[mythtv-users] el7 kernel update lost my tuners

[John Pilkington]

On 14/01/15 11:46, John Pilkington wrote:
> 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

New kernel today,  3.10.0-123.20.1.el7.x86_64

I didn't see any missing-symbols messages and the drivers were 
installed, but the adapter_nr  options in modprobe.d were ignored.  I 
was able to get the numbering I wanted by unplugging the usb device, 
installing the module for the pci device, and then re-inserting the usb 
stick...

Re-sending this; an attempt to post at 10:54 UTC today seem to have failed,