Program Guide DST offset is GMT and not Local

Bug #554972 reported by Steven Ellis
16
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MythTV
Unknown
Unknown
epgsnoop
New
Undecided
Unassigned
mythtv (Ubuntu)
Invalid
Medium
Unassigned

Bug Description

Binary package hint: mythtv

It appears that the MythTV Program Guide is using some additional logic to align the EPG data around DST changes but is using GMT rather than local time as the base.

This is particularly noticeable in NZ where the schedule was off by an hour until 3pm NZST or 3am GMT today.

I have been able to reproduce this problem under MythBuntu 9.10 with MythTV 0.22, and MythBuntu 10.04 Beta and MythTV 0.23.

To reproduce from a clean install, install Mythbuntu selecting NZ as your region and then set the local clock back to 9am on Sunday 4th April 2010.

Create a dummy Video Source with no grabber, and set the XMLTV offset to AUTO.

Create a channel with xmltvid 1036.dvb.guide.

Then import the attached XMLTV EPG data. All programs prior to 3pm are incorrectly loaded into the guide. For example Herbie Fully Loaded should start at 1:40pm and has been scheduled for 2:40pm.

I have confirmed that this issue wasn't present on an older Knoppmyth environment running MythTV 0.20 with the same EPG data.

Revision history for this message
Steven Ellis (steven-openmedia) wrote :
Revision history for this message
Steven Ellis (steven-openmedia) wrote :

This ticket has also been lodged in the MythTV Bug Tracker
 * http://svn.mythtv.org/trac/ticket/8286

Changed in mythtv:
status: Unknown → New
MarcRandolph (mrand)
Changed in mythtv:
status: New → Unknown
Changed in mythtv (Ubuntu):
importance: Undecided → Medium
status: New → Triaged
Changed in mythtv:
status: Unknown → New
Changed in mythtv:
status: New → Confirmed
Revision history for this message
Steven Ellis (steven-openmedia) wrote :

Patch has been added under http://svn.mythtv.org/trac/ticket/8217

Revision history for this message
Stuart Morgan (MythTV) (gbee) wrote :

Should be fixed in 0.27

Revision history for this message
Stuart Morgan (MythTV) (gbee) wrote :

I take that back, it won't be fixed in 0.27 because it's not a MythTV bug, the problem is the guide data which is specifying at incorrect offset of +1200 across the DST transition when it should switch to +1300 (or +1100)

Changed in mythtv:
status: Confirmed → Unknown
Revision history for this message
Karl Egly (dekarl) wrote :

I had a quick look at the xmltv file and it is generated by epgsnoop/0.11, so this bug may be fixable over there.

Revision history for this message
Stuart Morgan (MythTV) (gbee) wrote :

Epgsnoop bug

Changed in mythtv (Ubuntu):
status: Triaged → Invalid
Thomas Mashos (tgm4883)
Changed in mythtv (Ubuntu):
status: Invalid → Won't Fix
status: Won't Fix → Invalid
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