Sage Crash Report

dave dobbs

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Oct 13, 2019, 8:03:21 PM10/13/19

to sage-s...@googlegroups.com

OS: Xubuntu 18.04.1 64-bit

downloaded from SAGE: sage-8.9-Ubuntu_16.04-x86_64.tar.bz2

decompressed with tar -xjf sage-8.9...

I did a cd to the uncompressed folder, SageMath, and issued the command:

./sage

It then went thru a long sequence of patches, put up the following msg box:

┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.9, Release Date: 2019-09-29 │
│ Using Python 2.7.15. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘

and then issued the Oops message.

As I recall I went through the very same sequence with SAGE 8.8 & it's worked just fine...Dave

Sage_crash_report.txt

Dima Pasechnik

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Oct 14, 2019, 2:57:57 AM10/14/19

to sage-support

Dear Dave,

On Mon, Oct 14, 2019 at 1:03 AM dave dobbs <dav...@gmail.com> wrote:
>
> OS: Xubuntu 18.04.1 64-bit
> downloaded from SAGE: sage-8.9-Ubuntu_16.04-x86_64.tar.bz2

wrong version - notice that you are running Ubuntu 18.04, and you're
trying a tarball fot 16.04.

Tarball for 18.04 is not ready yet, I think.

HTH
Dima

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Sinan Kapçak

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Oct 18, 2019, 7:07:55 PM10/18/19

to sage-s...@googlegroups.com

on Linux Ubuntu 19.10 -

Sage installed by binaries downloaded by a torrent.

Downloaded and extracted and ./sage.

***************************************************************************

IPython post-mortem report

{'commit_hash': u'033ab93c7',
'commit_source': 'installation',
'default_encoding': 'UTF-8',
'ipython_path': '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython',
'ipython_version': '5.8.0',
'os_name': 'posix',
'platform': 'Linux-5.3.0-18-generic-x86_64-with-debian-buster-sid',
'sys_executable': '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/bin/python2',
'sys_platform': 'linux2',
'sys_version': '2.7.15 (default, Oct 4 2019, 05:22:55) \n[GCC 7.4.0]'}

***************************************************************************

***************************************************************************

Crash traceback:

---------------------------------------------------------------------------
---------------------------------------------------------------------------
ImportErrorPython 2.7.15: /home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/bin/python2
Sat Oct 19 01:57:57 2019
A problem occurred executing Python code. Here is the sequence of function
calls leading up to the error, with the most recent (innermost) call last.
/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/src/bin/sage-ipython in <module>()
1 #!/usr/bin/env sage-python23
2 # -*- coding: utf-8 -*-
3 """
4 Sage IPython startup script.
5 """
6
7 # Display startup banner. Do this before anything else to give the user
8 # early feedback that Sage is starting.
9 from sage.misc.banner import banner
10 banner()
11
12 from sage.repl.interpreter import SageTerminalApp
13
14 app = SageTerminalApp.instance()
---> 15 app.initialize()
global app.initialize = <bound method SageTerminalApp.initialize of <sage.repl.interpreter.SageTerminalApp object at 0x7f1a30ef3c50>>
16 app.start()

</home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/decorator.py:decorator-gen-110> in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/traitlets/config/application.py in catch_config_error(method=<function initialize>, app=<sage.repl.interpreter.SageTerminalApp object>, *args=(None,), **kwargs={})
72 TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR = False
73 else:
74 raise ValueError("Unsupported value for environment variable: 'TRAITLETS_APPLICATION_RAISE_CONFIG_FILE_ERROR' is set to '%s' which is none of {'0', '1', 'false', 'true', ''}."% _envvar )
75
76
77 @decorator
78 def catch_config_error(method, app, *args, **kwargs):
79 """Method decorator for catching invalid config (Trait/ArgumentErrors) during init.
80
81 On a TraitError (generally caused by bad config), this will print the trait's
82 message, and exit the app.
83
84 For use on init methods, to prevent invoking excepthook on invalid input.
85 """
86 try:
---> 87 return method(app, *args, **kwargs)
method = <function initialize at 0x7f1a2d892c80>
app = <sage.repl.interpreter.SageTerminalApp object at 0x7f1a30ef3c50>
args = (None,)
kwargs = {}
88 except (TraitError, ArgumentError) as e:
89 app.print_help()
90 app.log.fatal("Bad config encountered during initialization:")
91 app.log.fatal(str(e))
92 app.log.debug("Config at the time: %s", app.config)
93 app.exit(1)
94
95
96 class ApplicationError(Exception):
97 pass
98
99
100 class LevelFormatter(logging.Formatter):
101 """Formatter with additional `highlevel` record
102

