* /proc/sys/kernel/hotplug empty: how to configure kernel?
@ 2006-12-20 21:50 Richard Wild
2006-12-20 22:09 ` Greg KH
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: Richard Wild @ 2006-12-20 21:50 UTC (permalink / raw)
To: linux-hotplug
Hi all,
the subject line should say it all really. I have this problem:
rich@radhagovinda:~$ cat /proc/sys/kernel/hotplug
rich@radhagovinda:~$
I know that this 'file' should contain the name of the hotplug helper
program, which on my machine is /sbin/hotplug, but it doesn't.
The kernel is an unpatched 2.6.18 kernel I configured and compiled from
source myself. I did enable CONFIG_HOTPLUG, as you can see:
source@radhagovinda:/usr/local/src/linux-2.6.18$ cat .config | grep HOTPLUG
CONFIG_HOTPLUG=y
source@radhagovinda:/usr/local/src/linux-2.6.18$
but clearly this is not all there is to it. I have good reason to
believe it is a misfigured kernel problem, because if I boot to the
2.4.33.3 kernel supplied with my distro (Slackware 11.0) then everything
works great.
Any pointers are gratefully received. I found this
http://linux-usb.sourceforge.net/usb-admin.html which told me to enable
ALL usb options as modules, but it made no difference.
Sorry for posting to the devel mailing list, but it's the only one you have.
Many thanks,
Richard.
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: /proc/sys/kernel/hotplug empty: how to configure kernel?
2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
@ 2006-12-20 22:09 ` Greg KH
2006-12-20 22:15 ` Kay Sievers
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Greg KH @ 2006-12-20 22:09 UTC (permalink / raw)
To: linux-hotplug
On Wed, Dec 20, 2006 at 09:50:22PM +0000, Richard Wild wrote:
> Hi all,
>
> the subject line should say it all really. I have this problem:
>
> rich@radhagovinda:~$ cat /proc/sys/kernel/hotplug
>
I don't see a problem there, most distros do it this way now.
They listen to the uevent socket from the kernel for the events, and
don't rely on the hotplug process being spawned again and again.
What distro is this?
And why are you thinking things are not working?
thanks,
greg k-h
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: /proc/sys/kernel/hotplug empty: how to configure kernel?
2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
2006-12-20 22:09 ` Greg KH
@ 2006-12-20 22:15 ` Kay Sievers
2006-12-20 22:18 ` Richard Wild
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Kay Sievers @ 2006-12-20 22:15 UTC (permalink / raw)
To: linux-hotplug
On 12/20/06, Richard Wild <richard-wild@ntlworld.com> wrote:
> Hi all,
>
> the subject line should say it all really. I have this problem:
>
> rich@radhagovinda:~$ cat /proc/sys/kernel/hotplug
Usually the udev boot-script disables the "/sbin/hotplug fork-bomb",
as it's not needed on a udev system, and causes trouble for a lot of
devices. It's all handles by the udevd daemon.
Kay
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: /proc/sys/kernel/hotplug empty: how to configure kernel?
2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
2006-12-20 22:09 ` Greg KH
2006-12-20 22:15 ` Kay Sievers
@ 2006-12-20 22:18 ` Richard Wild
2006-12-20 22:51 ` Greg KH
2006-12-20 23:03 ` Robby Workman
4 siblings, 0 replies; 6+ messages in thread
From: Richard Wild @ 2006-12-20 22:18 UTC (permalink / raw)
To: linux-hotplug
Greg KH wrote:
> What distro is this?
>
Slackware 11.0.
> And why are you thinking things are not working?
Because I can't get my digital camera to work:
rich@radhagovinda:~$ gphoto2 --auto-detect
Model Port
----------------------------------------------------------
rich@radhagovinda:~$
That is what I am trying to do. If I boot into the default 2.4 kernel,
it does work. Also I notice that the boot-up message "Detecting
hardware: /etc/rc.d/rc.hotplug" does not appear when I boot my 2.6
kernel, although it does appear when I boot the 2.4 kernel.
If I run it myself:
root@radhagovinda:~# /etc/rc.d/rc.hotplug start
root@radhagovinda:~#
it seems to do nothing. I realise this might be a Slackware script and
not something the Hotplug project wrote. But I am quite stumped.
Thanks,
Rich.
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: /proc/sys/kernel/hotplug empty: how to configure kernel?
2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
` (2 preceding siblings ...)
2006-12-20 22:18 ` Richard Wild
@ 2006-12-20 22:51 ` Greg KH
2006-12-20 23:03 ` Robby Workman
4 siblings, 0 replies; 6+ messages in thread
From: Greg KH @ 2006-12-20 22:51 UTC (permalink / raw)
To: linux-hotplug
On Wed, Dec 20, 2006 at 10:18:08PM +0000, Richard Wild wrote:
> Greg KH wrote:
> >What distro is this?
> >
> Slackware 11.0.
> >And why are you thinking things are not working?
> Because I can't get my digital camera to work:
>
> rich@radhagovinda:~$ gphoto2 --auto-detect
> Model Port
> ----------------------------------------------------------
> rich@radhagovinda:~$
>
> That is what I am trying to do. If I boot into the default 2.4 kernel,
> it does work. Also I notice that the boot-up message "Detecting
> hardware: /etc/rc.d/rc.hotplug" does not appear when I boot my 2.6
> kernel, although it does appear when I boot the 2.4 kernel.
>
> If I run it myself:
>
> root@radhagovinda:~# /etc/rc.d/rc.hotplug start
> root@radhagovinda:~#
>
> it seems to do nothing. I realise this might be a Slackware script and
> not something the Hotplug project wrote. But I am quite stumped.
I suggest asking on a slackware specific mailing list, as this is a
distro specific thing.
good luck,
greg k-h
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: /proc/sys/kernel/hotplug empty: how to configure kernel?
2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
` (3 preceding siblings ...)
2006-12-20 22:51 ` Greg KH
@ 2006-12-20 23:03 ` Robby Workman
4 siblings, 0 replies; 6+ messages in thread
From: Robby Workman @ 2006-12-20 23:03 UTC (permalink / raw)
To: linux-hotplug
Greg KH wrote:
> I suggest asking on a slackware specific mailing list, as this is a
> distro specific thing.
Greg and list,
I have referred Rick to a Slackware list - if we can't figure it out there,
and it indeed turns out to be hotplug/udev-specific instead of Slackware,
we'll come back.
Thanks,
RW
--
http://rlworkman.net
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^ permalink raw reply [flat|nested] 6+ messages in thread
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2006-12-20 21:50 /proc/sys/kernel/hotplug empty: how to configure kernel? Richard Wild
2006-12-20 22:09 ` Greg KH
2006-12-20 22:15 ` Kay Sievers
2006-12-20 22:18 ` Richard Wild
2006-12-20 22:51 ` Greg KH
2006-12-20 23:03 ` Robby Workman
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