Kubuntu Hangs intermittently. Video goes crazy from time to time.

[Juan Marcelo Rodríguez]

On Fri, Oct 9, 2009 at 3:56 AM, Michael Krueger
<mickrulist at voipfuture.com> wrote:
> For me the same. After the latest update to KDE 4.3.2 on jaunty it seems that
> e.g. dolphin is extremly effected, by intermitted hang's. This is really annoying...
> It feels like an incredible slowdown. The systemtray also had problems again
> this morning rendering all the icons. Only after clicking into the tray they
> showed all up.

I'm running now 2.6.31-02063101-generic, and it runs better. The two
outputs that I saw as a clue were :

CPUFREQ: Per core ondemand sysfs interface is deprecated - up_threshold

Also : hpet increasing min_delta_ns

I read over some bug lists and bug trackers that the problem is with
different hardware, and somehow common with Dell hardware.

While there's no official solution, I found that by adding
hpet=disable to grub, it works better, and I'm not getting the advice
in dmesg nor the blinky awful screen.

To solve this, edit /etc/default/grub and modify the following line :

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash hpet=disable"

The hpet=disable parameter apparently solves this issue. I read over
there, that some guys solved this that way, without blinks or hangs
for over two weeks.

Best.

Juan


>
>
> Ric Moore schrieb:
>> On Thu, 2009-10-08 at 15:53 -0300, Juan Marcelo Rodríguez wrote:
>>> Hi guys,
>>> Kubuntu hangs intermittently. This is awful and very uncomfortable.
>>>
>>> Hardware: Dell Vostro 1520 - Intel dual core 2.20 Ghz - 4 Gb. RAM -
>>> Video Intel - Broadcom WiFi.
>>>
>>> Karmic Koala - latest version installed from daily cd version of
>>> Karmic Koala and then updated to the latest packages.
>>>
>>> The kernel gave the : hpet increasing min_delta_ns from time to time.
>>> Then, by time to time I don't receive anything, but I got the video
>>> going crazy, hanging the system.
>>>
>>> Also I got, as a warning or error or advice, from dmesg the following :
>>>
>>> CPUFREQ: Per core ondemand sysfs interface is deprecated - up_threshold
>>>
>>> This is awful, absolutely awful. And makes impossible to use the
>>> system. I tried the following kernels : 2.6.32-020632rc1-generic,
>>> 2.6.31,
>>> 2.6.31-10-generic and 2.6.30-02063006-generic.
>>>
>>> Any ideas ?. I read that the problem is with hpet. However I have hpet
>>> disabled in Grub2.
>> I'm running Karmic but grub2 hasn't been installed. Still running grub.
>> SHOULD I be using grub2?? Ric
>>
>>
>>
>>
>>
>
>
>
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