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Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0
noreply at mythtv
Jun 30, 2019, 3:14 AM
Post #1 of 9 (923 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
-------------------------------------+-------------------------------------
Reporter: abrossard | Owner: Peter Bennett
Type: Bug Report - | Status: new
General |
Priority: minor | Milestone: needs_triage
Component: MythTV - Mythtv- | Version: Master Head
setup | Keywords: mythtv-setup 0.29,
Severity: medium | 0.30, master
Ticket locked: 0 |
-------------------------------------+-------------------------------------
Hi,

This bug was first found with version 0.29 and is still present in the
latest master. mythtv-setup resets all the inputcard videodevice to the
same value after I modify one card or add one card. Here is the situation
after saving the changes in mythtv-setup. The problem is seen in both
tables capturecard and inputgroup.


{{{

mysql> select cardid, videodevice, displayname, defaultinput,
signal_timeout, channel_timeout, inputname, sourceid from capturecard
order by cardid;
+--------+------------------------------+-------------+--------------+----------------+-----------------+-----------+----------+
| cardid | videodevice | displayname | defaultinput |
signal_timeout | channel_timeout | inputname | sourceid |
+--------+------------------------------+-------------+--------------+----------------+-----------------+-----------+----------+
| 9 | /dev/dvb/adapter0/frontend0 | Nova T500 0 | DVBInput |
750 | 3500 | DVBInput | 1 |
| 11 | /dev/dvb/adapter0/frontend0 | Nova T500 2 | DVBInput |
500 | 1750 | DVBInput | 1 |
| 17 | /dev/dvb/adapter0/frontend0 | PV1 | Television |
1000 | 1750 | DVBInput | 1 |
| 22 | /dev/dvb/adapter0/frontend0 | PTV2 | Television |
1000 | 1750 | DVBInput | 1 |
| 24 | /dev/dvb/adapter0/frontend0 | TBS-0 F0 | Television |
1000 | 3000 | DVBInput | 1 |
| 25 | /dev/dvb/adapter0/frontend0 | TBS-0 SAT | Television |
15000 | 20000 | DVBInput | 3 |
| 26 | /dev/dvb/adapter0/frontend0 | TBS-1 F0 | Television |
1000 | 3000 | DVBInput | 1 |
| 27 | /dev/dvb/TBS6590-1/frontend1 | TBS-1 SAT | Television |
9000 | 20000 | DVB-S2 | 3 |

}}}


I just wanted to check if the new version would allow me to set some
new parameters on the existing card 27. When it proposed a videodevice,
**I had to select "new"** and retyped the old value. This is what the
table is supposed to look like:

{{{

| cardid | videodevice | displayname | defaultinput |
signal_timeout | channel_timeout | inputname | sourceid |
+--------+------------------------------+-------------+--------------+----------------+-----------------+-----------+----------+
| 9 | /dev/dvb/NOVA0/frontend0 | Nova T500 0 | DVBInput |
750 | 3500 | DVBInput | 1 |
| 11 | /dev/dvb/NOVA1/frontend0 | Nova T500 2 | DVBInput |
500 | 1750 | DVBInput | 1 |
| 17 | /dev/dvb/PCTV0/frontend0 | PV1 | Television |
1000 | 1750 | DVBInput | 1 |
| 22 | /dev/dvb/PCTV1/frontend0 | PTV2 | Television |
1000 | 1750 | DVBInput | 1 |
| 24 | /dev/dvb/TBS6590-0/frontend0 | TBS-0 F0 | Television |
1000 | 3000 | DVBInput | 1 |
| 25 | /dev/dvb/TBS6590-0/frontend1 | TBS-0 SAT | Television |
15000 | 20000 | DVBInput | 3 |
| 26 | /dev/dvb/TBS6590-1/frontend0 | TBS-1 F0 | Television |
1000 | 3000 | DVBInput | 1 |
| 27 | /dev/dvb/TBS6590-1/frontend1 | TBS-1 SAT | Television |
9000 | 20000 | DVB-S2 | 3 |

mytv[72] /usr/local/bin/mythtv-setup --version
Please attach all output as a file in bug reports.
MythTV Version : v31-Pre-517-gc3e7f806d0

}}}

Output:

