Karmic upgrade has broken the system clock

[Rashkae]

drew einhorn wrote:
> On Sun, Nov 15, 2009 at 1:54 PM, Rashkae <ubuntu at tigershaunt.com> wrote:
> 
>> drew einhorn wrote:
>>>
>>> ntp can't fix a clock that is off by more than 7.25 seconds every 10
>> minutes.
>> what is the output of:
>>
>>
>>  sudo cat /sys/devices/system/clocksource/clocksource0/current_clocksource
>>
>>
> tsc
> 
> 
>> and:
>>
>> sudo cat /sys/devices/system/clocksource/clocksource0/available_clocksource
>>
>>
> tsc acpi_pm

> I'm betting your current clocksource is tsc, which the kernel seems to
>> favor as default on some systems, but just doesn't keep track of time
>> all that well.
>>
> 
> Bingo!
> 
> Now that we know what's wrong.  How do we fix it?
> 
> 

Append clocksource=acpi_pm to your kernel options.  If you have Grub 2,
you would edit one of the default files in /etc/grub, then run
grub-update.  However, since you indicated an upgrade, you might still
have Grub-legacy, (wherin you edit the /boot/grub/menu.lst file)

I would also encourage people with this issue to file a bug in
Launchpad.  I was hit by this with my gutsy system, but now you're the
second person I've noticed on the list to be affected by this with Karmic.