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/terminal/ipapp.py in initialize(self=<sage.repl.interpreter.SageTerminalApp object>, argv=None)
301
302 return super(TerminalIPythonApp, self).parse_command_line(argv)
303
304 @catch_config_error
305 def initialize(self, argv=None):
306 """Do actions after construct, but before starting the app."""
307 super(TerminalIPythonApp, self).initialize(argv)
308 if self.subapp is not None:
309 # don't bother initializing further, starting subapp
310 return
311 # print self.extra_args
312 if self.extra_args and not self.something_to_run:
313 self.file_to_run = self.extra_args[0]
314 self.init_path()
315 # create the shell
--> 316 self.init_shell()
self.init_shell = <bound method SageTerminalApp.init_shell of <sage.repl.interpreter.SageTerminalApp object at 0x7f1a30ef3c50>>
317 # and draw the banner
318 self.init_banner()
319 # Now a variety of things that happen after the banner is printed.
320 self.init_gui_pylab()
321 self.init_extensions()
322 self.init_code()
323
324 def init_shell(self):
325 """initialize the InteractiveShell instance"""
326 # Create an InteractiveShell instance.
327 # shell.display_banner should always be False for the terminal
328 # based app, because we call shell.show_banner() by hand below
329 # so the banner shows *before* all extension loading stuff.
330 self.shell = self.interactive_shell_class.instance(parent=self,
331 profile_dir=self.profile_dir,

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/interpreter.py in init_shell(self=<sage.repl.interpreter.SageTerminalApp object>)
772 self.shell.has_sage_extensions = SAGE_EXTENSION in self.extensions
773
774 # Load the %lprun extension if available
775 try:
776 import line_profiler
777 except ImportError:
778 pass
779 else:
780 self.extensions.append('line_profiler')
781
782 if self.shell.has_sage_extensions:
783 self.extensions.remove(SAGE_EXTENSION)
784
785 # load sage extension here to get a crash if
786 # something is wrong with the sage library
--> 787 self.shell.extension_manager.load_extension(SAGE_EXTENSION)
self.shell.extension_manager.load_extension = <bound method ExtensionManager.load_extension of <IPython.core.extensions.ExtensionManager object at 0x7f1a2b74b550>>
global SAGE_EXTENSION = 'sage'
788
789

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/core/extensions.py in load_extension(self=<IPython.core.extensions.ExtensionManager object>, module_str='sage')
70
71 Returns the string "already loaded" if the extension is already loaded,
72 "no load function" if the module doesn't have a load_ipython_extension
73 function, or None if it succeeded.
74 """
75 if module_str in self.loaded:
76 return "already loaded"
77
78 from IPython.utils.syspathcontext import prepended_to_syspath
79
80 with self.shell.builtin_trap:
81 if module_str not in sys.modules:
82 with prepended_to_syspath(self.ipython_extension_dir):
83 __import__(module_str)
84 mod = sys.modules[module_str]
---> 85 if self._call_load_ipython_extension(mod):
self._call_load_ipython_extension = <bound method ExtensionManager._call_load_ipython_extension of <IPython.core.extensions.ExtensionManager object at 0x7f1a2b74b550>>
mod = <module 'sage' from '/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/__init__.py'>
86 self.loaded.add(module_str)
87 else:
88 return "no load function"
89
90 def unload_extension(self, module_str):
91 """Unload an IPython extension by its module name.
92
93 This function looks up the extension's name in ``sys.modules`` and
94 simply calls ``mod.unload_ipython_extension(self)``.
95
96 Returns the string "no unload function" if the extension doesn't define
97 a function to unload itself, "not loaded" if the extension isn't loaded,
98 otherwise None.
99 """
100 if module_str not in self.loaded:

