em28xx/em2880-dvb (HVR-950) compilation woes.

[Sastraxi]

Hey all,

Upgraded to Hardy, went smooth as silk. Now the only issue remaining (apart from the dreadful power consumption) is to get my Hauppauge HVR-950 working once more.

I attempted the steps described in the infamous lunapark article (http://lunapark6.com/usb-hdtv-tuner-...v-hvr-950.html) but they do not seem to work for Hardy. Specifically...

cameron@vienna:/lib/firmware/v4l-dvb-experimental$ sudo make
[sudo] password for cameron: 
make -C /lib/firmware/v4l-dvb-experimental/v4l 
make[1]: Entering directory `/lib/firmware/v4l-dvb-experimental/v4l'
creating symbolic links...
make -C /lib/modules/2.6.24-12-generic/build SUBDIRS=/lib/firmware/v4l-dvb-experimental/v4l  modules
make[2]: Entering directory `/usr/src/linux-headers-2.6.24-12-generic'
  CC [M]  /lib/firmware/v4l-dvb-experimental/v4l/flexcop-pci.o
In file included from /lib/firmware/v4l-dvb-experimental/v4l/flexcop-common.h:23,
                 from /lib/firmware/v4l-dvb-experimental/v4l/flexcop-pci.c:10:
/lib/firmware/v4l-dvb-experimental/v4l/dvb_frontend.h:42:33: error: media/v4l_dvb_tuner.h: No such file or directory
In file included from /lib/firmware/v4l-dvb-experimental/v4l/flexcop-common.h:23,
                 from /lib/firmware/v4l-dvb-experimental/v4l/flexcop-pci.c:10:
/lib/firmware/v4l-dvb-experimental/v4l/dvb_frontend.h:165: error: field 'tuner_ops' has incomplete type
make[3]: *** [/lib/firmware/v4l-dvb-experimental/v4l/flexcop-pci.o] Error 1
make[2]: *** [_module_/lib/firmware/v4l-dvb-experimental/v4l] Error 2
make[2]: Leaving directory `/usr/src/linux-headers-2.6.24-12-generic'
make[1]: *** [default] Error 2
make[1]: Leaving directory `/lib/firmware/v4l-dvb-experimental/v4l'
make: *** [all] Error 2

... I'm not exactly sure where the problem lies. Has anyone gotten this card (and its digital capabilities that work flawlessly in the 2.6.22 kernel, in gutsy OR hardy) working with Hardy and the 2.6.24 kernel?

[gekkio]

It's a known problem when compiling em28xx with kernels >= 2.6.24.

I managed to get my em2880-dvb working by using this patch from the em28xx mailing list:
http://mcentral.de/pipermail/em28xx/...il/001481.html
It's a very simple Makefile patch, but it worked for me.

Hope it helps!

[tuku]

I have exactly the same problem. The link does not have the patch anymore, its just has the .obj file.
Where can I find the patch.
thanks

[gekkio]

The obj file IS the patch file, it's just named weirdly.

Just download the obj file and patch the source with

patch -p0 < v4l-dvb-kernel-Makefile-2.6.24.obj

[GaryAitcheson]

Many thanks for your help.

[xens]

Thanks it solved the problem for me!

I can't figure out why the em28xx driver isn't bundled with hardy, it's been a long time since this driver exists.

[ayellen]

Could someone please walk me through the specific steps of how to apply this patch?

Thanks.

[dkscudder]

I have been wrestling with this problem for several months. I've gotten mine working, so I thought I'd throw my 2 cents in . . .

I'm using Hardy 64. I'm pretty sure the patch mentioned above is already in the hg mcentral.de kernel and experimental repositories so it shouldn't be needed. However, just typing "make" still fails. So instead I type

make LINUXINCLUDE="-I`pwd`/linux/include -I`pwd`/v4l -Iinclude -include include/linux/autoconf.h"

which compiles nicely.

Then there is installing. If I do "make install" Ubuntu won't boot after the next reboot. It looks like HAL crashes. I'm pretty sure this is a bug that only affects 64 bit systems using kernel 2.6.24. I'm not smart enough to figure out what's going on exactly or how to fix it, so I use an ugly work around. Every time I boot up, I run the following command in a terminal:

cd /lib/firmware/v4l-dvb-experimental/;sudo make load;sudo /etc/init.d/mythtv-backend restart

and BANG -- It works like a charm. Obviously the last part isn't necessary if you don't use myth.

If someone knows of a better way I'm all ears. Hopefully these bugs will be fixed soon at the code level.

[bawilson2]

Originally Posted by dkscudder I have been wrestling with this problem for several months. I've gotten mine working, so I thought I'd throw my 2 cents in . . . I'm using Hardy 64. I'm pretty sure the patch mentioned above is already in the hg mcentral.de kernel and experimental repositories so it shouldn't be needed. However, just typing "make" still fails. So instead I type make LINUXINCLUDE="-I`pwd`/linux/include -I`pwd`/v4l -Iinclude -include include/linux/autoconf.h" which compiles nicely. Then there is installing. If I do "make install" Ubuntu won't boot after the next reboot. It looks like HAL crashes. I'm pretty sure this is a bug that only affects 64 bit systems using kernel 2.6.24. I'm not smart enough to figure out what's going on exactly or how to fix it, so I use an ugly work around. Every time I boot up, I run the following command in a terminal: cd /lib/firmware/v4l-dvb-experimental/;sudo make load;sudo /etc/init.d/mythtv-backend restart and BANG -- It works like a charm. Obviously the last part isn't necessary if you don't use myth. If someone knows of a better way I'm all ears. Hopefully these bugs will be fixed soon at the code level.

I'd like to second a request for help here. I tried and couldn't get things working either with the same setup. I've given up and switched back to 7.10 but would love to move up to 8.04 if somebody were able to figure this one out.

[gekkio]

Originally Posted by dkscudder I'm using Hardy 64. I'm pretty sure the patch mentioned above is already in the hg mcentral.de kernel and experimental repositories so it shouldn't be needed. However, just typing "make" still fails.

It's not there yet, so I recommend that you use the patch on the mailing list. The patch fiddles with include directories, so it might just do the same things you're doing but I urge you to use the patch just to be sure.

Originally Posted by ayellen Could someone please walk me through the specific steps of how to apply this patch?

Here are the exact steps to install the driver on Hardy (works on my 64-bit installation, should work on 32-bit too):

hg clone http://mcentral.de/hg/~mrec/v4l-dvb-experimental
cd v4l-dvb-experimental
wget http://mcentral.de/pipermail/em28xx/attachments/20080402/b43e9afe/v4l-dvb-kernel-Makefile-2.6.24.obj
patch -p0 < v4l-dvb-kernel-Makefile-2.6.24.obj
make
sudo make install

+ install firmware using instructions from http://mcentral.de/wiki/index.php5/Em2880#Installation
And reboot.

Originally Posted by dkscudder Then there is installing. If I do "make install" Ubuntu won't boot after the next reboot. It looks like HAL crashes. I'm pretty sure this is a bug that only affects 64 bit systems using kernel 2.6.24.

I assume your card is a USB DVB-T card. Does your system crash when it is not plugged in and you boot into Ubuntu?
Also, please note that this driver will break other v4l drivers (for example, my webcam's uvcvideo driver which is bundled in linux-ubuntu-modules-... package), so if you have a webcam or other potential v4l devices, you could try unplugging them.
I'm using Hardy 64-bit and the drivers works for me so there must be something specific in your system that causes the problems. I'll gladly help with isolating the problem.