Comment 35 for bug 419501

Hey,

    Sorry I haven't had any free time to work on this and it doesn't look
like I'm going to have any time until spring break. That's only a week and
a half away and I should be able to spend a lot of time on this then. I'm
not sure if I'll be back in Arlington or not, but I should have plenty of
time to do my best to fix this by March 15th, when Luke said we needed to
have something done. I hope this is acceptable, I just don't have any time
between school and pledging.

Jamie

On Tue, Feb 23, 2010 at 9:05 AM, Michael Babcock <email address hidden> wrote:

> Simple test case for many xcb-based libX11 bugs:
>
> ico -threads 10
>
> You will likely get a deadlock, "_XAllocID: Assertion `ret != inval_id'
> failed." or the error mentioned here.
>
> Locally we have problems with any X program that uses multi-threading
> since the switch to libxcb X11. Sometimes one or two bugs will be fixed
> but then others will turn up. We have resorted to maintaining our own
> compile of pre-xcb libX11 in order to make our in-house programs
> reliable.
>
> At this point I think libxcb libX11 is a failed experiment. If the
> threading bugs haven't been fixed after a couple years now, will they
> ever be? Should we simply revert to the old libX11? Last time this was
> suggested the answer was that compiz depended on xcb, but is some
> desktop eye-candy really more important than real applications working
> that people use to get real work done?
>
> Someone found the root cause of another of these bugs recently, so maybe
> there is hope:
> http://lists.freedesktop.org/archives/xcb/2009-October/005102.html
>
> --
> apport-kde assert failure: python: ../../src/xcb_io.c:242:
> process_responses: Assertion `(((long) (dpy->last_request_read) - (long)
> (dpy->request)) <= 0)' failed.
> https://bugs.launchpad.net/bugs/419501
> You received this bug notification because you are subscribed to GASP
> Core.
>
> Status in GASP Core Code: Confirmed
> Status in “libxcb” package in Ubuntu: Confirmed
> Status in “libxcb” source package in Lucid: Confirmed
>
> Bug description:
> Binary package hint: apport
>
> Description: Ubuntu karmic (development branch)
> Release: 9.10
>
> ProblemType: Crash
> Architecture: amd64
> AssertionMessage: python: ../../src/xcb_io.c:242: process_responses:
> Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)'
> failed.
> CrashCounter: 1
> Date: Wed Aug 26 16:14:40 2009
> DistroRelease: Ubuntu 9.10
> ExecutablePath: /usr/share/apport/apport-kde
> InterpreterPath: /usr/bin/python2.6
> NonfreeKernelModules: nvidia
> Package: apport-kde 1.8-0ubuntu1
> PackageArchitecture: all
> ProcCmdline: /usr/bin/python /usr/share/apport/apport-kde
> ProcEnviron:
> PATH=(custom, no user)
> LANG=en_US.UTF-8
> LANGUAGE=
> SHELL=/bin/bash
> ProcVersionSignature: Ubuntu 2.6.31-3.19-generic
> Signal: 6
> SourcePackage: apport
> StacktraceTop:
> raise () from /lib/libc.so.6
> abort () from /lib/libc.so.6
> __assert_fail () from /lib/libc.so.6
> ?? () from /usr/lib/libX11.so.6
> _XEventsQueued () from /usr/lib/libX11.so.6
> Title: apport-kde assert failure: python: ../../src/xcb_io.c:242:
> process_responses: Assertion `(((long) (dpy->last_request_read) - (long)
> (dpy->request)) <= 0)' failed.
> Uname: Linux 2.6.31-3-generic x86_64
> UserGroups:
>
>
>