Experiencing full lockups, loss of focus

[cdlm]

Spacemacs often locks up to the point where C-g does nothing, the main frame does not redraw, and the process uses a full CPU. (Spacemacs master + daily updated packages, on emacs-24.5-z-mac-5.10 installed via Homebrew)

I've seen it happen when calling org-capture from the home buffer on a freshly launched Spacemacs, when trying to recover a file (M-x recover-this-file or M-x recover-file), or with minibuffer completions (via Helm, I suppose).

Another symptom is that Helm somehow loses focus (because I clicked somewhere else, or closed the window where it was showing completions, or just because) and there is no way to regain focus or invoke commands. Helm still seems active, but at the same time is not accessible anymore.

I'm not sure Helm is the real culprit here, and not even that all symptoms are of a single problem. I will try to note what I did next time it manifests, but it's partly random…

[Kethku]

Dunno about the freezing thing, but the helm issue can be fixed by pressing SPC w b to get back to the minibuffer and get helm working again. For the related issue: #2851

[cdlm]

Is semantic-mode on when updating packages or loading them at boot time?
Last lockup, I tried to keep C-g pressed for a long time (10-20 sec); after a while the frame redraws, and there was an error message in the minibuffer about semantic not having support to parse org-loaddefs.el. I tried quitting Emacs, but semantic would trigger again for 10-20 seconds, making it unresponsive. Disabling semantic-mode stopped the unresponsiveness.

I've disabled semantic in my .spacemacs file. We'll see if this fixes the problem…

[sooheon]

Hm, I think I may have come across a similar issue, where typing some prefix (like ev-il) echoes in the mini buffer a whole bunch of source files being parsed, which I'd have to c-g out of. But I don't have semantic installed, just company-mode.

[valrus]

Just had this happen while trying to do a routine buffer switch with SPC b b. Screenshot shows the state of Helm at the time Emacs became unresponsive; I assume the blank modeline is unrelated but I included it for posterity. No amount of C-g has any effect, and resizing the frame causes it to become permanently blank. This is on Windows 7.

I have also had Emacs go completely unresponsive a couple times in the last couple days immediately after starting Emacs upon trying to switch to a layout using the spacemacs-layouts command SPC l, which I don't believe involves Helm.

[braham-snyder]

regarding semantic freezing and constant source file parsing messages, what I posted here might fix it: #7736 (comment)

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