Bug 282887

Summary:	x11-base/xorg-server-1.6.3:window focus stuck
Product:	Gentoo Linux	Reporter:	Oskar Wrobel <sparrow1>
Component:	Current packages	Assignee:	Gentoo X packagers <x11>
Status:	RESOLVED CANTFIX
Severity:	normal	CC:	jlec, sparrow1
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Oskar Wrobel 2009-08-27 10:56:25 UTC

Occasionally, during intensive CPU load, I experience "lock" of window focus. I can't switch the active window using the mouse. If I do it by keyboard, new window shows up but focus stays in the old window. Also I can't use any window controls (in any window) or click on the panel.
I have experienced this in KDE 4.3.0 (and 4.2.4) and thought it was problem with kwin, but recently saw this on fluxbox, so I think it's xorg related issue.
I'm using xorg-1.6.3 with nvidia-drivers-173.14.20 and kernel 2.6.31-rc7. But I've also seen this happening with older releases.
Unfortunately I don't know how to accurately reproduce this bug. Usually this happens when I'm running emerge in console window in background while surfing the web with Opera 10. And when I Alt-tab to see progress or click on a link, I get this "focus stuck" problem.

Reproducible: Sometimes

Comment 1 Rémi Cardona (RETIRED) gentoo-dev

2009-09-01 14:01:35 UTC

The only thing you can do is to nice your CPU-hogging apps. Xorg doesn't have guards against such rogue processes.

Sorry, nothing we can do, it's in Xorg's code design.