[mythtv-users] Interesting update

Jan Ceuleers jan.ceuleers at gmail.com
Sun Jul 8 15:58:37 UTC 2018


On 08/07/18 16:01, Stephen Worthington wrote:
> On Sun, 8 Jul 2018 08:46:52 -0400, you wrote:
> 
>> On 7/7/2018 10:21 PM, Stephen Worthington wrote:
>>> On Sat, 7 Jul 2018 21:57:05 -0400, you wrote:
>>>
>>>> Jul  7 21:04:36 nick kernel: [   41.946059] lircd[835]: segfault at 8 ip
>>>> 0000000000427cd0 sp 00007ffc3475f148 error 4 in lircd[400000+35000]
>>> This looks like the problem.  Lircd crashed on a segfault.
>>>
>> Coincidentally, I had a short power fail this morning and had to start 
>> my box from scratch; remotes stopped working again.
>>
>> I just found this, sounds like a good chance it's the culprit:
>>
>> 4.15.0 update breaks LIRC
>> https://answers.launchpad.net/ubuntu/+question/670733
>>
>> I rebooted and picked the earlier kernel (4.13.0-45), remotes work 
>> fine.  How do we check to see if it's been reported as a bug?
>>
>> Don
> 
> What operating system are you running?  Your version of LIRC is rather
> old (0.9.0), which is what Ubuntu 16.04 uses.  That suggests that you
> are using Ubuntu 16.04 in some form.  But to get a 4.15 kernel on
> Ubuntu 16.04, you must have upgraded it.  Somewhere between 16.04 and
> 18.04, a proper up-to-date version of LIRC was introduced, and I think
> it is likely to not have this problem.  It is likely only the
> combination of a fairly new kernel and the old 0.9.0 LIRC that is
> causing this.

Note that Ubuntu 16.04's original kernel was 4.4. But Ubuntu are now
tracking more recent kernel versions in subsequent point releases. The
16.04.5 point release upgraded the kernel from 4.13 to 4.15.

More here:

https://wiki.ubuntu.com/Kernel/LTSEnablementStack

HTH, Jan


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