendor="NVIDIA Corporation"
compiled for 4.0.2, module version = 1.0.9746
Module class: X.Org Video Driver
(II) LoadModule: "kbd"
(II) Loading /usr/lib/xorg/modules/input/kbd_drv.so
(II) Module kbd: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.1.0
Module class: X.Org XInput Driver
ABI class: X.Org XInput driver, version 0.6
(II) LoadModule: "mouse"
(II) Loading /usr/lib/xorg/modules/input/mouse_drv.so
(II) Module mouse: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.1.1
Module class: X.Org XInput Driver
ABI class: X.Org XInput driver, version 0.6
(II) v4l driver for Video4Linux
(II) NVIDIA dlloader X Driver 1.0-9746 Fri Dec 15 09:56:41 PST 2006
(II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
(II) Primary Device is: PCI 01:00:0
(--) Chipset NVIDIA GPU found
(II) Loading sub module "fb"
(II) LoadModule: "fb"
(II) Loading /usr/lib/xorg/modules/libfb.so
(II) Module fb: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 1.0.0
ABI class: X.Org ANSI C Emulation, version 0.3
(II) Loading sub module "wfb"
(II) LoadModule: "wfb"
(II) Loading /usr/lib/xorg/modules/libwfb.so
(II) Module wfb: vendor="X.Org Foundation"
compiled for 7.1.99.2, module version = 1.0.0
(II) Loading sub module "ramdac"
(II) LoadModule: "ramdac"
(II) Loading /usr/lib/xorg/modules/libramdac.so
(II) Module ramdac: vendor="X.Org Foundation"
compiled for 7.1.1, module version = 0.1.0
ABI class: X.Org Video Driver, version 1.0
(II) resource ranges after xf86ClaimFixedResources() call:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[5] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[6] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[7] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[8] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[9] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[10] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[11] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[12] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[13] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
[14] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[15] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[16] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[17] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[18] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[19] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[20] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[21] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
(II) resource ranges after probing:
[0] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[1] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[2] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[3] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[4] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[5] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[6] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[7] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[8] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[9] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[10] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[11] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[12] 0 0 0x000a0000 - 0x000affff (0x10000) MS[B]
[13] 0 0 0x000b0000 - 0x000b7fff (0x8000) MS[B]
[14] 0 0 0x000b8000 - 0x000bffff (0x8000) MS[B]
[15] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[16] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
[17] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[18] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[19] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[20] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[21] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[22] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[23] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[24] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
[25] 0 0 0x000003b0 - 0x000003bb (0xc) IS[B]
[26] 0 0 0x000003c0 - 0x000003df (0x20) IS[B]
(II) Setting vga for screen 0.
(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
(==) NVIDIA(0): RGB weight 888
(==) NVIDIA(0): Default visual is TrueColor
(==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
(**) NVIDIA(0): Enabling RENDER acceleration
(II) NVIDIA(0): NVIDIA GPU GeForce 7100 GS at PCI:1:0:0 (GPU-0)
(--) NVIDIA(0): Memory: 262144 kBytes
(--) NVIDIA(0): VideoBIOS: 05.44.02.67.01
(II) NVIDIA(0): Detected PCI Express Link width: 16X
(--) NVIDIA(0): Interlaced video modes are supported on this GPU
(--) NVIDIA(0): Connected display device(s) on GeForce 7100 GS at PCI:1:0:0:
(--) NVIDIA(0): DELL E228WFP (DFP-0)
(--) NVIDIA(0): DELL E228WFP (DFP-0): 155.0 MHz maximum pixel clock
(--) NVIDIA(0): DELL E228WFP (DFP-0): Internal Single Link TMDS
(II) NVIDIA(0): Assigned Display Device: DFP-0
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "1024x768"
(II) NVIDIA(0): Virtual screen size determined to be 1024 x 768
(++) NVIDIA(0): DPI set to (100, 100); computed from -dpi X commandline option
(--) Depth 24 pixmap format is 32 bpp
(II) do I need RAC? No, I don't.