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/IPython/core/extensions.py in _call_load_ipython_extension(self=<IPython.core.extensions.ExtensionManager object>, mod=<module 'sage' from '/home/kapcak/Documents/Sage...al/lib/python2.7/site-packages/sage/__init__.py'>)
117 """
118 from IPython.utils.syspathcontext import prepended_to_syspath
119
120 if (module_str in self.loaded) and (module_str in sys.modules):
121 self.unload_extension(module_str)
122 mod = sys.modules[module_str]
123 with prepended_to_syspath(self.ipython_extension_dir):
124 reload(mod)
125 if self._call_load_ipython_extension(mod):
126 self.loaded.add(module_str)
127 else:
128 self.load_extension(module_str)
129
130 def _call_load_ipython_extension(self, mod):
131 if hasattr(mod, 'load_ipython_extension'):
--> 132 mod.load_ipython_extension(self.shell)
mod.load_ipython_extension = <function load_ipython_extension at 0x7f1a31989c08>
self.shell = <sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7f1a2d893e10>
133 return True
134
135 def _call_unload_ipython_extension(self, mod):
136 if hasattr(mod, 'unload_ipython_extension'):
137 mod.unload_ipython_extension(self.shell)
138 return True
139
140 def install_extension(self, url, filename=None):
141 """Download and install an IPython extension.
142
143 If filename is given, the file will be so named (inside the extension
144 directory). Otherwise, the name from the URL will be used. The file must
145 have a .py or .zip extension; otherwise, a ValueError will be raised.
146
147 Returns the full path to the installed file.

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/__init__.py in load_ipython_extension(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell object>,))
1 __all__ = ['all']
2
3 # Set sage.__version__ to the current version number. This is analogous
4 # to many other Python packages.
5 from sage.version import version as __version__
6
7 # Make sure that the correct zlib library is loaded. This is needed
8 # to prevent the system zlib to be loaded instead of the Sage one.
9 # See https://trac.sagemath.org/ticket/23122
10 import zlib
11
12 # IPython calls this when starting up
13 def load_ipython_extension(*args):
14 import sage.repl.ipython_extension
---> 15 sage.repl.ipython_extension.load_ipython_extension(*args)
sage.repl.ipython_extension.load_ipython_extension = <function load_ipython_extension at 0x7f1a2f478050>
args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7f1a2d893e10>,)
16
17
18 # Monkey-patch inspect.isfunction() to support Cython functions.
19 def isfunction(obj):
20 """
21 Check whether something is a function.
22
23 We assume that anything which has a genuine ``__code__``
24 attribute (not using ``__getattr__`` overrides) is a function.
25 This is meant to support Cython functions.
26
27 EXAMPLES::
28
29 sage: from inspect import isfunction
30 sage: def f(): pass
31 sage: isfunction(f)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py in wrapper(*args=(<sage.repl.interpreter.SageTerminalInteractiveShell object>,), **kwargs={})
547 ....: if work:
548 ....: return 'foo worked'
549 ....: raise RuntimeError("foo didn't work")
550 sage: foo(False)
551 Traceback (most recent call last):
552 ...
553 RuntimeError: foo didn't work
554 sage: foo(True)
555 'foo worked'
556 sage: foo(False)
557 sage: foo(True)
558 """
559 @wraps(func)
560 def wrapper(*args, **kwargs):
561 if not wrapper.has_run:
--> 562 result = func(*args, **kwargs)
result = undefined
global func = undefined
args = (<sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7f1a2d893e10>,)
kwargs = {}
563 wrapper.has_run = True
564 return result
565 wrapper.has_run = False
566 return wrapper
567
568
569 @run_once
570 def load_ipython_extension(ip):
571 """
572 Load the extension in IPython.
573 """
574 # this modifies ip
575 SageCustomizations(shell=ip)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py in load_ipython_extension(ip=<sage.repl.interpreter.SageTerminalInteractiveShell object>)
560 def wrapper(*args, **kwargs):
561 if not wrapper.has_run:
562 result = func(*args, **kwargs)
563 wrapper.has_run = True
564 return result
565 wrapper.has_run = False
566 return wrapper
567
568
569 @run_once
570 def load_ipython_extension(ip):
571 """
572 Load the extension in IPython.
573 """
574 # this modifies ip
--> 575 SageCustomizations(shell=ip)
global SageCustomizations = <class 'sage.repl.ipython_extension.SageCustomizations'>
global shell = undefined
ip = <sage.repl.interpreter.SageTerminalInteractiveShell object at 0x7f1a2d893e10>

