<div dir="ltr"><div>Hi Ono,</div><div><br></div><div>A very good trouble-shooting shortlist, thanks :-)</div><div><br></div><div>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 :-)</div><div><br></div><div>Kind regards,</div><div>Gavin <br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 1 Mar 2024 at 14:12, Onno Benschop <<a href="mailto:onno@itmaze.com.au">onno@itmaze.com.au</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Couple of things come to mind, none of them a smoking gun:<div><ul><li>If the computer is connected via HDMI and the cable is bad, all manner of fun things can happen.</li><li>Is power saving turned on somewhere and is it activating when the user does nothing?</li><li>Is the device being overloaded and is the machine freezing to protect itself from magic smoke escaping.</li><li>If the machine is unresponsive, is it unreachable through the network - ie. can you ssh into it?</li><li>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.</li><li>You can also log CPU/GPU temperatures to a file and see what happens.</li><li>Is the user changing video mode, or is a screensaver doing this for them?</li></ul></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 1 Mar 2024 at 12:09, gavinwc <<a href="mailto:gavin.chester@gmail.com" target="_blank">gavin.chester@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi folks,<div><br></div><div>Not sitting at the offending PC at the moment, so can't give any specifics on SW versions, etc at this time, sorry. </div><div><br></div><div>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?</div><div><br></div><div>Thanks.</div><div><br></div><div>Gavin </div></div>
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