Hello,
I've been happily '$ sage -updgrade'ing since sage 2.10 or so, and
recently noticed that I couldn't use Maxima (details below). I'm not
sure for how long I've had this problem. Knowing the disclaimer that
applies to upgrading, I downloaded the linux 32-bit binaries for 3.1.1
from sagemath.org and still had the same problem. I'm running Ubuntu
Hardy on an AMD laptop.
If I try any command that calls Maxima, I have to wait for a timeout,
and then get an error. Specific system information and a traceback are
below.
Thanks very much for any help,
Jason Bandlow
[EMAIL PROTECTED]:~$ uname -a
Linux jason-laptop 2.6.24-19-generic #1 SMP Wed Aug 20 22:56:21 UTC 2008
i686 GNU/Linux
[EMAIL PROTECTED]:~$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 76
model name : Mobile AMD Sempron(tm) Processor 3500+
stepping : 2
cpu MHz : 800.000
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt
rdtscp lm 3dnowext 3dnow up pni cx16 lahf_lm extapic cr8_legacy ts fid
vid ttp tm stc
bogomips : 1597.60
clflush size : 64
sage: log(4,2)
Timeout exceeded in read_nonblocking().
<pexpect.spawn instance at 0x9f2fb2c>
version: 2.0 ($Revision: 1.151 $)
command: /home/jason/sage/local/bin/maxima
args: ['/home/jason/sage/local/bin/maxima', '-p',
'/home/jason/sage/local/bin/sage-maxima.lisp']
patterns:
\(\%i[0-9]+\)
buffer (last 100 chars):
before (last 100 chars):
*** - invalid byte #xFD in CHARSET:UTF-8 conversion, not a Unicode-16
Break 1 [4]>
after: <class 'pexpect.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: 0
pid: 14736
child_fd: 3
timeout: 30
delimiter: <class 'pexpect.EOF'>
logfile: None
maxread: 10000
searchwindowsize: None
delaybeforesend: 0
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
/home/jason/Desktop/sage-3.1.1-debian32-intel-i686-Linux/<ipython
console> in <module>()
/home/jason/sage/local/lib/python2.5/site-packages/IPython/Prompts.py in
__call__(self, arg)
533
534 # and now call a possibly user-defined print mechanism
--> 535 manipulated_val = self.display(arg)
536
537 # user display hooks can change the variable to be
stored in
/home/jason/sage/local/lib/python2.5/site-packages/IPython/Prompts.py in
_display(self, arg)
559 return IPython.generics.result_display(arg)
560 except TryNext:
--> 561 return self.shell.hooks.result_display(arg)
562
563 # Assign the default display method:
/home/jason/sage/local/lib/python2.5/site-packages/IPython/hooks.py in
__call__(self, *args, **kw)
132 #print "prio",prio,"cmd",cmd #dbg
133 try:
--> 134 ret = cmd(*args, **kw)
135 return ret
136 except ipapi.TryNext, exc:
/home/jason/sage/local/lib/python2.5/site-packages/IPython/hooks.py in
result_display(self, arg)
160
161 if self.rc.pprint:
--> 162 out = pformat(arg)
163 if '\n' in out:
164 # So that multi-line strings line up with the left
column of
/home/jason/sage/local/lib/python2.5/pprint.py in pformat(self, object)
109 def pformat(self, object):
110 sio = _StringIO()
--> 111 self._format(object, sio, 0, 0, {}, 0)
112 return sio.getvalue()
113
/home/jason/sage/local/lib/python2.5/pprint.py in _format(self, object,
stream, indent, allowance, context, level)
127 self._readable = False
128 return
--> 129 rep = self._repr(object, context, level - 1)
130 typ = _type(object)
131 sepLines = _len(rep) > (self._width - 1 - indent -
allowance)
/home/jason/sage/local/lib/python2.5/pprint.py in _repr(self, object,
context, level)
193 def _repr(self, object, context, level):
194 repr, readable, recursive = self.format(object,
context.copy(),
--> 195 self._depth, level)
196 if not readable:
197 self._readable = False
/home/jason/sage/local/lib/python2.5/pprint.py in format(self, object,
context, maxlevels, level)
205 and whether the object represents a recursive construct.
206 """
--> 207 return _safe_repr(object, context, maxlevels, level)
208
209
/home/jason/sage/local/lib/python2.5/pprint.py in _safe_repr(object,
context, maxlevels, level)
290 return format % _commajoin(components), readable, recursive
291
--> 292 rep = repr(object)
293 return rep, (rep and not rep.startswith('<')), False
294
/home/jason/Desktop/sage-3.1.1-debian32-intel-i686-Linux/sage_object.pyx
in sage.structure.sage_object.SageObject.__repr__
(sage/structure/sage_object.c:795)()
/home/jason/sage/local/lib/python2.5/site-packages/sage/calculus/calculus.py
in _repr_(self, simplify)
4922 return self._simp._repr_(simplify=False)
4923 else:
-> 4924 return self.simplify()._repr_(simplify=False)
4925
4926 ops = self._operands
/home/jason/sage/local/lib/python2.5/site-packages/sage/calculus/calculus.py
in simplify(self)
3235 return self._simp
3236 except AttributeError:
-> 3237 S =
evaled_symbolic_expression_from_maxima_string(self._maxima_init_())
3238 S._simp = None
3239 self._simp = S
/home/jason/sage/local/lib/python2.5/site-packages/sage/calculus/calculus.py
in evaled_symbolic_expression_from_maxima_string(x)
8328 x^e + I + e^pi
8329 """
-> 8330 return symbolic_expression_from_maxima_string(maxima.eval(x))
8331
8332 def first_var(expr):
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/expect.py
in eval(self, code, strip, synchronize, **kwds)
915 try:
916 with gc_disabled():
--> 917 return '\n'.join([self._eval_line(L, **kwds) for
L in code.split('\n') if L != ''])
918 except KeyboardInterrupt:
919 # DO NOT CATCH KeyboardInterrupt, as it is being caught
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/maxima.py
in _eval_line(self, line, allow_use_file, wait_for_prompt, reformat,
error_check)
573 return repr(a)
574 else:
--> 575 self._sendline(line)
576
577 if not wait_for_prompt:
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/maxima.py
in _sendline(self, str)
444
445 def _sendline(self, str):
--> 446 self._sendstr(str)
447 os.write(self._expect.child_fd, os.linesep)
448
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/maxima.py
in _sendstr(self, str)
449 def _sendstr(self, str):
450 if self._expect is None:
--> 451 self._start()
452 try:
453 os.write(self._expect.child_fd, str)
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/maxima.py
in _start(self)
434
435 def _start(self):
--> 436 Expect._start(self)
437 self._eval_line('0;')
438
/home/jason/sage/local/lib/python2.5/site-packages/sage/interfaces/expect.py
in _start(self, alt_message, block_during_init)
462 failed_to_start.append(self.__name)
463 print msg
--> 464 raise RuntimeError, "Unable to start %s"%self.__name
465 self._expect.timeout = None
466 with gc_disabled():
RuntimeError: Unable to start maxima
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