{{{

2019-06-29 19:20:19.033263 C mythtv-setup version: master
[v31-Pre-517-gc3e7f806d0] www.mythtv.org
2019-06-29 19:20:19.033276 C Qt version: compile: 5.12.2, runtime: 5.12.2
2019-06-29 19:20:21.743131 I Current MythTV Schema Version (DBSchemaVer):
1350
2019-06-29 19:20:24.870371 I VBox: Using UPNP to search for Vboxes (3
secs)
2019-06-29 19:20:28.614070 I CardUtil(/dev/dvb/NOVA0/frontend0): dvb api
version 5.11
2019-06-29 19:20:28.614096 I CardUtil(/dev/dvb/NOVA0/frontend0): Delivery
systems: DVB-T
2019-06-29 19:20:28.761978 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:28.762005 I CardUtil: Supported delivery systems: DVB-T
2019-06-29 19:20:28.763171 W DiSEqCDevTree: No device tree for cardid 9
2019-06-29 19:20:28.829565 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:28.829601 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:28.852727 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:28.852760 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:28.852772 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:30.373587 I CardUtil(/dev/dvb/NOVA1/frontend0): dvb api
version 5.11
2019-06-29 19:20:30.373617 I CardUtil(/dev/dvb/NOVA1/frontend0): Delivery
systems: DVB-T
2019-06-29 19:20:30.522343 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:30.522366 I CardUtil: Supported delivery systems: DVB-T
2019-06-29 19:20:30.523425 W DiSEqCDevTree: No device tree for cardid 11
2019-06-29 19:20:30.589635 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:30.589669 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:30.612835 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:30.612868 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:30.612914 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:31.791716 I CardUtil(/dev/dvb/PCTV0/frontend0): dvb api
version 5.11
2019-06-29 19:20:31.791745 I CardUtil(/dev/dvb/PCTV0/frontend0): Delivery
systems: DVB-T
2019-06-29 19:20:31.830839 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:31.830873 I CardUtil: Supported delivery systems: DVB-T
2019-06-29 19:20:31.831906 W DiSEqCDevTree: No device tree for cardid 17
2019-06-29 19:20:31.897672 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:31.897706 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:31.920260 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:31.920295 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:31.920307 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:32.316740 I CardUtil(/dev/dvb/PCTV1/frontend0): dvb api
version 5.11
2019-06-29 19:20:32.316768 I CardUtil(/dev/dvb/PCTV1/frontend0): Delivery
systems: DVB-T
2019-06-29 19:20:32.355466 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:32.355489 I CardUtil: Supported delivery systems: DVB-T
2019-06-29 19:20:32.356437 W DiSEqCDevTree: No device tree for cardid 22
2019-06-29 19:20:32.422481 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:32.422515 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.445481 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:32.445514 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.445526 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:32.814670 I CardUtil(/dev/dvb/TBS6590-0/frontend0): dvb
api version 5.11
2019-06-29 19:20:32.814716 I CardUtil(/dev/dvb/TBS6590-0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.837382 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:32.837425 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.837437 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:32.838308 W DiSEqCDevTree: No device tree for cardid 24
2019-06-29 19:20:32.905348 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:32.905383 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.928125 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:32.928158 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:32.928170 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:33.960768 I CardUtil(/dev/dvb/TBS6590-0/frontend1): dvb
api version 5.11
2019-06-29 19:20:33.960801 I CardUtil(/dev/dvb/TBS6590-0/frontend1):
Delivery systems: DVB-S DVB-S2 DSS
2019-06-29 19:20:34.228674 I CardUtil: Current delivery system: DVB-S2
2019-06-29 19:20:34.228701 I CardUtil: Supported delivery systems: DVB-S
DVB-S2 DSS
2019-06-29 19:20:34.281865 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:34.281899 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:34.304122 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:34.304155 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:34.304167 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:36.286632 I CardUtil(/dev/dvb/TBS6590-1/frontend0): dvb
api version 5.11
2019-06-29 19:20:36.286668 I CardUtil(/dev/dvb/TBS6590-1/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:36.309521 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:36.309553 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:36.309564 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:36.310645 W DiSEqCDevTree: No device tree for cardid 26
2019-06-29 19:20:36.377952 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:36.377985 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:36.400730 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:36.400752 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:36.400759 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:20:37.408718 I CardUtil(/dev/dvb/TBS6590-1/frontend1): dvb
api version 5.11
2019-06-29 19:20:37.408750 I CardUtil(/dev/dvb/TBS6590-1/frontend1):
Delivery systems: DVB-S DVB-S2 DSS
2019-06-29 19:20:37.676740 I CardUtil: Current delivery system: DVB-S2
2019-06-29 19:20:37.676767 I CardUtil: Supported delivery systems: DVB-S
DVB-S2 DSS
2019-06-29 19:20:37.745562 I CardUtil(/dev/dvb/adapter0/frontend0): dvb
api version 5.11
2019-06-29 19:20:37.745596 I CardUtil(/dev/dvb/adapter0/frontend0):
Delivery systems: DVB-T DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:37.768028 I CardUtil: Current delivery system: DVB-T
2019-06-29 19:20:37.768061 I CardUtil: Supported delivery systems: DVB-T
DVB-T2 DVB-C/A ISDBT DVB-C/B
2019-06-29 19:20:37.768073 I CardUtil: Changing delivery system from
DVB-T to DVB-T2
2019-06-29 19:21:38.420739 I CardUtil(/dev/dvb/TBS6590-1/frontend1): dvb
api version 5.11
2019-06-29 19:21:38.420772 I CardUtil(/dev/dvb/TBS6590-1/frontend1):
Delivery systems: DVB-S DVB-S2 DSS
2019-06-29 19:21:38.692738 I CardUtil: Current delivery system: DVB-S2
2019-06-29 19:21:38.692766 I CardUtil: Supported delivery systems: DVB-S
DVB-S2 DSS


