Hi all,

[Please CC me, I'm not subscribed]

Can anyone tell me why hwclock --directisa works on this laptop (Dell
Inspirion) but /dev/rtc does not (linux 2.6.21 from Debian sid)?

# hwclock --directisa --show
Fri Jun 1 15:36:11 2007 -0.377827 seconds
# hwclock --show
select() to /dev/rtc to wait for clock tick timed out
# lspci | grep ISA
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
# lspci -n | grep 00:1f.0
00:1f.0 0601: 8086:27b9 (rev 01)

Is there a module udev isn't loading that it should be? Or do I need to
write a driver for it?

--
bye,
pabs

http://wiki.debian.org/PaulWise

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Paul Wise wrote:
> Hi all,
>
> [Please CC me, I'm not subscribed]
>
> Can anyone tell me why hwclock --directisa works on this laptop (Dell
> Inspirion) but /dev/rtc does not (linux 2.6.21 from Debian sid)?
>
> # hwclock --directisa --show
> Fri Jun 1 15:36:11 2007 -0.377827 seconds
> # hwclock --show
> select() to /dev/rtc to wait for clock tick timed out
> # lspci | grep ISA
> 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
> # lspci -n | grep 00:1f.0
> 00:1f.0 0601: 8086:27b9 (rev 01)
>
> Is there a module udev isn't loading that it should be? Or do I need to
> write a driver for it?
>

$ lsmod|grep rtc
rtc 12372 0

If you get no output, then the rtc driver has not loaded. But you don't
need to write one, try:

modprobe rtc

first. Then, if hwclock works, you may need to add the driver name to
the /etc/modules file.

--
Bob McGowan

On 06/04/2007 12:54 PM, Bob McGowan wrote:
> Paul Wise wrote:
>> Hi all,
>>
>> [Please CC me, I'm not subscribed]
>>
>> Can anyone tell me why hwclock --directisa works on this laptop (Dell
>> Inspirion) but /dev/rtc does not (linux 2.6.21 from Debian sid)?
>>
>> # hwclock --directisa --show
>> Fri Jun 1 15:36:11 2007 -0.377827 seconds
>> # hwclock --show
>> select() to /dev/rtc to wait for clock tick timed out
>> # lspci | grep ISA 00:1f.0 ISA bridge: Intel Corporation 82801GBM
>> (ICH7-M) LPC Interface Bridge (rev 01)
>> # lspci -n | grep 00:1f.0
>> 00:1f.0 0601: 8086:27b9 (rev 01)
>>
>> Is there a module udev isn't loading that it should be? Or do I need to
>> write a driver for it?
>>
>
> $ lsmod|grep rtc
> rtc 12372 0
>
> If you get no output, then the rtc driver has not loaded. But you don't
> need to write one, try:
>
> modprobe rtc
>
> first. Then, if hwclock works, you may need to add the driver name to
> the /etc/modules file.
>

Paul, if you use a Debian stock kernel, the rtc module is built by
default, and it should load automatically. Did you build your kernel
from the source?

Note: I'm a Sarge user.


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[please CC me, I'm not subscribed]

On Mon, 2007-06-04 at 13:36 -0500, Mumia W.. wrote:

> > $ lsmod|grep rtc
> > rtc 12372 0

# lsmod|grep rtc
rtc 12760 0

I have the rtc module loaded already and hwclock only works when
--directisa is used. For now I've modified /etc/default/rcS to add
--directisa to the HWCLOCKPARS variable, but it would be nice if this
worked out of the box.

> Paul, if you use a Debian stock kernel, the rtc module is built by
> default, and it should load automatically. Did you build your kernel
> from the source?

I use the stock Debian 2.6.21 kernel from sid. I recently moved my
Debian installation from my external hard drive to this new laptop, I
haven't seen this problem on other computers I've booted my external
hard drive on.

--
bye,
pabs

http://wiki.debian.org/PaulWise

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On 06/04/2007 06:12 PM, Paul Wise wrote:
> [please CC me, I'm not subscribed]
>
> On Mon, 2007-06-04 at 13:36 -0500, Mumia W.. wrote:
>
>>> $ lsmod|grep rtc
>>> rtc 12372 0 [...]

No I didn't write that. Bob McGowan wrote that. Please be more careful
with the attributions.


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Mumia W.. wrote:
> On 06/04/2007 06:12 PM, Paul Wise wrote:
>> [please CC me, I'm not subscribed]
>>
>> On Mon, 2007-06-04 at 13:36 -0500, Mumia W.. wrote:
>>
>>>> $ lsmod|grep rtc
>>>> rtc 12372 0 [...]
>
> No I didn't write that. Bob McGowan wrote that. Please be more careful
> with the attributions.
>
>

Apologies to Mumia and to Paul: I habitually removal of the original
poster's address and only reply to the list. So, habit bit even though
the explicit request was made to reply directly.

--
Bob McGowan
Symantec, Inc.

On Sun, 03 Jun 2007 14:31:43 +1000
Paul Wise <pabs@debian.org> wrote:

> Hi all,
>
> [Please CC me, I'm not subscribed]
>
> Can anyone tell me why hwclock --directisa works on this laptop (Dell
> Inspirion) but /dev/rtc does not (linux 2.6.21 from Debian sid)?
>
> # hwclock --directisa --show
> Fri Jun 1 15:36:11 2007 -0.377827 seconds
> # hwclock --show
> select() to /dev/rtc to wait for clock tick timed out
> # lspci | grep ISA
> 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
> # lspci -n | grep 00:1f.0
> 00:1f.0 0601: 8086:27b9 (rev 01)
>
> Is there a module udev isn't loading that it should be? Or do I need to
> write a driver for it?

I have the same issue with my Acer Aspire 3690-2672 laptop. I don't
know how to identify the rtc hardware, but the system seems similar to
yours; it's an Intel 82801G (ICH7) based system, and the lspci ISA
lines are the same as yours, except that mine's rev 02.

Anyway, there's an extensive discussion about the issue here:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=277298

> --
> bye,
> pabs

Celejar
--
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On Tue, 2007-06-05 at 08:21 -0700, Bob McGowan wrote:

> Apologies to Mumia and to Paul: I habitually removal of the original
> poster's address and only reply to the list. So, habit bit even though
> the explicit request was made to reply directly.

My fault, should have been more careful with my snipping.

--
bye,
pabs

http://wiki.debian.org/PaulWise

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