* Kernel module arguments and custom /proc settings
@ 2016-07-24 4:05 Adam Bolte
2016-07-25 20:47 ` Ludovic Courtès
2016-07-25 21:09 ` Andreas Enge
0 siblings, 2 replies; 6+ messages in thread
From: Adam Bolte @ 2016-07-24 4:05 UTC (permalink / raw)
To: help-guix
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Hello,
I have a machine that always overheats running GuixSD, and I would
like the fans to constantly run at maximum until I can find a better
solution.
The kernel module that enables fan control is thinkpad_acpi (which is
always loaded automatically), howerver manual fan control only works
if I set the module fan_control=1 argument when it loads. So I'm
looking for the equivalent of /etc/modprobe.d/ on Debian.
The module creates /proc/acpi/ibm/fan, which I can then write to (if
fan_control=1 was set) with the appropriate fan speed. I want to run
the equivalent of the following on boot:
# echo level full-speed > /proc/acpi/ibm/fan
In Debian this can be done by dropping the configuration into
/etc/sysctl.d/.
Is there a way to edit my config.scm file to make the above changes?
-Adam
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Kernel module arguments and custom /proc settings
2016-07-24 4:05 Kernel module arguments and custom /proc settings Adam Bolte
@ 2016-07-25 20:47 ` Ludovic Courtès
2016-07-28 13:09 ` Adam Bolte
2016-07-25 21:09 ` Andreas Enge
1 sibling, 1 reply; 6+ messages in thread
From: Ludovic Courtès @ 2016-07-25 20:47 UTC (permalink / raw)
To: Adam Bolte; +Cc: help-guix
Hi,
Adam Bolte <abolte@systemsaviour.com> skribis:
> I have a machine that always overheats running GuixSD, and I would
> like the fans to constantly run at maximum until I can find a better
> solution.
>
> The kernel module that enables fan control is thinkpad_acpi (which is
> always loaded automatically), howerver manual fan control only works
> if I set the module fan_control=1 argument when it loads. So I'm
> looking for the equivalent of /etc/modprobe.d/ on Debian.
>
> The module creates /proc/acpi/ibm/fan, which I can then write to (if
> fan_control=1 was set) with the appropriate fan speed. I want to run
> the equivalent of the following on boot:
>
> # echo level full-speed > /proc/acpi/ibm/fan
>
> In Debian this can be done by dropping the configuration into
> /etc/sysctl.d/.
>
> Is there a way to edit my config.scm file to make the above changes?
Not really.
Looking at libkmod, it seems that /run/modprobe.d is automatically
scanned, like /etc/modprobe.d on Debian. Could you try writing the
following in /run/modprobe.d/fan.conf:
--8<---------------cut here---------------start------------->8---
options thinkpad_acpi fan_control=1
--8<---------------cut here---------------end--------------->8---
and then rebooting?
If everything goes well, this .conf file will be taken into account when
udev asks to load ‘thinkpad_acpi’.
Eventually we should provide a way to specify /run/modprobe.d entries
via the ‘operating-system’ config, though.
HTH!
Ludo’.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Kernel module arguments and custom /proc settings
2016-07-24 4:05 Kernel module arguments and custom /proc settings Adam Bolte
2016-07-25 20:47 ` Ludovic Courtès
@ 2016-07-25 21:09 ` Andreas Enge
2016-07-28 13:13 ` Adam Bolte
1 sibling, 1 reply; 6+ messages in thread
From: Andreas Enge @ 2016-07-25 21:09 UTC (permalink / raw)
To: Adam Bolte; +Cc: help-guix
Hello,
On Sun, Jul 24, 2016 at 02:05:28PM +1000, Adam Bolte wrote:
> I have a machine that always overheats running GuixSD, and I would
> like the fans to constantly run at maximum until I can find a better
> solution.
a somewhat naive suggestion, since I did not yet try it myself: Could you
use fancontrol from the lm-sensors package? We might need to write a service
for it anyway for our new main server.
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Kernel module arguments and custom /proc settings
2016-07-25 20:47 ` Ludovic Courtès
@ 2016-07-28 13:09 ` Adam Bolte
2016-07-28 15:24 ` Ludovic Courtès
0 siblings, 1 reply; 6+ messages in thread
From: Adam Bolte @ 2016-07-28 13:09 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: help-guix
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Sorry for the delay in my response. I've only just found the time to
try your suggestion and reply.
