Messages in this thread | | | Date | Tue, 25 Oct 2005 23:27:23 +0200 | From | Alessandro Suardi <> | Subject | Re: X unkillable in R state sometimes on startx , /proc/sysrq-trigger T output attached |
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On 10/25/05, Alessandro Suardi <alessandro.suardi@gmail.com> wrote: > Happened to me the third time now in the last > couple of months, always with different Linus > kernels (plus ACX100 wireless module from > Denis Vlasenko's snapshots) all hanging off > an up-to-date FC4, all built with latest stock > GCC; this last is: > > [root@incident ~]# cat /proc/version > Linux version 2.6.14-rc5-git5 (asuardi@incident) (gcc version 4.0.2) > #1 PREEMPT Tue Oct 25 14:32:46 CEST 2005 > > Symptoms: startx at the command prompt gets > the blank screen, then... nothing. Keyboard is > dead (CapsLock doesn't get its led lit), no VT > switching works. Box is still reachable via ssh > through its wireless network card, all looks OK > except for X running and piling up CPU time, > and apparently untraceable (pstack, strace > hang trying to attach it) and unkillable (kill -9 > doesn't kill it). > > I took a couple of SysRQ 't' dumps via the > /proc/sysrq-trigger facility and the outcome is > attached - actually it's a full messages log, > startup to reboot. > > Exact sequence this time: > 1. boot > 2. insmod 0.3.17 acx driver > -> notice I can't contact my wireless AP > 3. rmmod it, insmod 0.3.16 driver > -> notice I am an idiot, plug in the wireless AP power cord > 4. rmmod 0.3.16, insmod 0.3.17, iwconfig wlan0 up > 5. switch to VT2 (Alt-F2), login as non-root, run startx > <blank screen, dead keyboard> > 6. ssh in from remote box, take SysRQ dumps, reboot > > If anyone has an idea on what to do to try and reproduce > and/or debug further, that'd be cool. > > Box is a Dell Latitude C640 laptop, PIV@1.8Ghz, > 1GB RAM, with a USR2210 802.11b wireless > PC Card; video card is a Radeon 7500 M7 LW.
OK, let's forget about attachments (100+ KB), the full messages file can be found here: http://xoomer.virgilio.it/incident/messages
Thanks again, ciao,
--alessandro
"All it takes is one decision A lot of guts, a little vision to wave Your worries, and cares goodbye"
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