Windows 10 – Use Accelerated Graphics on Linux Subsystem with Xming

(Edit: Oct 2020) For 2-way clipboard on neovim, I have been using win32yank for several months with no issues. Put win32yank.exe somewhere in your path on Linux (anywhere should be fine), and add the following to your init.vim.

set clipboard+=unnamedplus
let g:clipboard = {
          \   'name': 'win32yank-wsl',
          \   'copy': {
          \      '+': 'win32yank.exe -i --crlf',
          \      '*': 'win32yank.exe -i --crlf',
          \    },
          \   'paste': {
          \      '+': 'win32yank.exe -o --lf',
          \      '*': 'win32yank.exe -o --lf',
          \   },
          \   'cache_enabled': 0,
          \ }

(Original answer) If you just want to yank from VIM to Windows, for WSL2 and Ubuntu 20.04, this answer on Reddit worked perfectly for me with standard VIM and standard WSL2 Ubuntu.

Put the following in your .vimrc (at the bottom, for example):

" WSL yank support
let s:clip = '/mnt/c/Windows/System32/clip.exe'  " change this path according to your mount point
if executable(s:clip)
    augroup WSLYank
        autocmd!
        autocmd TextYankPost * if v:event.operator ==# 'y' | call system(s:clip, @0) | endif
    augroup END
endif

While I hate to be "that guy" who posts an answer to his own question, I went through more than a little pain to get things working, and I'd like to save the next guy the same amount of trouble. So, here is

What actually ended up working

For reasons I do not understand, my system worked when I ran contrary to the (quite sensible) recommendation from @allquixotic.

1) Disable LIBGL_ALWAYS_INDIRECT

This wound up being really difficult, simply because I had to find where it was set.

• In the folder \etc\profile.d was a file wsl-integration.sh.
• The above file was actually a symlink; the actual file was /usr/share/wslu/wsl-integration.sh
• In that file the variable LIBGL_ALWAYS_INDIRECT was set, so I commented out that line.

2) Do not use the -wgl command line argument (or its GUI equivalent) for VcXsrv

Since I was launching VcXsrv from a GUI client, this meant leaving the second option box, titles "Native opengl", unchecked.

Only once I had both those changes made (and did a fresh reboot to make sure no old settings for VcXsrv had persisted) then the gears in glxgears were turning at a normal rate, and I could reorient them using the arrow keys, just like they're supposed to work.