Sorry I found my old post.
https://sourceforge.net/p/gnuplot/mailman/gnuplot-beta/thread/211253.49218.qm%40web103117.mail.kks.yahoo.co.jp/
Tatsuro
> ----- Original Message -----
>
> From: "Tatsuro MATSUOKA" <tma...@ya...>
> To: "beta" <gnu...@li...>
> Date: 2021/12/19 日 14:14
> Subject: spurious messages at first plot on qt terminal on Cygwin
>
>
> As far as I remenber, I made the similar question on the phenomena.
>
> After workaround by by Enrico Forestieri
> https://sourceforge.net/p/gnuplot/mailman/gnuplot-beta/thread/160...@we.../
> I could use qt termninal on Cygwin again.
>
> At first plot in the interactive mode, spurious messages appear.
>
> Terminal type is now 'qt'
> gnuplot> plot x
> QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-user'
> libGL error: Windows-DRI extension not available
> libGL error: No matching fbConfigs or visuals found
> libGL error: failed to load driver: swrast
> gnuplot> QXcbShmImage: shmget() failed (88: Function not implemented) for size 1394424 (642x543)
>
> From the second plot the above messages do not appear.
>
> It will be grateful for me is someone will give me suggestions and comments.
>
> Tatsuro
>
>
>
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