emerald crashed with SIGSEGV in gdk_gc_new_with_values()

StacktraceTop:?? ()
IA__gdk_gc_new_with_values (drawable=0x8346d60, values=0x0, values_mask=0) at /build/buildd/gtk+2.0-2.11.6/gdk/gdkgc.c:118
IA__gdk_gc_new (drawable=0x8331a08) at /build/buildd/gtk+2.0-2.11.6/gdk/gdkgc.c:96
update_switcher_window (win=0x831daa0, selected=<value optimized out>) at main.c:3225
event_filter_func (gdkxevent=0xbfd3e538, event=0x839d330, data=0x0) at main.c:4496

This bug is still available in current hardy.

 This bug has been reported to the developers of the software. You can track it and make comments here: http://bugs.opencompositing.org/show_bug.cgi?id=502

I marked this bug as high importance, as it has a severe impact on a small portion of Ubuntu users: quickly switching between windows breaks emerald very reliably.

I can confirm that (emerald crashing on window switching) on up-to-date hardy amd64.

Should be fixed since 0.7.2

Well, it's not.

how do you mean?

Jay wrote:
> Well, it's not.
>
>

It's not fixed.

$ emerald --version
emerald: emerald version 0.7.2

$ dpkg -l emerald
ii emerald 0.7.2-0ubuntu1

It's just crashed during window switching.
If you change foreground window witch Alt-Tab and press Alt-Tab before the switcher wintows disappear, emerald ocassionally crases.
I'm writing this bugreport without window decorations because Emerald just crashed during Alt-Tab and apport brought me here.

I just pressed Alt-Tab a few times to check whether I could still produce the error. Not surprisingly Emerald crashed! For some reason I can't Alt-F2 to enter 'emerald --replace' and so I have to use Compiz Switch to restart emerald and fusion. Definitely not fixed.

It's Emerald that handles the Alt-F2 shortcut, so it does not work when there is no Emeral running.
I overcome this: open terminal, run emerald, press Alt-F2, switch to terminal and kill Emerald by pressing Ctrl-C, switch back to run dialog and run 'emerald --replace' :)

I agree that it has not been fixed. It only took 3 or 4 ALT-TAB in a row to cause it to crash. I keep a run shortcut on my main panel for when this happens because Alt-F2 does not work without emerald.

It still crashes while switching between windows very fast, but it is not relevant to this bug : Trying to install themes using the emerald theme manager program. The download indicator just hangs, and when I tried to close it, it crashed all of X. This only happens occasionally. Or am I missing a point?

Setting back to triaged, I reported the problem upstream.

I just encountered this issue with the latest Hardy Alpha 6. Using compiz effects with a customized emerald theme. I was using Alt-Tab switcher when I got the crash report and all of the title-bars went missing from my windows. Using 64-bit Ubuntu with Nvidia non-free video driver.

Well, it seams that a unref'd pixmap, so invalid, comes in use. This patch
 http://bugs.opencompositing.org/attachment.cgi?id=410
should be applied.

Hello,

should be fixed in git, otherwise re-open that bug

Roland "Test-tools" Bär

I was switching between windows when this happened

Uploaded, thanks for your contribution!

This bug was fixed in the package emerald - 0.7.2-0ubuntu2

---------------
emerald (0.7.2-0ubuntu2) hardy; urgency=low

  * debian/patches/01_upstream_pixmap-crashes-window-switcher.patch: patch
    from upstream to workaround unrefd pixmap and extend pixmap sanity checks
    to honor ref_count (LP: #139877)

 -- Kjell Braden <email address hidden> Sat, 15 Mar 2008 12:06:21 +0100