[mythtv-users] el7 kernel update lost my tuners

[John Pilkington]

On 12/12/14 12:04, John Pilkington wrote:
> On 11/12/14 21:30, John Pilkington wrote:
>> I was beginning to think my el7 mythbox was settling down - but after
>> installing 3.10.0-123.13.1 today all my upcoming recordings were shown
>> as disabled.  3.10.0-123.9.3 was, and still appears to be, working fine.
>>
>> [john at HP_Box ~]$ dmesg | grep "registering adapter"
>> [   14.345933] usb 2-2: DVB: registering adapter 0 frontend 0 (Kworld
>> UB499-2T T09(IT9137)_1)...
>> [   14.991941] usb 2-2: DVB: registering adapter 1 frontend 0 (Kworld
>> UB499-2T T09(IT9137)_2)...
>> [   20.597036] saa7134 0000:07:04.0: DVB: registering adapter 2 frontend
>> 0 (Philips TDA10046H DVB-T)...
>> [john at HP_Box ~]$ uname -r
>> 3.10.0-123.9.3.el7.x86_64
>> [john at HP_Box ~]$
>> ================
Now, with all kernels, these messages appear briefly early in the boot 
process and no adapters are registered.

Unable to find symbol tda10046_attach()
Unable to find symbol it913x_fe_attach()

Things got worse, perhaps as a result of my investigations and, I 
suspect, of a 'quick boot' persistence exploit in SL7.  It seems that I 
can now get a working system, after updating /etc/modprobe.d, by 
unloading/reloading modules and unplugging/replugging the usb device. 
And I just had a (rare) series of brief power outages....

[john at HP_Box ~]$ uname -r
3.10.0-123.13.2.el7.x86_64
[john at HP_Box ~]$ cat /etc/modprobe.d/dvb.conf
alias symbol:tda10046_attach() tda1004x
alias symbol:it913x_fe_attach() it913x_fe

options saa7134_dvb adapter_nr=0
options dvb_usb_af9035 adapter_nr=1,2
==========

and then, after booting and as root,

modprobe -r saa7134_dvb
modprobe -r dvb-usb-af9035
modprobe    saa7134_dvb
modprobe    dvb-usb-af9035

All very messy, but it seems to work.

Posts on media-linux and sl-users got no responses.

For the record....

John