(II) resource ranges after preInit:
[0] 0 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B]
[1] 0 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B]
[2] 0 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B]
[3] -1 0 0x00100000 - 0x3fffffff (0x3ff00000) MX[B]E(B)
[4] -1 0 0x000f0000 - 0x000fffff (0x10000) MX[B]
[5] -1 0 0x000c0000 - 0x000effff (0x30000) MX[B]
[6] -1 0 0x00000000 - 0x0009ffff (0xa0000) MX[B]
[7] -1 0 0xfdeff000 - 0xfdeff7ff (0x800) MX[B]
[8] -1 0 0xfd400000 - 0xfd7fffff (0x400000) MX[B]
[9] -1 0 0xfdbe0000 - 0xfdbfffff (0x20000) MX[B]
[10] -1 0 0xfdfff000 - 0xfdfff3ff (0x400) MX[B]
[11] -1 0 0xfdff8000 - 0xfdffbfff (0x4000) MX[B]
[12] -1 0 0xfb000000 - 0xfbffffff (0x1000000) MX[B](B)
[13] -1 0 0xd0000000 - 0xdfffffff (0x10000000) MX[B](B)
[14] -1 0 0xfa000000 - 0xfaffffff (0x1000000) MX[B](B)
[15] 0 0 0x000a0000 - 0x000affff (0x10000) MS[B](OprD)
[16] 0 0 0x000b0000 - 0x000b7fff (0x8000) MS[B](OprD)
[17] 0 0 0x000b8000 - 0x000bffff (0x8000) MS[B](OprD)
[18] -1 0 0x0000ffff - 0x0000ffff (0x1) IX[B]
[19] -1 0 0x00000000 - 0x000000ff (0x100) IX[B]
[20] -1 0 0x0000df00 - 0x0000df7f (0x80) IX[B]
[21] -1 0 0x0000ef00 - 0x0000ef1f (0x20) IX[B]
[22] -1 0 0x00000500 - 0x0000051f (0x20) IX[B]
[23] -1 0 0x0000fb00 - 0x0000fb0f (0x10) IX[B]
[24] -1 0 0x0000fc00 - 0x0000fc1f (0x20) IX[B]
[25] -1 0 0x0000fd00 - 0x0000fd1f (0x20) IX[B]
[26] -1 0 0x0000fe00 - 0x0000fe1f (0x20) IX[B]
[27] -1 0 0x0000ff00 - 0x0000ff1f (0x20) IX[B]
[28] 0 0 0x000003b0 - 0x000003bb (0xc) IS[B](OprU)
[29] 0 0 0x000003c0 - 0x000003df (0x20) IS[B](OprU)
(II) NVIDIA(0): Setting mode "1024x768"
(II) Loading extension NV-GLX
(II) NVIDIA(0): NVIDIA 3D Acceleration Architecture Initialized
(II) NVIDIA(0): Using the NVIDIA 2D acceleration architecture
(==) NVIDIA(0): Backing store disabled
(==) NVIDIA(0): Silken mouse enabled
(**) Option "dpms"
(**) NVIDIA(0): DPMS enabled
(II) Loading extension NV-CONTROL
(==) RandR enabled
(II) Initializing built-in extension MIT-SHM
(II) Initializing built-in extension XInputExtension
(II) Initializing built-in extension XTEST
(II) Initializing built-in extension XKEYBOARD
(II) Initializing built-in extension XC-APPGROUP
(II) Initializing built-in extension SECURITY
(II) Initializing built-in extension XINERAMA
(II) Initializing built-in extension XFIXES
(II) Initializing built-in extension XFree86-Bigfont
(II) Initializing built-in extension RENDER
(II) Initializing built-in extension RANDR
(II) Initializing built-in extension COMPOSITE
(II) Initializing built-in extension DAMAGE
(II) Initializing built-in extension XEVIE
(II) Initializing extension GLX

Might be a network card issue, I've seen a similar problem here:
http://www.gossamer-threads.com/lists/e ... ist=mythtv
with HD stuff having video and audio corruption when playing from a front end. Dunno if it is the same but if you have a PCI network card handy it might be worth a shot if you are using onboard now...

_________________
MythTV box: Opty 170, MSI K8NGM2-FID, 1.5 GB PC2700, Seagate 7200.10 400GB, Lite-On Combo drive. PVR-150, HDHomeRun. Antec Sonata, Freezer 64 Pro. Oh so quiet.