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Bug#808982: marked as done (v4l2: DVB-T af9015 not working anymore)

Your message dated Sun, 09 May 2021 07:19:34 -0700 (PDT)
with message-id <6097ef76.1c69fb81.56688.0ace@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #808982,
regarding v4l2: DVB-T af9015 not working anymore
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
808982: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808982
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: kernel
Severity: normal
File: v4l2

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

I have an avermedia Volar Black HD (af9015) that still works pretty
well in windows 8 (it scans the whole dvb-t muxes in less than one
minute and the image is perfect even in HD).
When I try it on linux, it takes 12 minutes to scan with w_scan, and
despite showing lines such as :
updating transponder:
   (QAM_64   f = 4294967 kHz I999B8C999D0T8G32Y0) 0x405A
to (QAM_64   f = 4294967 kHz I999B8C999D0T8G8Y0) 0x405A
undefined coderate HP
in the end, it says :

tune to: QAM_AUTO f = 482000 kHz I999B8C999D999T999G999Y999 
(time: 12:13) ----------no signal----------
tune to: QAM_AUTO f = 482000 kHz I999B8C999D999T999G999Y999  (no signal)
(time: 12:14) ----------no signal----------
tune to: QAM_64   f = 4294967 kHz I999B8C999D0T8G8Y0 
(time: 12:16) skipped: (freq 4294967286 unsupported by driver)
tune to: QAM_AUTO f = 482166 kHz I999B8C999D999T999G999Y999 
(time: 12:16) ----------no signal----------
tune to: QAM_AUTO f = 482166 kHz I999B8C999D999T999G999Y999  (no signal)
(time: 12:17) ----------no signal----------

ERROR: Sorry - i couldn't get any working frequency/transponder
Nothing to scan!!


The problem is the same on my destop pc (debian 8, kernel
3.16.0-4-amd64) and on a Raspberry 1 (Linux osmc 4.2.3-3-osmc, or
openelec).
I tried also with tvheadend, but scan does not work either.

The firmware is correct and installed in /lib/firmware.
Dmesg shows that the usb device is well detected, with no errors :
[   13.846959] usb 1-5: dvb_usb_v2: found a 'AverMedia AVerTV Volar
Black HD (A850)' in cold state
[   13.847467] usb 1-5: firmware: direct-loading firmware
dvb-usb-af9015.fw
[   13.847474] usb 1-5: dvb_usb_v2: downloading firmware from file
'dvb-usb-af9015.fw'
[   13.917176] usb 1-5: dvb_usb_v2: found a 'AverMedia AVerTV Volar
Black HD (A850)' in warm state
[   14.327175] usb 1-5: dvb_usb_v2: will pass the complete MPEG2
transport stream to the software demuxer
[   14.335086] usb 1-5: DVB: registering adapter 0 frontend 0 (Afatech
AF9013)...
[   14.345704] usb 1-5: dvb_usb_v2: 'AverMedia AVerTV Volar Black HD
(A850)' successfully initialized and connected
[   14.345795] usbcore: registered new interface driver dvb_usb_af9015

And lsusb :
Bus 001 Device 003: ID 07ca:850a AVerMedia Technologies, Inc. AverTV
Volar Black HD (A850)

It looks like the af9015 is not working correctly with any linux kernels
(32 or 64 bits) >= 3, although it seems to be recognised (firmware uploaded).


I must say it is very frustrating to see a device still supported in
windows 8, and working perfectly, but not working anymore in linux
despite stated as supported in
http://www.linuxtv.org/wiki/index.php/AVerTV_Volar_Black_HD_%28A850%29

Thanks in advance for any idea that could help !


*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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