Al 17/07/2013 21:05, En/na Gustau Pérez i Querol ha escrit:
Hi,
I'm having panics or hard freezes when starting X with an Intel
video card. The machine is able to start old X+twm without problems
but when I try gnome3 (in normal or fallback mode, doesn't matter) the
machine panics or hard freezes.
This doesn't happen when running X with vesa. With vesa the gnome
is able to start in fallback (no composition) mode. Also, an old i386
with an nvidia card is able to run that gnome3 with composition so I'd
say it has to do with the intel card.
These are the specs of the machine:
FreeBSD 10.0-CURRENT #4 r+3dc57aa: Wed Jul 17 15:13:07 CEST 2013
root@portgus:/usr/obj/usr/src/sys/CUSTOM amd64
FreeBSD clang version 3.3 (tags/RELEASE_33/final 183502) 20130610
RAM: 8GB
Video Card: Intel chipid=0x00468086
The debugging knobs in the kernel config are there. I can also
confirm that I can break to the debugger with CTRL+ALT+ESC before
starting X. The world was build without debug symbols.
Because the machine runs with an Intel card, I had to use my $work
dockstation to obtain a serial port and do the debug via serial port
with another machine.
When starting X, either the machine freezes hard (and so no
CTRL+ALT+ESC) or the machine panics. It has never executed X without
panics or freezes.
I was able to obtain a core dump, the results are at:
https://dl.dropboxusercontent.com/u/2094962/core.txt.4
I was unable to dive any further because the dump only shows the
kernel side of things. The bt only seems to show the kernel side and
the user side of things seems to be corrupt.
Any other info I can obtain from the machine in the moment of the
panic, let me know. I can easy do the debug via serial port.
Gus
Reading the backtrace I see this:
panic: pmap_release: pmap resident count -398580 != 0
which comes from amd64/amd64/pmap.c:1936. I suspect that
pmap->pm_stats.resident_count being negative is a bug.
Can this be caused by a userspace process? If that's possible, any
idea why I get a corrupted stack an thus I'm not able to find the root
of the problem.
G.
--
Salut i força,
Gustau
---------------------------------------------------------------------------
Prou top-posting : http://ca.wikipedia.org/wiki/Top-posting
Stop top-posting : http://en.wikipedia.org/wiki/Posting_style
O O O Gustau Pérez i Querol
O O O Unitat de Gestió dels departaments
O O O Matemàtica Aplicada IV i Enginyeria Telemàtica
Universitat Politècnica de Catalunya
Edifici C3 - Despatx S101-B
UPC Campus Nord UPC
C/ Jordi Girona, 1-3
08034 - Barcelona
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "[email protected]"