}}}
Alain

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Jun 30, 2019, 3:48 AM
Post #2 of 9 (923 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: assigned
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Klaas de Waal):

* owner: Peter Bennett => Klaas de Waal
* status: new => assigned


Comment:

This is a problem that I cannot reproduce on today's master.

I have tested this by first changing the channel_timeout of the last card,
cardid 6, from 10000 to 11000 and then by changing the channel timeout of
the first card, cardid 1, from 10000 to 12000.
This is the result:

{{{
MariaDB [mythconverg]> select
cardid,videodevice,displayname,defaultinput,signal_timeout,channel_timeout
from capturecard;
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| cardid | videodevice | displayname | defaultinput |
signal_timeout | channel_timeout |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| 1 | /dev/dvb/adapter_tb0/frontend1 | TBS-S2 | Television |
7000 | 10000 |
| 2 | /dev/dvb/adapter_kc0/frontend0 | KC0 | Television |
3000 | 20000 |
| 3 | /dev/dvb/adapter41/frontend0 | DS0 | Television |
7000 | 10000 |
| 4 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 5 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 6 | /dev/dvb/adapter42/frontend0 | DS1 | Television |
7000 | 10000 |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
6 rows in set (0.001 sec)

MariaDB [mythconverg]> select
cardid,videodevice,displayname,defaultinput,signal_timeout,channel_timeout
from capturecard;
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| cardid | videodevice | displayname | defaultinput |
signal_timeout | channel_timeout |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| 1 | /dev/dvb/adapter_tb0/frontend1 | TBS-S2 | Television |
7000 | 10000 |
| 2 | /dev/dvb/adapter_kc0/frontend0 | KC0 | Television |
3000 | 20000 |
| 3 | /dev/dvb/adapter41/frontend0 | DS0 | Television |
7000 | 10000 |
| 4 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 5 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 6 | /dev/dvb/adapter42/frontend0 | DS1 | Television |
7000 | 11000 |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
6 rows in set (0.001 sec)

MariaDB [mythconverg]> select
cardid,videodevice,displayname,defaultinput,signal_timeout,channel_timeout
from capturecard;
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| cardid | videodevice | displayname | defaultinput |
signal_timeout | channel_timeout |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
| 1 | /dev/dvb/adapter_tb0/frontend1 | TBS-S2 | Television |
7000 | 12000 |
| 2 | /dev/dvb/adapter_kc0/frontend0 | KC0 | Television |
3000 | 20000 |
| 3 | /dev/dvb/adapter41/frontend0 | DS0 | Television |
7000 | 10000 |
| 4 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 5 | /dev/dvb/adapter_mg0/frontend0 | MG0 | Television |
3000 | 9000 |
| 6 | /dev/dvb/adapter42/frontend0 | DS1 | Television |
7000 | 11000 |
+--------+--------------------------------+-------------+--------------+----------------+-----------------+
6 rows in set (0.001 sec)


}}}

I suggest to delete all capturecards and create all capture cards again
with the mythtv-setup gui only. If the problem is still there, please give
an exact sequence on how to produce the problem so that it is possible to
recreate it.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:1>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Jul 4, 2019, 3:09 AM
Post #3 of 9 (917 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: infoneeded
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Klaas de Waal):

* status: assigned => infoneeded


--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:2>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Aug 1, 2019, 3:25 PM
Post #4 of 9 (906 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: assigned
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Klaas de Waal):

* status: infoneeded => assigned


Comment:

