unresponsive screen graphics

[rikona]

Hello rikona,

Saturday, January 28, 2017, 12:20:41 AM, rikona wrote:

> Hello Ralf,

> Friday, January 27, 2017, 9:36:15 PM, Ralf wrote:

>> On Fri, 27 Jan 2017 21:20:32 -0800, rikona wrote:
>>>> Have you power cycled the system?  
>>>
>>>I did not turn off the power completely - I assumed that would not
>>>make a difference.

>> In regards to Ubuntu software issues rebooting with or without shutdown
>> should be enough, in regards to hardware issues it isn't.

>> Most likely it doesn't make a difference regarding the issue you
>> experience, but you never know, it doesn't harm to disconnect from power
>> for a while. Usually (but not necessarily) the power switch of the power
>> supply does disconnect, but even a shutdown doesn't. Capacitors could
>> keep charge for minutes, but for computers it usually is enough to wait
>> a few seconds, before connecting with power again, to get rid of power
>> related hardware issues.

>> Could you post a screenshot?

> Wild, wild, wild.... I was setting up to get a screenshot and very
> rapidly did a whole bunch of large copies from Nemo to other Nemo
> windows. I got the often small window 'preparing to copy" which can
> take a few minutes to clear, then all five of the Nemo windows went
> gray and stopped responding. I waited a long time and they didn't
> recover so I decided to just stop them in htop. I think I was stopping
> the third window when they all disappeared [maybe that was the hung
> window?].

> BUT - when I went to start them again I noticed that the long standing
> problem graphics I have been talking about were GONE!!! So, maybe
> there was something about Nemo that was causing it? I had never
> stopped a hung Nemo via a CLI or htop before - that was new. Anyway,
> by accident, I seemed to have solved something that has survived
> multiple reboots, and I have no clue why it went away. I don't want to
> reboot just yet but I hope it does not again reappear when I do
> reboot. I'd like to consider this closed, but if it does come back
> I'll mention it again.

Well, it did come back after a large update requiring a reboot! I have
done reboots BEFORE the update and it did NOT come back, so something
about this update changed things. This update included kernel stuff -
don't know if that is significant. Other smaller non-kernel updates
did NOT bring the problems back.

But, since stopping Nemo via the CLI worked before, I did that again
and it worked - again. Multiple problems gone. Stopping Nemo by just
closing it does NOT work, but via CLI does. What is the difference
between stopping in those two ways? Any idea what is changed by this
action?

I again tried searching for something that would put inactive
icon-like graphics on the desktop screen after a reboot, but found
nothing. How are these getting there in the first place when they do
show up?

All info much appreciated, but I do have a rather strange workaround,
so not crucial. :-)

-- 

 rikona