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py in __init__(self=<sage.repl.ipython_extension.SageCustomizations object>, shell=<sage.repl.interpreter.SageTerminalInteractiveShell object>)
418 def __init__(self, shell=None):
419 """
420 Initialize the Sage plugin.
421 """
422 self.shell = shell
423
424 self.auto_magics = SageMagics(shell)
425 self.shell.register_magics(self.auto_magics)
426
427 import sage.misc.edit_module as edit_module
428 self.shell.set_hook('editor', edit_module.edit_devel)
429
430 self.init_inspector()
431 self.init_line_transforms()
432
--> 433 import sage.all # until sage's import hell is fixed
sage.all = undefined
434
435 self.shell.verbose_quit = True
436 self.set_quit_hook()
437
438 self.register_interface_magics()
439
440 if SAGE_IMPORTALL == 'yes':
441 self.init_environment()
442
443 def register_interface_magics(self):
444 """
445 Register magics for each of the Sage interfaces
446 """
447 from sage.repl.interface_magic import InterfaceMagic
448 InterfaceMagic.register_all(self.shell)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/all.py in <module>()
82
83 import sage.misc.lazy_import
84 from sage.misc.all import * # takes a while
85 from sage.typeset.all import *
86 from sage.repl.all import *
87
88 from sage.misc.sh import sh
89
90 from sage.libs.all import *
91 from sage.data_structures.all import *
92 from sage.doctest.all import *
93
94 from sage.structure.all import *
95 from sage.rings.all import *
96 from sage.arith.all import *
---> 97 from sage.matrix.all import *
global sage.matrix.all = undefined
98
99 from sage.symbolic.all import *
100 from sage.modules.all import *
101 from sage.monoids.all import *
102 from sage.algebras.all import *
103 from sage.modular.all import *
104 from sage.sat.all import *
105 from sage.schemes.all import *
106 from sage.graphs.all import *
107 from sage.groups.all import *
108 from sage.arith.power import generic_power as power
109 from sage.databases.all import *
110 from sage.categories.all import *
111 from sage.sets.all import *
112 from sage.probability.all import *

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/__init__.py in <module>()
1 # Resolve a cyclic import
----> 2 import sage.matrix.args
global sage.matrix.args = undefined

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/args.pyx in init sage.matrix.args (build/cythonized/sage/matrix/args.c:21226)()
10 # This program is free software: you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation, either version 2 of the License, or
13 # (at your option) any later version.
14 # http://www.gnu.org/licenses/
15 #*****************************************************************************
16
17 from __future__ import absolute_import, generator_stop
18
19 cimport cython
20 from cpython.sequence cimport PySequence_Fast
21 from cysignals.signals cimport sig_check
22 from cypari2.gen cimport Gen
23 from cypari2.types cimport typ, t_MAT, t_VEC, t_COL, t_VECSMALL, t_LIST, t_STR, t_CLOSURE
24
---> 25 from .matrix_space import MatrixSpace
global matrix_space = undefined
global MatrixSpace = undefined
26 from sage.rings.all import ZZ, RDF, CDF
27 from sage.structure.coerce cimport (coercion_model,
28 is_numpy_type, py_scalar_parent)
29 from sage.structure.element cimport Element, RingElement, Vector
30 from sage.arith.long cimport pyobject_to_long
31 from sage.misc.misc_c import sized_iter
32 from sage.categories import monoids
33
34
35 CommutativeMonoids = monoids.Monoids().Commutative()
36
37
38 cdef inline bint element_is_scalar(Element x):
39 """
40 Should this element be considered a scalar (as opposed to a vector)?

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_space.py in <module>()
31 # (at your option) any later version.
32 # https://www.gnu.org/licenses/
33 # ****************************************************************************
34 from __future__ import print_function, absolute_import
35 from six.moves import range
36 from six import iteritems, integer_types
37
38 # System imports
39 import sys
40 import operator
41
42 # Sage matrix imports
43 from . import matrix_generic_dense
44 from . import matrix_generic_sparse
45
---> 46 from . import matrix_modn_sparse
global matrix_modn_sparse = undefined
47
48 from . import matrix_mod2_dense
49 from . import matrix_gf2e_dense
50
51 from . import matrix_integer_dense
52 from . import matrix_integer_sparse
53
54 from . import matrix_rational_dense
55 from . import matrix_rational_sparse
56
57 from . import matrix_polynomial_dense
58 from . import matrix_mpolynomial_dense
59
60 # Sage imports
61 from sage.misc.superseded import deprecation