On Mon, Jul 25, 2016 at 10:47:36PM +0200, Ludovic Courtès wrote:
> Could you try writing the following in /run/modprobe.d/fan.conf:
>
> --8<---------------cut here---------------start------------->8---
> options thinkpad_acpi fan_control=1
> --8<---------------cut here---------------end--------------->8---
>
> and then rebooting?
>
> If everything goes well, this .conf file will be taken into account when
> udev asks to load ‘thinkpad_acpi’.
I can confirm that this worked fine. Thanks!
> Eventually we should provide a way to specify /run/modprobe.d entries
> via the ‘operating-system’ config, though.
Sounds good. As someone who comes from a background in configuration
management, I would much rather have the entire system configuration
defined in a state configuration file than do manual once-off edits
(which is a part of what has attracted me to the project).
Now I just need to figure out how to set /proc entries on boot. I
guess I need to write a "service" for that, although I'm currently a
complete a noob at Scheme. Actually, that's why I purchased this X60
100% free software-compatible laptop - so I could better experiment
and learn these technologies.
Ultimately there are a number of programs I use under Debian which I
would like to create Guix packages for when I'm more comfortable with
how it all works. Then it's just a matter of finding the time to read
and experiment. :)
Cheers,
Adam
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Kernel module arguments and custom /proc settings
2016-07-25 21:09 ` Andreas Enge
@ 2016-07-28 13:13 ` Adam Bolte
0 siblings, 0 replies; 6+ messages in thread
From: Adam Bolte @ 2016-07-28 13:13 UTC (permalink / raw)
To: Andreas Enge; +Cc: help-guix
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On Mon, Jul 25, 2016 at 11:09:41PM +0200, Andreas Enge wrote:
> On Sun, Jul 24, 2016 at 02:05:28PM +1000, Adam Bolte wrote:
> > I have a machine that always overheats running GuixSD, and I would
> > like the fans to constantly run at maximum until I can find a better
> > solution.
>
> a somewhat naive suggestion, since I did not yet try it myself:
> Could you use fancontrol from the lm-sensors package? We might need
> to write a service for it anyway for our new main server.
Good question! I'll try to read up on the fancontrol daemon over the
weekend, and will report back if I have any luck with it. Thanks.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Kernel module arguments and custom /proc settings
2016-07-28 13:09 ` Adam Bolte
@ 2016-07-28 15:24 ` Ludovic Courtès
0 siblings, 0 replies; 6+ messages in thread
From: Ludovic Courtès @ 2016-07-28 15:24 UTC (permalink / raw)
To: Adam Bolte; +Cc: help-guix
Hi,
Adam Bolte <abolte@systemsaviour.com> skribis:
> On Mon, Jul 25, 2016 at 10:47:36PM +0200, Ludovic Courtès wrote:
>> Could you try writing the following in /run/modprobe.d/fan.conf:
>>
>> --8<---------------cut here---------------start------------->8---
>> options thinkpad_acpi fan_control=1
>> --8<---------------cut here---------------end--------------->8---
>>
>> and then rebooting?
>>
>> If everything goes well, this .conf file will be taken into account when
>> udev asks to load ‘thinkpad_acpi’.
>
> I can confirm that this worked fine. Thanks!
Good!
>> Eventually we should provide a way to specify /run/modprobe.d entries
>> via the ‘operating-system’ config, though.
>
> Sounds good. As someone who comes from a background in configuration
> management, I would much rather have the entire system configuration
> defined in a state configuration file than do manual once-off edits
> (which is a part of what has attracted me to the project).
Agreed.
> Now I just need to figure out how to set /proc entries on boot. I
> guess I need to write a "service" for that, although I'm currently a
> complete a noob at Scheme.
Right, you need a service that extends ‘activation-service-type’ with a
snippet along the lines of:
#~(call-with-output-file "/proc/something"
(lambda (port)
(display "whatever" port)))
Hopefully people can provide more guidance on IRC or on this list.
> Actually, that's why I purchased this X60 100% free
> software-compatible laptop - so I could better experiment and learn
> these technologies.
>
> Ultimately there are a number of programs I use under Debian which I
> would like to create Guix packages for when I'm more comfortable with
> how it all works. Then it's just a matter of finding the time to read
> and experiment. :)
Sounds good. :-)
Thanks for your feedback,
Ludo’.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2016-07-24 4:05 Kernel module arguments and custom /proc settings Adam Bolte
2016-07-25 20:47 ` Ludovic Courtès
2016-07-28 13:09 ` Adam Bolte
2016-07-28 15:24 ` Ludovic Courtès
2016-07-25 21:09 ` Andreas Enge
2016-07-28 13:13 ` Adam Bolte
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