[Bradford] Dead icons in Lyx toolbar

[Devo Too]

Not sure if this is helpful but it's certainly related: Just tried 
exporting via File -> Export, which produces a dropdown offering various 
formats including PDF (pdflatex), PDF (LuaTeX) and PDF (XeTeX).

Each time the error message comes up: /path/to/file.pdf is not a 
readable LyX document.

Also, now read the Xfce closing down error in full, suggesting it's 
input-output error 11, viz:

Waiting for X server to shut down xfsettingsd: Fatal I0 error 11 
(Resource temporarily unavailable) on X server :0.0.Gdk-Message: 
15:29:02:352: xfdesktop: Fatal IO error 11 (Resource temporarily 
unavailable) on X server :0.0(11) Server terminated successfully (0). 
Closing log file.

Mike

On 14/04/2019 14:58, Devo Too via Bradford wrote:
> Hi Folks,
> 
> After a fascinating introduction to Lyx/Latex/Tex by John at Tuesday's 
> BradLUG, I installed Lyx on the PC and, having finally got the laptop 
> into a functioning state at the same meeting thanks to David, Lyx on the 
> laptop too.
> 
> Initial results using the PC were terrific and easy to achieve. But 
> copying the draft report to the laptop, the first four toolbar icons* 
> are dead.
> 
> Tried going into the dropdown menus to get a view of the PDF outputs, 
> which didn't work either.
> 
> *The icons are "View" (pdf output - image of two eyeballs), "Update" 
> (image of two arrows forming a circle, like an old fashioned browser 
> "refresh" button), "View master document" (two eyeballs on a file cover) 
> and "Update master document" (old refresh arrows on a file cover). The 
> third and fourth are also inactive on the PC, not used anyway so not so 
> bothered.
> 
> The first one, though, is used constantly.
> 
> I've searched on various terms to find answers, checked permissions, 
> double checked to ensure I installed at least the same programmes onto 
> the laptop as on the PC (although Latex was already installed when I 
> started putting Lyx on the PC), dug around in a few file systems hinted 
> at here and there as I've been reading. These were mainly Xorg and 
> Nvidia, one of which I still suspect may hold the solution.
> 
> Is this a hint? Sometimes when closing Xfce the ystem comes up with a 
> line containing "Waiting for X server to shut down: fatal 10 error (or 
> error10?): resource temporarily unavailable - which goes on but runs off 
> the screen so I can't see the last part.
> 
> Both boxes have Arch installed. The PC has Gnome and the laptop has Xfce 
> as its GUI.
> 
> So can anybody please point me in a direction which may prove fruitful 
> in solving this problem?
> 
> TIA,
> 
> Mike
>