From: Robert Hancock <hancockrwd@gmail.com>
To: Udo van den Heuvel <udovdh@xs4all.nl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: hpet timers gone?
Date: Sun, 30 May 2010 12:51:23 -0600 [thread overview]
Message-ID: <4C02B3AB.3040405@gmail.com> (raw)
In-Reply-To: <4C021507.6020703@xs4all.nl>
On 05/30/2010 01:34 AM, Udo van den Heuvel wrote:
>
>> Have you enabled ACPI in the BIOS and kernel config? AFAIK, HPET
>> timers, need some backup timers, for HPET to be enabled.
>
> ACPI is enabled. APM is disabled.
>
> Epia LT BIOS is at 1.01 presumably. BIOS update to 1.03 fails as
> vf-1.02.exe, presumably due to freedos, does not recognise the VIA board
> and complains about it.
>
> Also due to board swap last year it can be the case that HPET has so far
> not worked at all on EPIA LT.
>
> The board has VIA C7 CPU and VIA CX700M2 Unified Digital Media IGP
> chipset which supports HPET.
>
> Can it be that the kernel lacks support for CX700 hpet?
> Or is it a matter of getting the BIOS upgrade to work?
Your current BIOS doesn't provide an HPET ACPI table, which is the way
it's supposed to indicate support. The kernel only supports
force-enabling HPET on VIA for VT8235 and VT8237.
next prev parent reply other threads:[~2010-05-30 18:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-24 10:19 hpet timers gone? Udo van den Heuvel
2010-05-26 19:02 ` Randy Dunlap
2010-05-29 4:29 ` Udo van den Heuvel
2010-05-30 7:34 ` Udo van den Heuvel
2010-05-30 18:51 ` Robert Hancock [this message]
[not found] ` <4C0324B8.8070304@xs4all.nl>
[not found] ` <AANLkTikuaPxA9Xnzc1bCJ5YHRlPZ1AcBSrYJ5lqryaMY@mail.gmail.com>
2010-09-13 14:52 ` Udo van den Heuvel
2010-09-13 15:30 ` Udo van den Heuvel
2010-09-13 16:05 ` Udo van den Heuvel
2010-09-13 23:16 ` Robert Hancock
2010-09-14 5:15 ` patch: HPET force enable for CX700 / VIA Epia LT was: " Udo van den Heuvel
2010-09-15 14:37 ` [tip:x86/quirks] x86: HPET force enable for CX700 / VIA Epia LT tip-bot for Udo van den Heuvel
-- strict thread matches above, loose matches on Subject: below --
2010-05-29 11:16 hpet timers gone? uwaysi.bin.kareem
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