Fedora 19 assistance on modprobe /etc/modprobe.d/ .conf file being ignored

[Ed Greshko]

On 02/25/14 07:56, dennismccloud at earthlink.net wrote:
> I need some assistance in troubleshooting problem with passing a modprobe parameter to the lirc_zilog module.
>
> I'm running Fedora 19 with the most recent updates:
>
> # uname -r
> 3.12.11-201.fc19.x86_64
>
> I have a file /etc/modprobe.d/lirc_zilog.conf file that contains the following:
>
> # cat /etc/modprobe.d/lirc_zilog.conf
> options lirc_zilog tx_only=1
>
> This file previously worked to disable the IR receive mode on the lirc_zilog module but something seems to have changed to prevent this from happening.
>
> The above parameter is being ignored since the lirc_zilog module is running both transmit and receive.
>
> Here is the command to receive IR signals:
>
> #irw
> 00000000000017b5 00 play Hauppauge
> 00000000000017b5 01 play Hauppauge
> 00000000000017b5 02 play Hauppauge
>
> The lirc_zilog module is being loaded at system boot time:
>
> # lsmod | grep lirc
> lirc_zilog             22473  0
> i2c_core               38476  8 drm,i915,i2c_i801,hdpvr,lirc_zilog,drm_kms_helper,i2c_algo_bit,videodev
> lirc_dev               19504  1 lirc_zilog
> rc_core                26896  1 lirc_dev
>
> The systemd-modules-load.service appears to have completed normally:
>
> # systemctl status systemd-modules-load.service
> systemd-modules-load.service - Load Kernel Modules
>    Loaded: loaded (/usr/lib/systemd/system/systemd-modules-load.service; static)
>    Active: active (exited) since Mon 2014-02-24 18:06:33 EST; 1min 46s ago
>      Docs: man:systemd-modules-load.service(8)
>            man:modules-load.d(5)
>   Process: 214 ExecStart=/usr/lib/systemd/systemd-modules-load (code=exited, status=0/SUCCESS)
>
> Feb 24 18:06:32 divo systemd[1]: Starting Load Kernel Modules...
>
> The tx_only option is a valid option for lirc_zilog:
>
> # modinfo lirc_zilog
> filename:       /lib/modules/3.12.11-201.fc19.x86_64/kernel/drivers/staging/media/lirc/lirc_zilog.ko
> alias:          lirc_pvr150
> license:        GPL
> author:         Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller, Stefan Jahn, Jerome Brock, Mark Weaver, Andy Walls
> description:    Zilog/Hauppauge infrared transmitter driver (i2c stack)
> depends:        i2c-core,lirc_dev
> staging:        Y
> intree:         Y
> vermagic:       3.12.11-201.fc19.x86_64 SMP mod_unload
> signer:         Fedora kernel signing key
> sig_key:        FC:A0:01:2C:8A:A6:A3:A0:0F:CC:4E:16:E4:8C:17:FD:D9:C6:31:21
> sig_hashalgo:   sha256
> parm:           minor:Preferred minor device number (int)
> parm:           debug:Enable debugging messages (bool)
> parm:           tx_only:Only handle the IR transmit function (bool)
>
> I can manually unload the lirc_zilog module and manually reload lirc_zilog with the tx_only=1 option and lirc_zilog module works as desired with IR receive disabled.
>
> I've tried various filenames.conf and the different directories (/lib/modprobe.d) for modprobe without success.
>
> If I run dmesg and grep for IR, I see that lirc_zilog is probing for IR Rx and IR Tx.
>
> [Mon Feb 24 18:06:34 2014] lirc_zilog: probing IR Rx on Hauppage HD PVR I2C (i2c-8)
> [Mon Feb 24 18:06:34 2014] lirc_zilog: probe of IR Rx on Hauppage HD PVR I2C (i2c-8) done. Waiting on IR Tx.
> [Mon Feb 24 18:06:34 2014] lirc_zilog: probe of IR Rx on Hauppage HD PVR I2C (i2c-8) done
> [Mon Feb 24 18:06:34 2014] lirc_zilog: probing IR Tx on Hauppage HD PVR I2C (i2c-8)
> [Mon Feb 24 18:06:34 2014] lirc_zilog: IR unit on Hauppage HD PVR I2C (i2c-8) registered as lirc0 and ready
> [Mon Feb 24 18:06:34 2014] lirc_zilog: probe of IR Tx on Hauppage HD PVR I2C (i2c-8) done
>
> Previously when the tx_only=1 option was being properly processes, the lirc_zilog module was only probing for IR Tx.
>
> Looking at the systemd entries from dmesg doesn't give any hints for why the lirc_zilog.conf options file isn't being read.
>
> Looking at the output from journalctl -b doesn't provide any clues.
>
> I've exhausted my ability to troubleshoot the systemd-modules-load.service to see the details of what is going on during the boot process.
>
> I need help with how to enable debug on the systemd-modules-load process or help of where to look next to resolve this issue.
>
> Thanks in advance for any assistance you can provide.

I think you're saying that if you manually unload the module and then load it the .conf file is honored and loaded as you want.

If so, did you run dracut to create a new initramfs with the changes you made?

-- 
Getting tired of non-Fedora discussions and self-serving posts