Re: Lenovo T500 hang

[David Brownlee <abs%absd.org@localhost>]

On 3 June 2016 at 10:11, Stephen Borrill <netbsd%precedence.co.uk@localhost> wrote:
>
> On Thu, 2 Jun 2016, Roy Marples wrote:
>>
>> On 2016-06-01 10:54, Stephen Borrill wrote:
>>>
>>> Somewhere after 7.0_RC2, a problem started where the machine hangs
>>> right at the end of the kernel boot just before it prints the boot
>>> device:
>>>
>>> pad0: outputs: 44100Hz, 16-bit, stereo
>>> audio1 at pad0: half duplex, playback, capture
>>> *** HANGS HERE ***
>>> boot device: wd0
>>> root on wd0a dumps on wd0b
>>>
>>> The only thing to do is to power the machine off. This happens with
>>> all later kernels (including -current).
>>>
>>> I've not had chance to bisect the sources yet as I need to use the
>>> machine for real work (and running NetBSD 7 on it also makes it so hot
>>> it burns my legs).
>>>
>>> I think a few users (and developers) have Lenovo T500 laptops. Does
>>> any recent NetBSD work for them?
>>
>>
>> I have a T500 which is my main NetBSD dev machine.
>
>
> Do you have a dmesg? Perhaps yours is a model without switchable graphics or the 3G modem, etc.
>
>> I haven't updated the kernel in a month or so, but it's been running -current very well.
>
>
> Does it run at a sensible temperature? Mine runs very hot and runs the battery down very quickly.
>
>> I don't recall if it ever ran anything earlier than a 7.0 release though.
>
>
> I've been using mine since the netbsd-5 and this problem just started.


As a random thought has the machdep.est.frequency settings changed for
it since netbsd-5? - might it possibly be picking a higher default
value? Do you use sysutils/estd (I have a T420s and that definitely
helped with how often my CPU fan maxes out)