[plug] blank screen issue

[Onno Benschop]

As I've said before, you need to log the temperature. A runaway fan might
happen AFTER the box freezes, not while. The two may, or may not, be
related.

On Tue, 12 Mar 2024 at 16:32, gavinwc <gavin.chester at gmail.com> wrote:

> Thanks for your ideas, Locky. And again, the previous responders.
>
> I haven't had a chance to do the fault-finding and logging that has been
> suggested, but I am now suspectng that what it might reveal is thermal
> "runaway" with the cpu. As said originally, this is a little intel nuc box
> (on the back of the monitor), and into that I've crammed a 12th gen i7 with
> 64Gb ram and 2Tb ssd. As it so happens just before reading the latest
> response the system went into unresponsive mode with blank screen again.
> Only a hard reset gets it back again.
>
> Immediately before this episode the tiny nuc box's fan was going flat out
> because I'd spent a wasted few hours going down rabbit holes on youtube
> videos, one after the other. The nuc external casing was almost too hot to
> touch. Me thinks now that it was thermal shutdown and I will have to
> investigate extra cooling for this box.
>
> Occam's razor, do you think?
>
> Thanks,
> Gavin
>
> On Tue, 12 Mar 2024 at 12:47, lhuck <lhuck at proton.me> wrote:
>
>> My 'two cents' would be to check what GPU driver is being used, then try
>> a different one and see if the problem repeats.
>>
>> Best of luck,
>> Locky
>>
>> On Friday, March 1st, 2024 at 2:11 PM, Onno Benschop <onno at itmaze.com.au>
>> wrote:
>>
>> Couple of things come to mind, none of them a smoking gun:
>>
>>    - If the computer is connected via HDMI and the cable is bad, all
>>    manner of fun things can happen.
>>    - Is power saving turned on somewhere and is it activating when the
>>    user does nothing?
>>    - Is the device being overloaded and is the machine freezing to
>>    protect itself from magic smoke escaping.
>>    - If the machine is unresponsive, is it unreachable through the
>>    network - ie. can you ssh into it?
>>    - dmesg -T will give you a human readable time stamped kernel log if
>>    you can get it. You might want to log it to disk using cron every minute
>>    while you're trying to discover what's wrong.
>>    - You can also log CPU/GPU temperatures to a file and see what
>>    happens.
>>    - Is the user changing video mode, or is a screensaver doing this for
>>    them?
>>
>>
>> On Fri, 1 Mar 2024 at 12:09, gavinwc <gavin.chester at gmail.com> wrote:
>>
>>> Hi folks,
>>>
>>> Not sitting at the offending PC at the moment, so can't give any
>>> specifics on SW versions, etc at this time, sorry.
>>>
>>> Running up-to-date Mint on some heavy i7 NUC HW with a Dell 27" monitor.
>>> Every now and then, usually when trying to launch some full-screen video,
>>> the monitor blanks to just the backlight glow, the NUC fan speeds up and
>>> the keyboard is unresponsive. Because of the last factor, no amount of
>>> cntrl+BS, ctrl+alt+del, or trying to open a VT works. I have to do a hard
>>> reset. Any ideas of any other HW / keyboard options I can try, or even
>>> better, if there is a setting I need to look at to prevent this happening?
>>>
>>> Thanks.
>>>
>>> Gavin
>>> _______________________________________________
>>> PLUG discussion list: plug at plug.org.au
>>> http://lists.plug.org.au/mailman/listinfo/plug
>>> Committee e-mail: committee at plug.org.au
>>> PLUG Membership: http://www.plug.org.au/membership
>>
>>
>>
>> --
>> Onno Benschop
>>
>> ()/)/)() ..ASCII for Onno..
>> |>>? ..EBCDIC for Onno..
>> --- -. -. --- ..Morse for Onno..
>>
>> If you need to know: "What computer should I buy?" http://goo.gl/spsb66
>>
>> ITmaze - ABN: 56 178 057 063 - ph: 04 1219 8888 - onno at itmaze.com.au
>>
>>
>> _______________________________________________
>> PLUG discussion list: plug at plug.org.au
>> http://lists.plug.org.au/mailman/listinfo/plug
>> Committee e-mail: committee at plug.org.au
>> PLUG Membership: http://www.plug.org.au/membership
>
> _______________________________________________
> PLUG discussion list: plug at plug.org.au
> http://lists.plug.org.au/mailman/listinfo/plug
> Committee e-mail: committee at plug.org.au
> PLUG Membership: http://www.plug.org.au/membership



-- 
Onno Benschop

()/)/)()        ..ASCII for Onno..
|>>?            ..EBCDIC for Onno..
--- -. -. ---   ..Morse for Onno..

If you need to know: "What computer should I buy?" http://goo.gl/spsb66

ITmaze   -   ABN: 56 178 057 063   -  ph: 04 1219 8888   -
onno at itmaze.com.au
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