Re: Xorg freezes, crashes, locks, shoots and leaves

From: Andrea Giuliano (a.giuliano_at_iccu.sbn.it)
Date: 09/07/04

  • Next message: Didier Casse: "Re: rpm and SPEC file" 
    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Tue, 07 Sep 2004 10:09:08 +0200

    Dear Gene,

    the C-A-K* and C-A-K-/ sequence are slightly different from
    C-A-Backspace. They should not kill the X server, but just force an
    application to release X resources in case it is blocked for some
    reason. I'm sorry, I don't have any further details (they're to much
    complex for me), but I found those sequence useful in some cases.

    By the way, I would really appreciate if you told me wheter this had
    helped you or not: this is an issue that I ciclycally run across, and
    every time I forget how I solved it!

    Best regards.

    Gene Smith wrote:

    > Andrea Giuliano wrote, On 09/06/2004 04:26 AM:
    >
    >> Dear Gene,
    >>
    >> I know your problem very well! Anyway, after having X freezing the
    >> system for several months, at present it doesn't happen any more.
    >> It's hard to say way.
    >>
    >> I only can suggest you to add the following lines to xorg.conf:
    >>
    >> Section "ServerFlags"
    >> Option "AllowDeactivateGrabs" "true"
    >> Option "AllowClosedownGrabs" "true"
    >> EndSection
    >>
    >> They allow you to use C-A-K-* and C-A-K-/ to try to unlock X in some
    >> situations (see man xorg.conf for a few detail). To avoid
    >> misunderstandings, please note that C-A-K-* means "Control, Alt,
    >> Keypad *" pressed together.
    >
    >
    > Ctrl-alt-backspace, I thought, was supposed to kill X by default
    > (unless disabled somehow). Have not tried ctrl-alt-bspace with working
    > fc2 system. Perhap it is different with new xorg and you need the
    > above Section?
    >
    > I will read the man put these in my file and see what happens. Thanks.
    >
    >>
    >> This could be a start to investigate what is happening to your
    >> system. I would not be very optimistic, but at least you can try,
    >> it's very easy. Remember to restart your X server after the changes
    >> above.
    >>
    >> Best regards... and good luck!!!
    >>
    >> Gene Smith wrote:
    >>
    >>> Maybe there is something wrong with my computer, I don't know, but
    >>> it passes the overnight test of memtest86 from the fc 2 cd and fsck.
    >>>
    >>> The problem is that X seems to just freeze up at random times.
    >>> Sometimes it goes for days with no problem. Sometimes it is twice in
    >>> one day, like today. It also seems to be more frequent (possibly)
    >>> with the latest kernel 2.6.8-1.521 (and I have kept completely
    >>> updated with yum).
    >>>
    >>> My driver is the default nvidia for a GeForce3 Ti 200 card and
    >>> system is 500Mhz Athlon with 384M memory. It has run other linux
    >>> systems for years with no problem, e.g., RH 7.2, Debian.
    >>>
    >>> By "freeze" I mean the keyboard and mouses button do nothing, only
    >>> the mouse cursor moves. The system does not really crash. The freeze
    >>> is never associated with doing any particular thing, AFAICT.
    >>>
    >>> I can go run vncviewer from another box and it comes up and works
    >>> fine. After "killall -9 X" I can then login again and it goes again.
    >>> I have seen this with KDE and GNOME (but I typically just run KDE).
    >>>
    >>> I have been having this problem during fc2 test and after clean
    >>> install of fc2. See my previous message on this list, Subject "X
    >>> lock / crash + slowdowns - fc2" and possibly others where I have
    >>> mentioned this.
    >>>
    >>> I have no screen saver active.
    >>>
    >>> Any idea what could be causing this or how I can troubleshoot it? Or
    >>> is it a continuing bug in fc2 or Xorg?
    >>>
    >>> Tks,
    >>> -gene
    >>>
    >>>
    >>>
    >>>
    >>
    >>
    >
    > 

    -- 
Andrea Giuliano, Ph. D.
ICCU - Istituto Centrale per il Catalogo Unico
Viale Castro Pretorio 105, Rome - ITALY
Tel. +39064989509, Fax +39064059302
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