I've just installed 0.3.7h onto my MythTV box (1 x PVR-350) and am seeing a
significant drop in quality when compared to running the hardware decoder.
>From watching this list several people have been raving about how good the
0.3.x drivers are and I am wondering if there is something that I am missing
that is causing what I am seeing. (It's quite possibly my own stupidity
rather than a problem with the driver I suspect).
This is the first time I've loaded up a driver that is different to the one
installed be the ATRPMs so I would also add that I do not know just how good
these new drivers are supposed to be when compared to the hardware decoder.
Maybe I am just too damn fussy? Several posts to this list seem to indicate
that the newer 0.3.x drivers are pretty damn good though.
The problems seem to be most noticeable when there is movement on the screen
and going from what I have read here people seem to be calling this
phenomenon 'tearing'.
The machine is an Intel motherboard with a 2.4GHz P4, PVR-350, running FC3,
setup pretty much as per Jarod's guide except for the 0.3.7h ivtv. Kernel is
2.6.10-1.766_FC3. CPU goes to around 37% when using the ivtv drivers but
bugger-all when using the decoder (I think that this is to be expected
right?)
Attached are my xorg.conf and modprobe.conf files in case that shows
something obvious. If other config files are useful please let me know so
that I can post them.
Any help will be very much appreciated. I really want to be able to use
these drivers so I can do DVD's, XMame etc...
I guess that if the behaviors I am seeing are expected for these admittedly
beta drivers I'll wait a while to see if they improve (unfortunately as I
have no skills in developing Linux drivers I cannot pitch in and help).
I am collecting notes from the attempt to upgrade ivtv drivers for the
purposes of writing a How-To for other MythTV newcomers. Perhaps this is the
way I can give back to the project?
Regards
Marty
# XFree86 4 configuration created by pyxf86config
Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
# RgbPath is the location of the RGB database. Note, this is the name of the
# file minus the extension (like ".txt" or ".db"). There is normally
# no need to change the default.
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Red Hat 6.0 and later now use a font server independent of
# the X server to render fonts.
RgbPath "/usr/X11R6/lib/X11/rgb"
# ModulePath "/usr/X11R6/lib/modules/extensions/nvidia"
# ModulePath "/usr/X11R6/lib/modules/extensions"
# ModulePath "/usr/X11R6/lib/modules"
FontPath "unix/:7100"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "fbdevhw"
Load "glx"
Load "record"
Load "freetype"
Load "type1"
EndSection
Section "InputDevice"
# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
# Option "Xleds" "1 2 3"
# To disable the XKEYBOARD extension, uncomment XkbDisable.
# Option "XkbDisable"
# To customise the XKB settings to suit your keyboard, modify the
# lines below (which are the defaults). For example, for a non-U.S.
# keyboard, you will probably want to use:
# Option "XkbModel" "pc102"
# If you have a US Microsoft Natural keyboard, you can use:
# Option "XkbModel" "microsoft"
#
# Then to change the language, change the Layout setting.
# For example, a german layout can be obtained with:
# Option "XkbLayout" "de"
# or:
# Option "XkbLayout" "de"
# Option "XkbVariant" "nodeadkeys"
#
# If you'd like to switch the positions of your capslock and
# control keys, use:
# Option "XkbOptions" "ctrl:swapcaps"
# Or if you just want both to be control, use:
# Option "XkbOptions" "ctrl:nocaps"
#
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "no"
EndSection
Section "InputDevice"
# If the normal CorePointer mouse is not a USB mouse then
# this input device can be used in AlwaysCore mode to let you
# also use USB mice at the same time.
Identifier "DevInputMice"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "no"
EndSection
Section "Monitor"
Identifier "PAL Monitor"
HorizSync 30-68
VertRefresh 50-120
Mode "720x480"
# D: 34.563 MHz, H: 37.244 kHz, V: 73.897 Hz
DotClock 34.564
HTimings 720 752 840 928
VTimings 480 484 488 504
Flags "-HSync" "-VSync"
EndMode
EndSection
Section "Device"
Identifier "Hauppauge PVR 350 iTVC15 Framebuffer"
Driver "ivtvdev"
Option "fbdev" "/dev/fb1"
Option "ivtv" "/dev/fb1"
Option "VideoOverlay" "on"
Option "XVideo" "1"
BusID "PCI:2:1:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Hauppauge PVR 350 iTVC15 Framebuffer"
Monitor "PAL Monitor"
DefaultDepth 24
DefaultFbbpp 32
Subsection "Display"
Depth 24
FbBpp 32
Modes "720x576"
EndSubsection
EndSection
Section "DRI"
Group 0
Mode 0666
EndSection
alias eth0 via-rhine
alias char-major-61-0 lirc_i2c
alias char-major-61-1 lirc_serial
options lirc_serial irq=4 io=0x3f8
####IR setup####
install lirc_i2c /sbin/modprobe ivtv; /sbin/modprobe --ignore-install lirc_i2c
install lirc_serial setserial /dev/ttyS0 uart none; /sbin/modprobe
--ignore-install lirc_serial
alias scsi_hostadapter ata_piix
alias snd-card-0 snd-emu10k1
remove snd-emu10k1 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; };
/sbin/modprobe -r --ignore-remove snd-emu10k1
install snd-intel8x0 /sbin/modprobe --ignore-install snd-intel8x0 &&
/usr/sbin/alsactl restore >/dev/null 2>&1 || :
remove snd-intel8x0 { /usr/sbin/alsactl store >/dev/null 2>&1 || : ; };
/sbin/modprobe -r --ignore-remove snd-intel8x0
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd
# ivtv modules setup
alias char-major-81 videodev
alias char-major-81-0 ivtv
alias tveeprom tveeprom-ivtv
options ivtv set-input=0
install ivtv /sbin/modprobe --ignore-install ivtv; /sbin/modprobe ivtv-fb
# install lirc_i2c /sbin/modprobe ivtv; /sbin/modprobe --ignore-install lirc_i2c
alias ieee1394-controller ohci1394
