Dead kernel when running any R code, PNG and X11 related #388
Description
Hi,
I'm not sure this is a bug but maybe just some clarification or a workaround required.
Seems related to Issue #386
When attempting to execute any R code (not even graphics related, just something like "a <- 1" will do it), the kernel dies.
Error output:
Error in .External2(C_X11, paste("png::", filename, sep = ""), g$width, :
unable to start device PNG
Calls: <Anonymous> ... evaluate -> dev.new -> do.call -> <Anonymous> -> ok_device
In addition: Warning message:
In ok_device(filename, ...) : unable to open connection to X11 display ''
Execution halted
My R capabilities:
jpeg png tiff tcltk X11 aqua
TRUE TRUE FALSE FALSE FALSE FALSE
http/ftp sockets libxml fifo cledit iconv
TRUE TRUE TRUE TRUE TRUE TRUE
NLS profmem cairo ICU long.double libcurl
TRUE FALSE TRUE FALSE TRUE FALSE
I'm running on a headless Centos 6.7 server. R was configured with X11 support but capabilities() says it's FALSE because a graphics device is not found.
However I have both PNG and Cairo support enabled, I'm wondering if "Cairo" is supposed to be preferenced over PNG?
I installed IRkernel from Github yesterday July 31st.
> sessionInfo()
R version 3.2.2 (2015-08-14)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: CentOS release 6.7 (Final)
locale:
[1] LC_CTYPE=en_AU.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_AU.UTF-8 LC_COLLATE=en_AU.UTF-8
[5] LC_MONETARY=en_AU.UTF-8 LC_MESSAGES=en_AU.UTF-8
[7] LC_PAPER=en_AU.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_AU.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] IRkernel_0.6
loaded via a namespace (and not attached):
[1] R6_2.1.2 magrittr_1.5 IRdisplay_0.4.3 pbdZMQ_0.2-3
[5] tools_3.2.2 uuid_0.1-2 stringi_1.0-1 jsonlite_1.0
If this isn't a bug, my intention is to run an "xvfb" server to enable an X11 graphics device and see if that resolves the issue but I'd rather try to make it work without resorting to that.
Any help/info appreciated.