Freezing system

[Scott Blair]

On 01/22/2015 10:17 AM, Chris wrote:
> On Thu, 2015-01-22 at 10:06 -0500, Scott Blair wrote:
>> On 01/22/2015 07:29 AM, Chris wrote:
>>> On Thu, 2015-01-22 at 01:22 -0500, Scott Blair wrote:
>>>> I am running Ubuntu 14.04. I have all the updates that have been issued.
>>>> Sometimes my system will freeze rendering the keyboard useless. However
>>>> the mouse still works. But clicking on anything doesn't work. But today when
>>>> it froze, while I was watching an imbedded video, I could click on the
>>>> status
>>>> bar and hear that it changed places, even though the status bar icon did not
>>>> move. While the video was frozen, the audio was still working. My CPU
>>>> status,
>>>> net status and clock even stops, I have the clock showing seconds to make
>>>> sure it froze up.
>>>>
>>>> I write down the times it freezes and look at the syslog file, but to my
>>>> untrained eye, I don't see anything. I have yet to find, in the syslog
>>>> file, the
>>>> time that it froze up. Am I looking in the right place? Should I be
>>>> looking at
>>>> other logs? Any idea on what to look for?
>>>>
>>>> -- 
>>>>
>>>>
>>>> Scott Blair
>>>>
>>>> Save on backup time BackupDevice=null
>>>>
>>>>
>>> Scott, this sounds exactly the same issue I've reported a bug on at
>>> Launchpad - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1402331
>>> and that has also been reported here -
>>> https://bugs.freedesktop.org/show_bug.cgi?id=75394 if you'll notice I've
>>> mentioned that everything on my machine will freeze up except the cursor
>>> can still be moved. One other oddity about this bug is that even though
>>> it appears to be 'frozen' my background operations are still going on.
>>> For instance fetchmail is still polling for mail, procmail is still
>>> processing it. Spamassassin, ClamAV and Freshclam are all still working
>>> as they should. If you'll notice in my sig that I'm running a 3.19*
>>> kernel which I was asked to do from the bug report on Launchpad. I have
>>> experienced two lockups since doing that however neither one have shown
>>> the 'hangcheck....' error in my syslog. I'll be attempting to do as
>>> asked which is to 'bisect' a kernel. 
>>>
>>> HTH
>>>
>>> Chris
>>>
>>>
>> This is my output:
>> Scott at Main:~$ uname -a
>> Linux Main 3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:22:43 UTC 2014
>> x86_64 x86_64 x86_64 GNU/Linux
>> Scott at Main:~$
>>  So upgrading the kernel has no effect. Because your background
>>  operations are still running, could it be a unity thing and not a
>> system thing.
>>
>> -- 
>>
>>
>> Scott Blair
>>
>> Save on backup time BackupDevice=null
>>
>>
> Don't think so Scott, I'm still learning Ubuntu however I'm running the
> Gnome desktop. If you look at the bug report at the freedesktop.org link
> I sent you can see that it affects not only Ubuntu or a particular
> computer mfgr, ie..I run a Dell Optiplex 780. 
>
Yeah I saw that. Wishful thinking. I just upgraded to the 3.16.0 kernel.
We will see how it goes.
Any idea on what logs I should be looking at when this happens?

-- 


Scott Blair

Save on backup time BackupDevice=null