I wrote:
Another thing I ran into is that when keeping an X11-aware build of Emacs open within my XQuartz sessions, I find it disappears from the screen after allowing my laptop to sleep and wake from sleep.
After some further experimentation, I've realized that what is happening is that the window is being redisplayed completely off-screen. In general, it seems like sleep and then wake results in all my existing windows being repositioned -- although only the first time; that is, once repositioned in a sleep/wake cycle, a window is not further affected by additional sleep/wake cycles. The extent of repositioning seems to vary depending on how the window was positioned internally. The worst case I'm seeing, with the emacs window getting repositioned totally off screen, happens with a window whose initial geometry spec is "-0+0", ie pin to the upper right corner. I don't have an explanation for why this happens with local X11 clients and not remote ones with similar geometry specs. Known problem? Should I file a ticket? regards, tom lane