On 12/25/11 16:56, Fredrik Lingvall wrote:
On 12/18/11 10:20, Fredrik Lingvall wrote:
On 12/17/11 20:53, Mihai Dobrescu wrote:
Mihai,
I got some success. I did this,
# cd /usr/src (for example)
# git clone git://linuxtv.org/media_build.git
# emerge dev-util/patchutils
# emerge Proc-ProcessTable
# cd media_build
# ./build
# make install
Which will install the latest driver on your running kernel (just in
case
make sure /usr/src/linux points to your running kernel sources). Then
reboot.
You should now see that (among other) modules have loaded:
# lsmod
<snip>
em28xx 93528 1 em28xx_dvb
v4l2_common 5254 1 em28xx
videobuf_vmalloc 4167 1 em28xx
videobuf_core 15151 2 em28xx,videobuf_vmalloc
Then try w_scan and dvbscan etc. I got mythtv to scan too now. There
were
some warnings and timeouts and I'm not sure if this is normal or not.
You can also do a dmesg -c while scanning to monitor the changes en the
kernel log.
Regards,
/Fredrik
In my case I have:
lsmod |grep em2
em28xx_dvb 12608 0
dvb_core 76187 1 em28xx_dvb
em28xx 82436 1 em28xx_dvb
v4l2_common 5087 1 em28xx
videodev 70123 2 em28xx,v4l2_common
videobuf_vmalloc 3783 1 em28xx
videobuf_core 12991 2 em28xx,videobuf_vmalloc
rc_core 11695 11
rc_hauppauge,ir_lirc_codec,ir_mce_kbd_decoder,ir_sanyo_decoder,ir_sony_decoder,ir_jvc_decoder,ir_rc6_decoder,ir_rc5_decoder,em28xx,ir_nec_decoder
tveeprom 12441 1 em28xx
i2c_core 14232 9
xc5000,drxk,em28xx_dvb,em28xx,v4l2_common,videodev,tveeprom,nvidia,i2c_i801
yet, w_scan founds nothing.
I was able to scan using the "media_build" install method described
above but when trying to watch a free channel the image and sound was
stuttering severly. I have tried both MythTV and mplayer with similar
results.
I created the channel list for mplayer with:
lintv ~ # dvbscan -x0 -fc /usr/share/dvb/dvb-c/no-Oslo-Get -o zap >
.mplayer/channels.conf
And, for example, I get this output from mplayer plus a very
(blocky) stuttering image and sound:
lin-tv ~ # mplayer dvb://1@"TV8 Oslo" -ao jack
I did some more tests with release snapshots 2011-12-13, 2011-12-21,
and 2011-12-25, respectively. I did this by changing
LATEST_TAR :=
http://linuxtv.org/downloads/drivers/linux-media-LATEST.tar.bz2
LATEST_TAR_MD5 :=
http://linuxtv.org/downloads/drivers/linux-media-LATEST.tar.bz2.md5
in linux/Makefile to the corresponding release.
Results:
* linux-media-2011-12-13.tar.bz2
The ./build script builds the drivers cleanly, scanning works, but
watching video does not work correctly.
* linux-media-2011-12-21.tar.bz2
The ./build script fails at the as3645a.c file (on this machine but I
can build it on two other machines using the same kernel and kernel
2.6.39-gentoo-r3, respectively). I can build it with make menuconfig
etc (where I disabled stuff I don't need, eg. disabling [ ] Media
Controller API (EXPERIMENTAL) ). The em28xx generate a kernel core
dump though [1].
* linux-media-2011-12-25.tar.bz2
Same problem as 2011-12-21.
Regards,
/Fredrik
Here's some more test results.
I have upgraded the kernel to 3.1.6-gentoo (where I enabled DVB when I
build the kernel). Both
http://linuxtv.org/downloads/drivers/linux-media-2012-01-07.tar.bz2
and
http://linuxtv.org/downloads/drivers/linux-media-2012-01-08.tar.bz2
now builds using the
lin-tv ~ # cd /usr/src
lin-tv src # git clone git://linuxtv.org/media_build.git
lin-tv src # cd media_build
lin-tv media_build # ./build
lin-tv media_build # make install
method. Scanning and (finally) watching video works but not flawlessly.
I also suspect that I don't find all channels when I scan. I have
scanned using,
* dvbscan -x 0 -fc /usr/share/dvb/dvb-c/no-Oslo-Get >
.mplayer/channels.conf
* Kaffeine (1.2.2)
* MythTV (0.25_pre20120103)
respectively. Both kaffeine and mythtv reports a very low signal level
(0%) and an SNR of only 1%. (kaffeine). I'm not sure if the driver
reports this correctly though.
Whatching live TV works on some channels but not all. HD channels seems
more difficult than SD channels, and I have not figured out why some
channels work and some don't. I get
Signal 0% | S/N 2.6dB | BE 0 | (_L_S) Partial Lock
and no video on many channels in mythtv.
Regards,
/Fredrik
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