Bug 1133243 - w_scan fails to produce correct initial tuning data for Sudbury tramsitter (UK)
Summary: w_scan fails to produce correct initial tuning data for Sudbury tramsitter (UK)
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: w_scan
Version: 19
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Felix Kaechele
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-08-23 18:09 UTC by Oliver Henshaw
Modified: 2015-02-18 11:49 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2015-02-18 11:49:04 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
"w_scan -c GB -x -I /usr/share/dvb/dvb-t/uk-Sudbury" output (11.41 KB, text/plain)
2014-08-23 18:09 UTC, Oliver Henshaw
no flags Details

Description Oliver Henshaw 2014-08-23 18:09:44 UTC
Created attachment 929989 [details]
"w_scan -c GB -x -I /usr/share/dvb/dvb-t/uk-Sudbury" output

Description of problem:

"w_scan -x" reads wrong multiplex frequencies from the NIT data and writes out nonsense tuning data that doesn't match the initial tuning data. I don't know if this is just bad data from the Sudbury transmitter or some parsing weirdness, but e.g. scandvb from the dvb-apps package sees the same wrong frequencies when scanning for services.


Version-Release number of selected component (if applicable):

w_scan-20140118-1.fc19.x86_64
dtv-scan-tables-0-5.20140309git177b522.fc19.noarch


How reproducible:

$ w_scan -c GB -x -I /usr/share/dvb/dvb-t/uk-Sudbury

reads weird multiplex frequencies out of the NIT tables. These frequencies don't seem to correspond to any local multiplex,and trying to tune to them gets absolutely no result. (By comparison, tuning to the very distant and weak Bluebell Hill transmitter at least gets enough signal to read back the multiplex frequencies).

w_scan does successfuly find services on the real frequencies (those in the initial tuning data) however.


Additional info:

Note that scanning of the other local transmitter (Crystal Palace) succeeds without issue for w_scan-20140118-1.fc19.x86_64, but see bug #1133240 for problems with the latest version.

The installed dtv-scan-tables is slightly out of data compared to upstream, but there's absolutely no change for the Sudbury transmitter, iirc.

Comment 1 Fedora End Of Life 2015-01-09 21:29:40 UTC
This message is a notice that Fedora 19 is now at end of life. Fedora 
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Comment 2 Fedora End Of Life 2015-02-18 11:49:04 UTC
Fedora 19 changed to end-of-life (EOL) status on 2015-01-06. Fedora 19 is
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