SIGWINCH causes brief hang
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
compiz (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: compiz
This is definitely something that appears in 9.04 and not 8.10. I ran into this problem before when I installed some 9.04 packages onto my 8.10 system, and reverting those packages back to the versions from 8.10 helped. Unfortunately I can't remember exactly what the packages were, but they were whatever is required to be upgrade to run the newest digikam version.
So I previous had the problem and solved it, but then today decided to do a complete upgrade to 9.04 and the problem has returned.
Using compiz with the resize plugin: When you release the mouse button when resizing a window, the system briefly freezes for about 2 seconds. My videocard is a Mobility Radeon HD 3400 Series using the ati-provided flgrx drivers. This bug does not seem to be related to that driver version. The machine is a dell studio 1537, running x86_64.
I remember thinking that this was caused by some kde libraries, so I'll try uninstalling a bunch of stuff to see if it resolves to narrow down the problem.
Update:
I am pretty certain now this is not actually a compiz problem. The behavior shows up with whatever the fallback window-manager is. Running ltrace on gtk-window- decorator once I fell out of a crashed compiz I discovered that the 2 second pause is occuring with SIGWINCH. Indeed, testing other things that cause that signal, such as creating a window, restoring a window, etc, causes the brief pause. So I'd change the package this bug is filed for, but I'm not sure which package is actually broken.