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    Subject[2.6.25-rc6] possible regression: X server dying
    In the five days since I booted a 2.6.25-rc6 kernel on my development
    machine, it has happened three times already that I came back to the
    machine to find that the X server had exited, killing all applications
    that still had a window open. This has never happened with previous
    kernel versions (2.6.22.17, 2.6.24.3, 2.6.25-rc5), so I suspect some
    relation to the latest rc kernel.

    Syslog entries around the time of the crash (identical each time):

    Mar 24 21:59:57 xenon kernel: [424469.161592] PM: Removing info for No
    Bus:vcs7
    Mar 24 21:59:57 xenon kernel: [424469.162591] PM: Removing info for No
    Bus:vcsa7
    Mar 24 21:59:57 xenon kernel: [424469.179556] uhci_hcd 0000:00:1d.1:
    release dev 4 ep81-INT, period 8, phase 4, 93 us
    Mar 24 21:59:57 xenon gconfd (ts-21705): Signal 15 erhalten,
    ordungsgemäßes Herunterfahren
    Mar 24 21:59:57 xenon gconfd (ts-21705): Beenden
    Mar 24 21:59:57 xenon gdm[21341]: WARNING: gdm_slave_xioerror_handler:
    Schwerwiegender X-Fehler - :0 wird neu gestartet
    Mar 24 21:59:58 xenon kernel: [426716.212842] PM: Adding info for No
    Bus:vcs7
    Mar 24 21:59:58 xenon kernel: [426716.213300] PM: Adding info for No
    Bus:vcsa7
    Mar 24 21:59:58 xenon kernel: [426716.295997] PM: Removing info for No
    Bus:vcs7
    Mar 24 21:59:58 xenon kernel: [426716.296110] PM: Removing info for No
    Bus:vcsa7
    Mar 24 21:59:59 xenon kernel: [426716.434662] PM: Adding info for No
    Bus:vcs7
    Mar 24 21:59:59 xenon kernel: [426716.434742] PM: Adding info for No
    Bus:vcsa7
    Mar 24 22:00:00 xenon kernel: [426717.727427] uhci_hcd 0000:00:1d.1:
    reserve dev 4 ep81-INT, period 8, phase 4, 93 us
    Mar 24 22:00:00 xenon kernel: [424472.319521] uhci_hcd 0000:00:1d.1:
    release dev 4 ep81-INT, period 8, phase 4, 93 us
    Mar 24 22:00:00 xenon kernel: [426717.997926] uhci_hcd 0000:00:1d.1:
    reserve dev 4 ep81-INT, period 8, phase 4, 93 us
    Mar 24 22:00:02 xenon gconfd (root-15531): (Version 2.20.0) wird
    gestartet, Prozesskennung 15531, Benutzer »root«
    Mar 24 22:00:02 xenon gconfd (root-15531): Die Adresse
    »xml:readonly:/etc/gconf/gconf.xml.mandatory« wurde an der Position 0 zu
    einer nur lesbaren Konfigurationsquelle aufgelöst
    Mar 24 22:00:02 xenon gconfd (root-15531): Die Adresse
    »xml:readwrite:/root/.gconf« wurde an der Position 1 zu einer
    schreibbaren Konfigurationsquelle aufgelöst
    Mar 24 22:00:02 xenon gconfd (root-15531): Die Adresse
    »xml:readonly:/etc/gconf/gconf.xml.defaults« wurde an der Position 2 zu
    einer nur lesbaren Konfigurationsquelle aufgelöst
    Mar 24 22:00:02 xenon gconfd (root-15531): Die Adresse
    »xml:readonly:/etc/gconf/gconf.xml.schemas« wurde an der Position 3 zu
    einer nur lesbaren Konfigurationsquelle aufgelöst
    Mar 24 22:00:05 xenon kernel: [426722.904631] gtk-window-deco[15527]:
    segfault at 4 ip b785c98a sp bfa4d160 error 4 in
    libcairo.so.2.11.5[b7852000+7c000]

    (The translation of the German error message from gdm is:
    "Serious X error - restarting :0"
    The German language messages from gconfd are probably not important,
    as they appear identically during a regular X logout/login cycle.)

    I'm at a loss where to start investigating this. Bisecting appears
    impractical given the error happens about every other day with no
    obvious triggering condition (except me being afk for a longer time.)

    Configuration: Pentium D940, 2 GB RAM, Intel 965 chipset, Matrox
    G550 PCIe graphics adapter, openSUSE 10.3 32 bit install.

    Ideas?

    Thanks
    Tilman


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