It is possible to segfault mythtv-setup with the following sequence:
- select existing capture card
- change "DVB device" name with "New entry" to a non-existing device
- Save then Exit
- select same capture card again
- change "DVB device" name to existing device, either with "New entry" or
by selecting a device from the list
- Save then Exit
Now there can be a segfault, or, when running with valgrind, lots of
errors appear. This is likely to be the cause of the reported problem. To
be continued.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:3>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Aug 17, 2019, 9:01 AM
Post #5 of 9 (892 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: assigned
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------

Comment (by Klaas de Waal):

The memory access errors leading to a segmentation fault can be reliably
created by the following sequence:
- select 2. Capture cards
- select (New capture card)
- Select New capture card
- Select DVB-S satellite card
- Select DiSEqC (Switch LNB and Rotor Confguration)
- Select LNB as Device Type
- Save then Exit
- select 2. Capture cards
- Select the same DVB-S satellite card created earlier
- Change DVB device to a device that is not a DVB-S card
- Save then Exit
When running with valgrind, an impressive amount of valgrind errors appear
now about memory that is accessed after it is free'ed.
If valgrind is not running there is often a segmentation fault now.

This is now temporarily fixed by not deleting the structure that is
mentioned in the valgrind messages. This does create a minor memory leak
but as this code is only used in mythtv-setup that is of little
consequence, and a memory leak is better then a segmentation fault.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:4>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Aug 17, 2019, 9:06 AM
Post #6 of 9 (892 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: assigned
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------

Comment (by Klaas de Waal <kdewaal@…>):

In [changeset:"adc2c4f0416d770fd4e1b22bc07719671ddc9cfd/mythtv"
adc2c4f041/mythtv]:
{{{
#!CommitTicketReference repository="mythtv"
revision="adc2c4f0416d770fd4e1b22bc07719671ddc9cfd"
Fix segfault in capture card editor

There can be a segmentation fault in the capture card editor
of mythtv-setup when configuring DVB-S satellite cards.
This happens when a capture card is changed from DVB-S,with
a configured input type of LNB (anything but not Unconnected),
to another type of DVB card.
After the capture card has been changed to a non-DVB-S type and
the DiSEqC tree has been deleted, a "Save then Exit" refers
to the already deleted DiSEqC tree. This creates a segmentation fault.
There are many more things to fix in the DiSEqC configuration
code and once this is done the "delete m_root" can be enabled again.
For now it is better to have a memory leak than a segmentation fault.

Refs #13465
}}}

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:5>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Aug 17, 2019, 9:07 AM
Post #7 of 9 (892 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: infoneeded
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution:
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Klaas de Waal):

* status: assigned => infoneeded


Comment:

Although in researching this ticket a segmentation fault has been found I
cannot find a way to reproduce the problem of this ticket, about the
rewrite of the "videodevice" field to /dev/dvb/adaptor0/frontend0 for all
cards except the one that is edited.

As suggested before, please delete all capturecards and create all capture
cards again with the mythtv-setup gui only. Change the capture card device
only by selecting from the list of devices instead of manually typing in a
device name.

If the problem is still there, please give an exact sequence on how to
produce the problem so that it is possible to recreate it.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:6>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
Dec 6, 2019, 12:07 PM
Post #8 of 9 (792 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: closed
Priority: minor | Milestone:
| needs_triage
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution: Unverified
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Klaas de Waal):

* status: infoneeded => closed
* resolution: => Unverified


Comment:

I cannot reproduce the problem described here and there is no further
information given about how to reproduce this bug on the latest master.
Therefore this ticket is now closed. If the problem appears again then
please re-open this ticket or create a new one.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:7>
MythTV <http://www.mythtv.org>
MythTV Media Center
Re: Ticket #13465: mythtv-setup rewrites all capturecard.videodevice to /dev/dvb/adapter0/frontend0 [ In reply to ]
noreply at mythtv
May 4, 2020, 7:38 AM
Post #9 of 9 (697 views)
Permalink
#13465: mythtv-setup rewrites all capturecard.videodevice to
/dev/dvb/adapter0/frontend0
---------------------------------------------+-----------------------------
Reporter: abrossard | Owner: Klaas de
| Waal
Type: Bug Report - General | Status: closed
Priority: minor | Milestone: unknown
Component: MythTV - Mythtv-setup | Version: Master Head
Severity: medium | Resolution: Unverified
Keywords: mythtv-setup 0.29, 0.30, master | Ticket locked: 0
---------------------------------------------+-----------------------------
Changes (by Stuart Auchterlonie):

* milestone: needs_triage => unknown


--
Ticket URL: <https://code.mythtv.org/trac/ticket/13465#comment:8>
MythTV <http://www.mythtv.org>
MythTV Media Center

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