I am trying to something that is not too common, but I have Windows Subsystem for Linux 2 (WSL2) setup with Windows X Server (VcXsrv) to open RStudio Desktop (NOT RStudio Server, because WSL2 doesn't support local host port forwarding). I have Ubuntu 18.04 installed on Windows 10 Build 1954+.
All other GUI apps, like Chrome, IntelliJ etc. work properly using VcXsrv. My Ubuntu is running xcfce (installed via a sudo apt install xcfe4 and startxcfe4 command on terminal). I installed RStudio using 1.2.5033-amd64.deb from RStudio website and installed it using apt-get.
Now when I run rstudio via terminal, RStudio opens up but with black screen (I can see RStudio header only) with the following error on terminal
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-BETWEENTWOTESTS'
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
Could not link shader program:
""
[23529:23862:0114/151251.459445:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.480172:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.508391:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.525751:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.541635:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.554133:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.567590:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.578671:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.590344:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
[23529:23862:0114/151251.603896:ERROR:context_group.cc(274)] ContextResult::kFatalFailure: too few texture units supported (0, should be 8).
As per this SO thread with similar problem, I tried sudo rstudio. I can now see RStudio as it should look like with the following messages on terminal
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Home directory not accessible: Permission denied
This issue actually doesn't seem like RStudio-specific. It looks like it is a graphics set up issue with by WSL-GUI-foo setup.
It would be great if I can find out a way to not sudo every time, but this is an acceptable solution for me at this time (especially because WSL2 is still in beta mode). I am leaving a note here in case others try to Google with keywords WSL and X Server. It would be useful if someone can point out potential downside of me using sudo rstudio every time though. Again, not high priority.
Thanks all!