** Changed in: linux (Ubuntu)
Status: Fix Committed = Fix Released
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https://bugs.launchpad.net/bugs/446575
Title:
dvb-t on asustek p7131 hybrid looks like poor quality signal
The patch is now included in Linux kernel 2.6.32.25:
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.32.y.git;a=commit;h=300ec625eb078f80424e1852d2c3afbe87a6e1c7
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dvb-t on asustek p7131 hybrid looks like poor quality signal
https://bugs.launchpad.net/bugs/446575
You received this
The patch is now in stable-queue and is ready for review:
http://git.kernel.org/?p=linux/kernel/git/stable/stable-
queue.git;a=blob;f=queue-2.6.32/v4l-dvb-13966-dvb-t-regression-fix-for-
saa7134-cards.patch;h=8e84dcae9825de2d0b5b084d7340121f9d1cfbc1;hb=f2230c31505948962168721d44eec40cdb7697ea
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It seems like the patch from Alexey Osipov will be backported upstream
to 2.6.32:
http://article.gmane.org/gmane.linux.drivers.video-input-
infrastructure/23604
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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You received this bug
Hi,
I had the same problem with my card (E506R), updating to a newer kernel fixed
the bug.
Does the fix will be added to the standard Ubuntu kernel ?
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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@Giorgio - There is a PPA of kernel 2.6.33 available at
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Somewhat simpler than compiling the kernel yourself.
I could not find any evidence that the upstream kernel developers are
reviewing this for 2.6.32 as sometimes happens for some patches.
--
@madbiologist - Thank you for your comment. I know I can get a new
kernel from that PPA, or compile the latest v4l-dvb device drivers from
http://linuxtv.org/hg/v4l-dvb/ (and in fact, I've done that to fix this
problem), but sadly many people I know don't have the skills required to
the the same.
** Tags added: patch
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** Tags added: karmic lucid
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DVB-T cards based on the saa7134 chip are very common and cheap, and
there is already a fix for this bug, so please make sure this get fixed
before lucid is released. Thank you.
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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the problem still not fixed in lucid...
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Is there any chance to see this fixed in Karmic (without people having
to patch and compile their own kernel)?
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This patch is included in Linux kernel 2.6.33-rc5.
** Changed in: linux (Ubuntu)
Status: Triaged = Fix Committed
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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The patch from Alexey Osipov accepted to main tree of the video4linux
project with priority high.
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Changed in: linux (Ubuntu)
Status: Confirmed = Triaged
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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Hi
I'll send patch from Alexey Osipov to video4linux project as all our patches.
It will be commited to main tree of kernel after some time.
With my best regards, Dmitry.
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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Hi
The patch submitted to video4linux project. Current status of patch you
can find here:
http://patchwork.kernel.org/patch/71749/
With my best regards, Dmitry.
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Hi.
I'm the author of http://patchwork.kernel.org/patch/23345/
Accept my apologize for any inconvenience.
That patch fix V4L2 streaming IO type of capture for hardware MPEG
coded stream from saa7134.
I assume, that the regression is caused by changes in function
saa7134_set_dmabits(struct
Hi Alexey,
Your patch seems fine for me:
- No more error messages on my mythfrontend.log
I will be able to confirm this when I will be back home.
For info, I've compiled a kernel package with this fix based on Ubuntu
2.6.31-17.54. I can post this package if someone else want to test the
fix.
Hi Alexey / Vink
This all looks very promising.
How to apply patch please?
(or please post links to Alexey's patched kernel)
Thanks
Jose
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Hi Alexey,
Ok, I confirm that the issue is gone on my Pinnacle 310i Card with
Alexey's patch.
Jose,
You can test my custom package (using Alexey's patch), but it is unsafe
to trust package from unknown source, because it's not a good security
practice:
Thanks Vink
I'll take the risk :)
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Just to confirm, issue with dvb now fixed thanks to Alexey and Vink
(tested using Vink's custom kernel as above.
Question:
Will this patch be included in any further kernel upgrades, or do I have
to stay with this kernel version?
Regards
Jose
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dvb-t on asustek p7131 hybrid looks like poor
with Alexey's patch and Vink's packages the issue is fixed for me too
after I installed Vink's packages the only problem I have is that the
system wants to reinstall the kernel packages from official
repository... I think this is caused by the fact both Vink's and
officials packages have same
+1 Alessio regarding official kernel package wanting to be re-installed
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** Attachment removed: saa7134.diff
http://launchpadlibrarian.net/37451358/saa7134.diff
** Attachment added: saa7134.diff
http://launchpadlibrarian.net/37494026/saa7134.diff
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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You
Hi again,
As Ubuntu kernel 2.6.30-10 is the last working kernel for me, i dig in
the source code:
- It seems regressions comes from this patch:
http://patchwork.kernel.org/patch/23345/
So, I've attached a patch for 2.6.31-17.54 which disable some of these
changes.
