Re: net6501: Timer problems with Debian, no HPET support detected

Hi George,

perhaps you will do a list search for the following:

Author: Wim Vandeputte
Subject: [Soekris] net6501 - Linux 2.6.32-5-686 (Debian 2.6.32-35squeeze2)
= 2 messages

Author: Karl Auerbach
Subject: [Soekris] Linux on Net6501
= 2 messages

Is the bios from the Soekris net6501 ACPI conform? (If not shame on me)

Did you first install on another machine (Hardware) the OS and put this
medium (HDD/SSD) in the Soekris box?

<http://www.vdr-wiki.de/wiki/index.php/ACPI_Wakeup> is written in German but
declares the HEPT problematic
on some hardware at the example with Debian Linux very fine and shows some main
boards with and without support.

Or have a quick look at <https://bugzilla.kernel.org/show_bug.cgi?id=12013>
(English)

Did this main board have special options for enable and disable the HPET
in the bios and at the Soekris hardware this options should now be changed?

Wim Vandeputte was using the Debian 6.0 kernel version - 2.6.32-5-686 for a
test.
Karl Auerbach: wrote

>" I've now got Linux 3.0.8 up and running (in 32-bit mode) on the Net6501."
>"I had to apply the patch below to fix the kernel panic problem."

At some main boards HPET must be disabled by setting the kernel parameter
hpet=disabled,
it is not enough to discard this option during the kernel configuration, because
the RTC driver
does emulating a HPET device.

I hope this was helping you out.

--
Kind regards

Frank


> -----Original Message-----
> From: soekris-tech-bounces@... [mailto:soekris-tech-
> bounces@...] On Behalf Of George
> Sent: Saturday, March 10, 2012 12:31 PM
> To: soekris-tech@...
> Subject: [Soekris] net6501: Timer problems with Debian, no HPET support
detected
>
> Hi
>
> I tried Debian/Ubuntu with different kernels 2.6.32 and 2.6.38 on net6501-70
BIOS 1.41a.
> All do not detect the HPET.
>
> Kernel
>  timer interrupt frequency is approx. 1000 Hz instead of 4000 Hz or higher
with
> LowLatency kernel. Same kernels on other motherboards work fine.
>
> cat /proc/timer_list does not list hpet and shows
> .resolution: 999848 nsecs instead of 1 nsecs
>
> Any workaround?
>
> Regards George

 

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