<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_extra"><br><div class="gmail_quote">On 29 March 2016 at 18:05, brian <span dir="ltr"><<a href="mailto:brian@meadows.pair.com" target="_blank">brian@meadows.pair.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br>
</span>I did try leaving the PC for an extended time (around 30 minutes) but<br>
it was still non-responsive. There's no way for me to navigate<br>
anywhere when it happens, neither keyboard nor mouse produce any<br>
effect.<br></blockquote><div><br></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline">You cannot really debug such problems from the system itself, best to to ssh to the machine from another box and try to see if a process is hogging on the CPU for example.</div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline"><br></div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline">It could also be that one X11 app is having an active grab on the pointer and keyboard, thus preventing any other user interaction (that appears like a lockup except that the screen still refreshes, the mouse pointer still moves, etc.)</div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline"><br></div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline">Also, xfce 4.10 is a bit old (even more considering the pace of xfce releases...) - But it's next to impossible to root cause such issues remotely, you need to first investigate on your side.</div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline"><br></div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline">Cheers,</div></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small;display:inline">Olivier</div></div></div></div></div>