Bug 53666 - X11 server crashes with signial 11 caught
Summary: X11 server crashes with signial 11 caught
Alias: None
Product: Red Hat Public Beta
Classification: Retired
Component: XFree86   
(Show other bugs)
Version: roswell
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Mike A. Harris
QA Contact: David Lawrence
Depends On:
TreeView+ depends on / blocked
Reported: 2001-09-14 12:27 UTC by adler
Modified: 2007-04-18 16:37 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2001-10-15 20:51:14 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

Description adler 2001-09-14 12:27:15 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2) Gecko/20010809

Description of problem:
The X11 server verion 4.x crashes randomly with signal #11 being caught by
the server and forcing the servier to exit.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.Run X11
2.Wait, sometimes a day or two
3.What your windows disapear

Additional info:

It looks like this problem is coupled to the IRQ of the vga contoller card.
It also looks like an SMP problem. I have found a workaround. Currently I
have a dual intel SMP system which uses the VIA chipset. I observe the
following regarding this bug.

1) Running full SMP, with IRQ enabled in the card and "dri" loaded into X11
server. (This is my default way of running my system.) X11 would crash on
signal 11 when in active use. (i.e. my clicking around mozilla, reading
e-mail, listening to mp3s etc.) When I left the system alone and the screen
saver took over, the system would either hard freeze or the X11 server
would die.

2) Running in uniprocessor mode, with IRQ enabled and "dri" loaded, same

3) SMP running with IRQ *disabled* and "dri" not laoded, same result

4) Uniprocessor mode, with IRQ disabled and "dri" not loaded. Works!!!!

I have a strong suggestion. Can you please try running X11 on an SMP
system, and turn on the IRQ and make sure "dri" is loaded. You may be able
to reproduce this bug.

Comment 1 Mike A. Harris 2001-09-18 08:26:19 UTC
I run X 24/7 on 2 SMP servers and have never had a crash.
I'm unable to do anything at all without proper full bug report data however,
including knowing what video card you're using, as well as config files,
X server logs, kernel "messages" log (trimmed and privatized if necessary)
all submitted as file attachments using the link below.

Comment 2 Mike A. Harris 2001-10-15 09:19:50 UTC
Please supply requested info.

Comment 3 adler 2001-10-15 20:51:10 UTC
I'm very swamped with work right now. I'll try and get back to you. Currently
I'm running in non-smp mode, with video card interupts disabled and X11 is very
stable this way. My time scale to getting back to this problem is about 1 month.
Sorry for not being more forth coming with this.

Comment 4 Mike A. Harris 2001-11-01 12:19:42 UTC
Closing bug, no information to go on.  Reopen bug when information
is available if you like.


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