Kubuntu/Ubuntu does not remove everything from memory at shutdown

[Steve Morris]

On 14/03/10 06:12, Reinhold Rumberger wrote:
> On Saturday 13 March 2010, Mark Greenwood wrote:
>    
>> You're completely ignoring the information before you. You're not
>> the only one, this is exactly the reason I gave up with my
>> original bug report.
>>
>> Let me see if I can explain it any more clearly. Perhaps something
>> is being lost in translation.
>>
>> With a choice of three OSs, the only combination that does not
>> work is when I boot *from* Kubuntu into another.
>>      
> I've kinda been replying to Steve and not you; for him the only
> combination that does not work is the Kubuntu->Win7, for which he is
> apparently using an unsupported driver.
> IOW, this seems to be a different issue from yours, which is why I'm
> ignoring any info you gave while I'm concerning myself with *his*
> problem - it just doesn't apply. Also, this thread is kinda long and
> I can't keep everything in mind.
>
>    
>> The only common
>> factor in every failing case is that I *start* in Kubuntu. How
>> many more ways can I explain it? There is only one logical
>> conclusion from this, and it is that Kubuntu is doing something
>> different.
>>
>> This is supported by the observable facts. When I reboot from
>> Windows or Mandriva, my laptop does a proper restart - I see the
>> BIOS POST screen and I get a little beep, like I do when I switch
>> it on. When I reboot from Kubuntu, I never see the BIOS POST
>> screen and I do not get the beep; Kubuntu goes directly from its
>> shutdown screen to the Grub menu, and this clearly leaves the
>> hardware in an unstable state because most of it doesn't work
>> properly afterwards, in any OS.
>>      
> OK, this seems *really* strange. For me, rebooting from Kubuntu
> passes the BIOS POST screen. I have no other OS installed to try out,
> but using a live OS like Knoppix has never caused me any problems,
> sound or otherwise.
>
>    
>> Do you now accept that Kubuntu is not resetting my hardware
>> properly when I choose 'Restart Computer'.
>>      
> I never doubted (or concerned myself with) your problem, so I can't
> really "come around"... ;-)
> I just don't know enough to really be of any help.
>
>    
>> This only applies on my Sony laptop. My Acer laptop and my desktop
>> reset properly. I know it could be a BIOS issue, but if it is
>> then why does Mandriva work?
>>      
> 'Cause Sony uses a buggy ACPI table that Ubuntu can't handle? Have
> you ever tried disabling ACPI at the grub prompt? (I forget the
> option you need to add, but I'm sure you'll find it in google.)
>
> Just out of curiosity, if you are in the grub menu after a cold boot
> and drop to its command prompt (using the 'c' key in the menu, IIRC)
> and you enter "reboot", does that result in passing the BIOS POST
> screen?
>
>    --Reinhold
> PS: please snip my sig when replying!
>
>    
I'm not convinced ACPI is the problem, in my case it is not. I supplied 
the NOACPI, NOAPIC and NOLAPIC parameters to the kernel and it made no 
difference to my problem.

regards,
Steve

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