[plug] blank screen issue

[gavinwc]

Hi Ono,

A very good trouble-shooting shortlist, thanks :-)

I'll look into implementing those one at a time as I can. I say that
knowing that some of those steps can be put in place simultaneously for
diagnostic reasons while I try other strategies on the list, but also wary
of doing too many trouble-shoots at once so as not to confuse getting valid
evidence of the problem :-)

Kind regards,
Gavin

On Fri, 1 Mar 2024 at 14:12, 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
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>
>
>
> --
> Onno Benschop
>
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>
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> _______________________________________________
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