** Attachment added:
Nice find Vink :)
I may have an alternative solution. One of two things:
EITHER:
I installed linux dvb tv from source.
I grabbed v4l-dvb-9defbd461e5f.tar.gz from linuxtv.org
(http://linuxtv.org/hg/v4l-dvb/archive/tip.tar.gz)
and did the .configure, make and sudo make install on it. I went a
Good to know Jose :)
I tried to compile v4l-dvb from mercurial some time ago but it gave me
some errors and refused to compile. I'll try again in the next days and
maybe I'll only compile what I really need, instead of all modules.
Nonetheless, it would be nice if they solved the problem, not
Sorry people, its been a long day, . but my solution was something
else.
In preparation for downgrading the kernel I added the custom rules file,
as indicated by Vink. This was all that was needed to fix the card and
TV playback on my system. I attach it in a zip. It needs to go here -
I've downgraded to 2.6.30-020630-generic on my karmic:
- no more pops and clicks
- video seems fine now!
For info, I've found this kernel here:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30/
You will have to create the file /etc/udev/rules.d/50-udev.rules according to
the procedure
Same problem here on MythTV:
- pops and clicks on sound
- degraded video with artifacts and swirls
The signal seems to be good... The card is Pinnacle PCTV 310i. On
2.6.28, everything was fine... Problem appears when upgrading to karmic.
I've also tried 2.6.32-9 ... same issue
--
dvb-t on
Anyone on the bug fixing team, anychance this is likely to get resolved
before, or in, Lucid Lynx?
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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dvb-t on asustek p7131 hybrid looks like poor quality signal
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Hi Karel, thanks for your help but unfortunately I don't think it's a
firmware problem. I had installed the firmware to /lib/firmware, and
from dmesg it seems the firmware is loading ok:
[ 16.212006] tda1004x: timeout waiting for DSP ready
[ 16.252007] tda1004x: found firmware revision 0 --
** Attachment added: scan.txt
http://launchpadlibrarian.net/35485262/scan.txt
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** Attachment added: dmesg.txt
http://launchpadlibrarian.net/35485249/dmesg.txt
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Ah good, Giorgio, I was beginning to think I was the only one with a
problem like this.
I have tested dvb transmissions with VLC as well (in case it was an
mplayer thing) and get the same video artifacts and audio pops and
clicks.
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dvb-t on asustek p7131 hybrid looks like poor quality signal
No Jose, sadly you're not alone :(
At first I thought it was an mplayer problem, so I compiled it from svn
but I get the same behaviour. I googled around, and it seems this
problem is present in other distros too and it only affects kernel
2.6.31 . Let's hope it'll get fixed as soon as possible.
Well, I have to take back my too optimistic comment. It worked perfect -
channel tunning, watching, recording, scheduled recording was working
fine both in myth and vlc. However, after (several?) restart i got
'tda1004x: timeout waiting for DSP ready' messages and tv-card is not
working at all. I
** Attachment added: dmesg.txt
http://launchpadlibrarian.net/35490969/dmesg.txt
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I removed completely mythtv, restarted and ... BINGO - card is working.
At least it is working in vlc.
But indeed, video is jerky (frequency 3-5x per minute), so I comfirm
this bug.
I am getting lot of following messages during show ..
[CODE]
libdvbpsi error (PSI decoder): TS discontinuity
Hi, I had problems with setup of mythtv on AverTV Digi Super 007 DVB-T
card
lspci: Multimedia controller: Philips Semiconductors
SAA7131/SAA7133/SAA7135 Video Broadcast Decoder (rev d1).
I described my issue here ...
http://ubuntuforums.org/showthread.php?t=1316032
I was really disappointed it
Hi,
Same problem here, on Kaffeine the channel scan shows signal and SNR but
doesn't find any channels. The card is Pinnacle PCTV 310i, and has been
working fine till Karmic. Below's the output of dmesg and lspci for if
it's of any help:
(sudo lspci -v, just the controller data):
01:07.0
Hi again,
Placing the firmware image manually to /usr/firmware (as described here:
http://ubuntuforums.org/archive/index.php/t-241431.html) solved the
firmware load issue for me. Now I can correctly scan for channels with
the scan command (kaffeine doesn't work, it displays the DVB device but
Good news tuukka. What is playback like in mplayer, any clicks and pops
on the sound and artifacts on the video?
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tuukka your problem was simple that you haven't the firmware file installed
in karmic the firmware files was splitted into 2 packages: linux-firmware
installed by default with free firmwares and linux-firmware-nonfree not
installed by default with non-free firmwares
to can watch dvb with many
I can also confirm this bug on Karmic 9.10.
Good signal, but pops and clicks on sound and degraded video with
artifacts and swirls. Also only gives sound to one speaker when webcam
(USB) plugged in?
Works fine on Jaunty and has done since Hardy.
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