0. Plug a DVB card into your PC. I have used an AVerTV DVB-T, and a Twinhan VisionPlus DVB-T
1. Install KnoppMythR4V3 or V4
Some commands need to be done as root. Instead of logging as root, use the sudo command. To allow sudo access, though, you need to be root for a while:
Code:
su
visudo
[add a line for your username, like nigel ALL=(ALL) ALL]
exit
visudo
[add a line for your username, like nigel ALL=(ALL) ALL]
exit
2. Install DVB drivers
** Option 1: Keep 2.4 kernel, compile and load DVB modules
The DVB kernel drivers need the kernel source code before they will compile.
Code:
cd /usr/src
sudo bzcat linux-2.4.25-chw.tar.bz2 | tar -xvf -
cp linux/.config linux-2.4.25-chw
[type y]
sudo rm linux
ln -s linux-2.4.25-chw linux
cd linux-2.4.25-chw
make oldconfig dep
sudo bzcat linux-2.4.25-chw.tar.bz2 | tar -xvf -
cp linux/.config linux-2.4.25-chw
[type y]
sudo rm linux
ln -s linux-2.4.25-chw linux
cd linux-2.4.25-chw
make oldconfig dep
Now, on KnoppMythR4V3, there is one error that needs correcting:
Code:
sudo rm /lib/modules/2.4.25-chw/build
sudo ln -sf /usr/src/linux-2.4.25-chw /lib/modules/2.4.25-chw/build
sudo ln -sf /usr/src/linux-2.4.25-chw /lib/modules/2.4.25-chw/build
Get a tarball of the DVB drivers, and if necessary, the firmware for your card:
Code:
linuxtv-dvb-1.1.0.tar.bz2
linuxtv-dvb-apps-1.1.0.tar.bz2
sc_main.mc
linuxtv-dvb-apps-1.1.0.tar.bz2
sc_main.mc
Start with the drivers:
Code:
bzcat linuxtv-dvb-1.1.0.tar.bz2 | tar -xvf -
cd linuxtv-dvb-1.1.0/build-2.4
make
cd linuxtv-dvb-1.1.0/build-2.4
make
Assuming this builds cleanly (in my case it did, but output an error about not having firmware for an av7110), you can try loading the modules:
Code:
sudo ./insmod.sh load
In my case, there were errors from four modules (probably because the devices that are trying to talk to are not plugged into my computer), but the other fifteen or so did load. The lsmod command will list them, and the dmesg command may list extra information. However, this script does not load all of the modules that were compiled, and in my case, didn't load the one for my AverTV DVB-T card, so I had to:
Code:
sudo ./insmod.sh unload
sudo rmmod evdev
sudo rmmod input
sudo mkdir /usr/lib/hotplug/firmware
sudo cp sc_main.mc /usr/lib/hotplug/firmware
sudo insmod dvb-core.o
sudo insmod bt878.o
sudo insmod dvb-bt8xx.o
sudo insmod sp887x.o
sudo rmmod evdev
sudo rmmod input
sudo mkdir /usr/lib/hotplug/firmware
sudo cp sc_main.mc /usr/lib/hotplug/firmware
sudo insmod dvb-core.o
sudo insmod bt878.o
sudo insmod dvb-bt8xx.o
sudo insmod sp887x.o
Once you are satisfied that the drivers can talk to your card, you can install them:
Code:
sudo make install
Note that with linuxtv-dvb-1.1.1, you will also need to do:
Code:
cd ..
sudo ./MAKEDEV-DVB.sh
sudo ./MAKEDEV-DVB.sh
This creates the directory /dev/dvb/adapter0 containing some device nodes, which the device drivers use as their interface to DVB client software like MythTV.
** Option 2: Manually upgrade to a 2.6 kernel (which already contains DVB drivers)
Get a tarball of a 2.6 kernel (e.g. linux-2.6.3.tar.bz2)
Code:
cd /usr/src
bzcat linux-2.6.3.tar.bz2 | tar -xvf -
bzcat linux-2.6.3.tar.bz2 | tar -xvf -
Copy config from current kernel:
Code:
cp linux/.config linux-2.6.3/.config
sudo rm linux
ln -s linux-2.6.3.tar.bz2 linux
cd linux
sudo rm linux
ln -s linux-2.6.3.tar.bz2 linux
cd linux
Use as basis for new kernel:
Code:
make oldconfig
make menuconfig
make menuconfig
(be sure to turn on DVB support - both the core and drivers for your card)
Code:
make bzImage modules
sudo make install modules_install
sudo make install modules_install
Get new version of module tools, copy somewhere
Code:
bzcat module-init-tools-3.0.tar.bz2 | tar -xvf -
cd module-init-tools-3.0
./configure --prefix=/
sudo make moveold
make
sudo make install
sudo ./generate-modprobe.conf /etc/modprobe.conf
cd module-init-tools-3.0
./configure --prefix=/
sudo make moveold
make
sudo make install
sudo ./generate-modprobe.conf /etc/modprobe.conf
Change /proc/ksyms to /proc/kallsyms in these files?:
/etc/init.d/modutils
/etc/init.d/nfs-common
Code:
sudo vi /etc/lilo.conf
[add a new "image" section for your new kernel,
and add a line "prompt" somewhere before the sections]
sudo /sbin/lilo
[watch carefully for errors]
sudo reboot ; exit
[add a new "image" section for your new kernel,
and add a line "prompt" somewhere before the sections]
sudo /sbin/lilo
[watch carefully for errors]
sudo reboot ; exit
(select your newly built kernel in LILO, and then watch the boot continue?)
