[mythtv-users] master: DVB-T segfaults in mythtv-setup and mythbackend

John Pilkington johnpilk222 at gmail.com
Mon Feb 1 15:52:35 UTC 2021

On 01/02/2021 11:27, John Pilkington wrote:

>>> I have tried retuning the el7 box but that segfaults before the end 
>>> of an 'all transports' scan. 
>> Now reverted to last week's build.
> ... to continue.  I left the Fedora 32 box building and recording 
> overnight, and now have master f53465d running (under a new kernel).
> I rescanned both tuners and have edited the recordings with no problems 
> seen.  The cutlist editor didn't crash or have any noticeable hangups, 
> so all seems well.  I didn't see the problem reported by Klaas either.
> So I'll try another brew for el7...
> Thanks,
> John P

The new build gives this same set of warnings on leaving mythtv-setup. 
I saw something very similar in the ubuntu 18.04 master ppa last 
Thursday, but don't have that box now.


2021-02-01 14:40:17.570 I  Clearing OpenGL painter cache.
2021-02-01 14:40:17.570 I  OpenGL: MythRenderOpenGL closing
2021-02-01 14:40:17.572 I  Display: Deleting
2021-02-01 14:40:17.575 I  PowerDBus: Closing interfaces
2021-02-01 14:40:17.583 C  'SSDP': MThread epilog was never run! (SSDP)
2021-02-01 14:40:17.583 C  'SSDP': MThread destructor called while 
thread still running! (SSDP)
Handling Illegal instruction
Illegal instruction


A channel scan starts but segfaults after around 5 transports,as below. 
I haven't tried running mythbackend again.


2021-02-01 15:17:45.736 I  CardUtil[1]: Set delivery system: DVB-T
2021-02-01 15:19:17.740 C  'DVBRead': MThread epilog was never run! 
2021-02-01 15:19:17.740 C  'DVBRead': MThread destructor called while 
thread still running! (DVBRead)
Handling Segmentation fault
Segmentation fault


This el7 build from 24 Jan runs well: 
mythtv-32.Pre.2062.g03dd08c3eb-100.el7.x86_64.rpm  That was before the 
std::chrono updates.

and today's master in F32 is probably better (cutlist editor less likely 
to hang)

el7 has gssdp v 1.0.2-1 from SL security.  F32 has v 1.0.5-1

I suppose all this just underlines the need to move on from el7, but it 
looks to me as if 'buntu 18.04 has it too.

John P

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