Norman, So I'm not yet able to pin-point the problem. Once I cured the symptom > by killing the two '/usr/bin/VBoxClient --clipboard' processes and > starting one instance manually. But that is of course just a hack. The > trouble supposedly started after I updated my Xubuntu guest OS. > > typing VBoxClient --clipboard seemed to fix it, although it's not clear how because it didn't kill the old processes. But, that's a huge help, because at least I can copy/paste within the VM. Previous workaround was using the center-click in X in the VM, which does not seem to get copied to Sculpt (although center-click in Sculpt seems to paste the regular clipboard - probably Sculpt only has one clipboard unlike X).
> If you have further observations or even a way to reliably trigger the > problem, I'd very much appreciate it. > I'll check on this next time I reboot, but I've never "not had" this problem until now as far as I can remember, so probably my Debian install triggers it pretty reliably. I'll confirm that when I restart, because for now it's solved. Two quick observations - copying more than 814 lines of sequential 3-digit decimal (i.e. 4 bytes a line in UTF-8) gives "Error: could not write clipboard data." from vbox, but seems to work within the VM (now). It should be noted that within qt5_textedit the limit appears to be 1018 lines, and within the Sculpt "Files" editor itself much larger copies are possible (it's difficult to tell because that editor is not user-friendly when it comes to large files). The VM limit is ballpark for what I observed before in terms of in-VM copy failures, but I'll have to double-check when the issue resurfaces. Second observation, sometimes, for unknown reason, there will be a group of "Error: invalid clipboard xml syntax" messages from vbox. It seems to happen when the Sculpt editor is used. > BTW, if you set the 'verbose="yes"' attribute in the clipboard > configuration in Sculpt's config fs, you can observe all copy operation > that arrive at the global clipboard in the log. > Helpful, I have turned this on, thanks.
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