I found a way to make X hang (ask me if interested), but after a
Alt+SysRq+k the system hangs completely.
Alt+SysRq+s-u-b works ok. If I try Alt+SysRq+k however,
a ~100x100 area on the screen blinks for a few seconds, the X image
disappears (i.e. the screen goes blank) and the system hangs completely.
Neither Alt+SysRq+s-u-b nor (Ctrl+)Alt-F? does work (no disk activity
at all) and I have to press the reset button.
I've been using 2.2.1+devfs with matroxfb on a Pentium 120 with
RedHat 5.1+ for a while now with no problems.
X is XF86_SVGA. Should I try XF86_FBDEV (not installed...)?
I have no good idea on how to try to locate this problem. It is 100%
repeatable however, so if someone gives me some ideas, I'm interested
in trying them...
Vital stats:
Kernel modules 2.1.121
Gnu C 2.7.2.3
Binutils 2.9.1.0.4
Linux C Library 2.0.7
Dynamic linker ldd (GNU libc) 2.0.7
Linux C++ Library 2.8.1
Linux C++ Library 2.8.1
Procps 1.2.7
Mount 2.8a
Net-tools (1999-01-01)
Kbd 0.94
Sh-utils 1.16
/Mikael
PS. I tried strace on the X-server during the crash. Here is the
result:
$ tail -n 470 /root/X.log |head -n 30
gettimeofday({924875248, 997662}, NULL) = 0
select(128, [0 1 3 4 6 7 8 9 10 11 12 13 14 15 16 17 18], NULL, NULL,
{94, 620000}) = 1 (in [18], left {94, 620000})
read(18, "$\20\1\0+\0\1\0", 4096) = 8
writev(18, [{"\1\2\344)\0\0\0\0\27\0\0\3\0\0\0"..., 32}], 1) = 32
gettimeofday({924875249, 1512}, NULL) = 0
select(128, [0 1 3 4 6 18], NULL, NULL, {94, 616000}) = 1 (in [18],
left {94, 620000})
gettimeofday({924875249, 4489}, NULL) = 0
select(128, [0 1 3 4 6 18], NULL, NULL, {94, 613000}) = 1 (in [18],
left {94, 620000})
read(18, "*\2\3\0\27\0\0\3\0\0\0\0\177\0\1"..., 4096) = 20
gettimeofday({924875249, 6217}, NULL) = 0
gettimeofday({924875249, 6569}, NULL) = 0
select(128, [0 1 3 4 6 7 8 9 10 11 12 13 14 15 16 17 18], NULL, NULL,
{94, 611000}) = 1 (in [18], left {94, 620000})
read(18, "\n\2\2\0:\0\0\3", 4096) = 8
gettimeofday({924875249, 23956}, NULL) = 0
writev(13, [{"\22\31[\6&\0\0\0:\0\0\3\0\0\0\3029652481
29652541
29652547
29652569
29652611
29652617
29652619
29652631
29652661
29652683
29652697
29652737
29652769
29652809
29652827
29652841
... continues a few hundred lines, then stops.
-- ~~~ Mikael Nilsson ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Student of Mathematics/Computer Science at Uppsala University. Information wants to be free -- copyright protection is for dinosaurs! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/