After reboot (if your DVB driver was built as a module):
Code:
sudo modprobe dvb-bt8xx
sudo modprobe sp887x [or dst for the VisionPlus]
sudo modprobe sp887x [or dst for the VisionPlus]
should load the drivers (lsmod and dmesg will tell you what did and didn't work). Note that the first module is used to talk to the card, and the second is for the frontend (the little tin can that actually does the tuning). Many DVB cards are like this.
If your card and driver needs firmware, you might need to do something like:
Code:
sudo mkdir /usr/lib/hotplug/firmware
sudo cp sc_main.mc /usr/lib/hotplug/firmware
sudo cp sc_main.mc /usr/lib/hotplug/firmware
and reboot
** Option 3: Automatically upgrade to a 2.6 kernel
You need to be networked for this (I wasn't, which is why I documented the other two options first).
There are some kernels that you can get from the Debian upgrade servers which _may_ support DVB devices. I have not been able to successfully download these yet, so they may not work, but this is how to do it.
Code:
sudo vi /etc/apt/sources.list
[enable the sites to download testing packages]
sudo apt-get update
sudo apt-get install kernel-image-2.6-686
[enable the sites to download testing packages]
sudo apt-get update
sudo apt-get install kernel-image-2.6-686
3. [optional] Test the card
To test the card, we need the dvb-apps. Copy a tarball somewhere, then:
Code:
bzcat linuxtv-dvb-apps-1.1.0.tar.bz2 | tar -xvf -
cd linuxtv-dvb-apps-1.1.0
make
util/scan/scan util/scan/dvb-t/au-sydney_north_shore
cd linuxtv-dvb-apps-1.1.0
make
util/scan/scan util/scan/dvb-t/au-sydney_north_shore
If it finds any channels, it is probably working
4. [if DVB drivers built as modules] Add modules to startup
Code:
sudo vi /etc/modules
[add two lines; dvb-bt8xx sp887x for an AverMedia,
or dvb-bt8xx dst for a VisionPlus]
[add two lines; dvb-bt8xx sp887x for an AverMedia,
or dvb-bt8xx dst for a VisionPlus]
5. Add DVB to MythTV.
Running mythtv-setup and adding a DVB card helpfully says "Recompile with DVB-Support"
Untar the mythtv src tarball that cesman has so usefully included:
Code:
bzcat /usr/src/r4v3_src/mythtv-0.14/src/mythtv-0.14.tar.bz2 | tar -xvf -
cd mythtv-0.14
cd mythtv-0.14
or, on R4V4:
Code:
sudo bzcat /usr/src/r4v4_src/mythtv-0.15/src/mythtv-0.15.1.tar.bz2 | tar -xvf -
cd mythtv-0.15.1
cd mythtv-0.15.1
Code:
vi settings.pro
[Change PREFIX to /usr, find the DVB section,
uncomment the CONFIG, DEFINES & INCLUDEPATH lines,
and change the INCLUDEPATH there to /usr/include]
export QTDIR=/usr/share/qt3
./configure
qmake mythtv.pro
make
cd libs/libmythtv
sudo make install
[Change PREFIX to /usr, find the DVB section,
uncomment the CONFIG, DEFINES & INCLUDEPATH lines,
and change the INCLUDEPATH there to /usr/include]
export QTDIR=/usr/share/qt3
./configure
qmake mythtv.pro
make
cd libs/libmythtv
sudo make install
After that, MythTV knows about DVB cards. mythtv-setup should list info about the DVB card you have added, and after it exits should say:
2004-03-05 10:13:42 DVB#0 StatusMonitor Starting
__________________________________________________________________________________
Note: errors in the DVB stream will cause problems in mythtv, so make sure your signal is good and strong.
The backend will eventually crash when viewing a bad DVB stream. This patch (from Kenneth) should stop these crashes:
Code:
Index: transform.c
===================================================================
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/dvbdev/transform.c,v
retrieving revision 1.7
diff -u -r1.7 transform.c
--- transform.c 1 Jan 2004 19:07:34 -0000 1.7
+++ transform.c 9 Jul 2004 06:28:31 -0000
@@ -2121,7 +2121,7 @@
p->count += rest;
// fprintf(stderr,"count: %d \n",p->count);
send_ipack(p);
- if (count - rest > 0)
+ if (rest > 0 && count - rest > 0)
write_ipack(p, data+rest, count-rest);
}
}
===================================================================
RCS file: /var/lib/mythcvs/mythtv/libs/libmythtv/dvbdev/transform.c,v
retrieving revision 1.7
diff -u -r1.7 transform.c
--- transform.c 1 Jan 2004 19:07:34 -0000 1.7
+++ transform.c 9 Jul 2004 06:28:31 -0000
@@ -2121,7 +2121,7 @@
p->count += rest;
// fprintf(stderr,"count: %d \n",p->count);
send_ipack(p);
- if (count - rest > 0)
+ if (rest > 0 && count - rest > 0)
write_ipack(p, data+rest, count-rest);
}
}
