Re: matlab

[Rick Rezinas <rick@beerdrinker.org>]

if you can check out the lines shortly preceding the first

read(4, 0xbfffdc0c, 32)                 = -1 EAGAIN (Resource temporarily
unavailable)

there may be some useful information there.  I don't know nearly enough to
do anything with this stuff ;)

rick

On Tue, 20 Feb 2001, Pascal Hos wrote:

> Well the same happens when using ssh or rsh or any variant of remote login. 
> The environments are exactly the same when logged in locally or remote.
> 
> strace matlab hangs on the following statement:
> bash-2.03$ strace matlab
> execve("/usr/local/bin/matlab", ["matlab"], [/* 23 vars */]) = 0
> brk(0)                                  = 0x80bb3ec
> .......
> 
> <snip>
> 
> .......
> read(4, 0xbfffdc0c, 32)                 = -1 EAGAIN (Resource temporarily 
> unavailable)
> select(5, [4], NULL, NULL, NULL)        = 1 (in [4])
> read(4, "\1\0:\1\0\0\0\0\1\0\0\0\2\0\0\0t\370\377\277\334\234*\10"..., 32) = 
> 32
> write(4, "\217\16\2\0\0\0\0\0", 8)      = 8
> read(4, 0xbfffdbc8, 32)                 = -1 EAGAIN (Resource temporarily 
> unavailable)
> select(5, [4], NULL, NULL, NULL)        = 1 (in [4])
> read(4, "\1\370;\1\200\0\0\0\4\0\0\0 \0\0\0\0\20\0\0\0\0\0\0\0\0"..., 32) = 32
> read(4, "#\0\0\0\4\0\0\0\1\0\0\0\10\0\0\0\10\0\0\0\10\0\0\0\0\0"..., 128) = 
> 128
> rt_sigprocmask(SIG_SETMASK, NULL, [RT_0], 8) = 0
> rt_sigsuspend([]
> 
> I have no idea what that means. Maybe one of you knows. Anyway, thanks for 
> replying.
> 
> Pascal
> 
> On Tuesday 20 February 2001 17:46, Brian May wrote:
> > >>>>> "Erik" == Erik Steffl <steffl@bigfoot.com> writes:
> >
> >     Erik> Pascal Hos wrote:
> >     >> I just received my matlab R12 student version and I'm having
> >     >> some difficulties getting it to work correctly on potato. When
> >     >> I start it from an xterm the splash screen shows up and it then
> >     >> the program hangs. The strange part is that if I su as myself
> >     >> and then execute matlab, everything works just fine!? The same
> >     >> problem occurs as root. What could be happening here?
> >
> > Try strace matlab?
> >
> >     Erik>   I suspect that program tries to figure out who's ruinning
> >     Erik> it and does not succeed - perhaps it uses entry in utmp/wtmp
> >     Erik> and xterm does not log entry there but su does. also check
> >     Erik> the differences between environments (when you open xterm
> >     Erik> and then when you su)
> >
> > Is Matlab still based on libc5?
> >
> > If so that might be a problem - the format of utmp/wtmp IIRC has
> > changed from libc5 to libc6.
> >
> > (then again, if that was the case it shouldn't work with su...).
> 
> 
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