Re: [xmonad] Bug in program depends on number of tiled windows

On Sun, Mar 11, 2012 at 8:01 PM, Brandon Allbery wrote:

On Sun, Mar 11, 2012 at 17:54, Wirt Wolff wrote:

...

With two, three, or four, all but the newest are blank until resized, so far as I can tell with just a few tests.

Mod-n to refresh and focus changes do nothing, but any xmonad operation that resizes triggers redrawing.

Another weird symptom is that with 3 plots, the third plotted and the first two blank...  changing to an empty workspace and then back to the plot workspace draws two of the plots but not consistently. Sometimes 1 and 3 get drawn, and other times 2 and 3. :/

Toggling plots to and from full-screen also give unpredictable behavior.

Somehow I'm thinking R is waiting until some negotiation is complete, that xmonad thinks is already complete.  I'm curious as to whether it relies on libX11/xcb/whatever toolkit it's using handling ConfigureRequest or tries to do so itself; that's the most obvious difference between the various cases *and* where xmonad is likely to differ from other window managers.

I'd be curious as to whether any problems have been reported with R in other nonreparenting or tiling window managers.  (Note, the two are not the same thing.)

-- brandon s allbery                                      allbery.b@gmail.com wandering unix systems administrator (available)     (412) 475-9364 vm/sms

I looked at the documentation for x11() in R, and the default is to use type="X11". If I install the Cairo library 1.5_1 for R and launch two CairoX11 plots, I get a segfault whenever I resize. I will probably file this as a bug report with the R developers. The segfault should be much easier to track down that drawing bugs. gdb output (using R -d gdb):

library('Cairo'); CairoX11() ; CairoX11()

Program received signal SIGSEGV, Segmentation fault. 0x009f6704 in Rcairo_backend_resize (be=0xceb0, width=570, height=296) at cairotalk.c:1025 1025 if (!be || !be->dd) return; I do not know if this has been reproduced with other tiling window managers. John