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_integer_sparse.pxd in init sage.matrix.matrix_modn_sparse (build/cythonized/sage/matrix/matrix_modn_sparse.cpp:16317)()
1 from sage.modules.vector_integer_sparse cimport mpz_vector
2 from sage.ext.mod_int cimport mod_int
3 from .matrix_sparse cimport Matrix_sparse
4
----> 5 cdef class Matrix_integer_sparse(Matrix_sparse):
global cdef = undefined
global Matrix_integer_sparse = undefined
global Matrix_sparse = undefined
6 cdef mpz_vector* _matrix
7
8 cdef _mod_int_c(self, mod_int p)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_integer_dense.pxd in init sage.matrix.matrix_integer_sparse (build/cythonized/sage/matrix/matrix_integer_sparse.cpp:15958)()
1 from sage.libs.gmp.types cimport *
2 from sage.libs.flint.types cimport fmpz_mat_t
3
4 from .matrix_dense cimport Matrix_dense
5 from sage.rings.integer cimport Integer
6 from sage.ext.mod_int cimport *
7
8 ctypedef long* GEN
9
---> 10 cdef class Matrix_integer_dense(Matrix_dense):
global cdef = undefined
global Matrix_integer_dense = undefined
global Matrix_dense = undefined
11 cdef fmpz_mat_t _matrix
12 cdef object _pivots
13 cdef int mpz_height(self, mpz_t height) except -1
14 cdef _mod_int_c(self, mod_int modulus)
15 cdef _mod_two(self)
16 cdef _pickle_version0(self)
17 cdef _unpickle_version0(self, data)
18 cpdef _export_as_string(self, int base=?)
19 cdef void set_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j, const mpz_t value)
20 cdef void set_unsafe_si(self, Py_ssize_t i, Py_ssize_t j, long value)
21 cdef void set_unsafe_double(self, Py_ssize_t i, Py_ssize_t j, double value)
22 cdef inline void get_unsafe_mpz(self, Py_ssize_t i, Py_ssize_t j, mpz_t value)
23 cdef inline double get_unsafe_double(self, Py_ssize_t i, Py_ssize_t j)
24
25 # HNF Modn
26 cdef int _hnf_modn(Matrix_integer_dense self, Matrix_integer_dense res,
27 unsigned int det) except -1
28 cdef int* _hnf_modn_impl(Matrix_integer_dense self, unsigned int det,
29 Py_ssize_t nrows, Py_ssize_t ncols) except NULL
30
31 cdef Matrix_integer_dense _new(self, Py_ssize_t nrows, Py_ssize_t ncols)

/home/kapcak/Documents/Sage89/sage-8.9-Ubuntu_16.04-x86_64/SageMath/local/lib/python2.7/site-packages/sage/matrix/matrix_mod2_dense.pxd in init sage.matrix.matrix_integer_dense (build/cythonized/sage/matrix/matrix_integer_dense.c:55466)()
1 from .matrix_dense cimport Matrix_dense
2 from sage.libs.m4ri cimport *
3
----> 4 cdef class Matrix_mod2_dense(Matrix_dense):
global cdef = undefined
global Matrix_mod2_dense = undefined
global Matrix_dense = undefined
5 cdef mzd_t *_entries
6 cdef object _one
7 cdef object _zero
8
9 cdef set_unsafe_int(self, Py_ssize_t i, Py_ssize_t j, int value)
10
11 cpdef Matrix_mod2_dense _multiply_m4rm(Matrix_mod2_dense self, Matrix_mod2_dense right, int k)
12 cpdef Matrix_mod2_dense _multiply_strassen(Matrix_mod2_dense self, Matrix_mod2_dense right, int cutoff)
13
14 # For conversion to other systems
15 cpdef _export_as_string(self)

ImportError: libpng12.so.0: cannot open shared object file: No such file or directory

***************************************************************************

History of session input:
*** Last line of input (may not be in above history):

Dima Pasechnik

unread,

Oct 18, 2019, 7:16:47 PM10/18/19

to sage-support

On Sat, Oct 19, 2019 at 12:07 AM Sinan Kapçak <sinan...@gmail.com> wrote:
>
> on Linux Ubuntu 19.10 -
> Sage installed by binaries downloaded by a torrent.
> Downloaded and extracted and ./sage.

it would be surprising if a binary for an earlier Ubuntu version
worked on 19.10.
You might need to build Sage from source...

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Eric Gourgoulhon

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Oct 21, 2019, 8:02:20 AM10/21/19

to sage-support

Le lundi 14 octobre 2019 08:57:57 UTC+2, Dima Pasechnik a écrit :

Dear Dave,

On Mon, Oct 14, 2019 at 1:03 AM dave dobbs <dav...@gmail.com> wrote:
>
> OS: Xubuntu 18.04.1 64-bit
> downloaded from SAGE: sage-8.9-Ubuntu_16.04-x86_64.tar.bz2

wrong version - notice that you are running Ubuntu 18.04, and you're
trying a tarball fot 16.04.

Tarball for 18.04 is not ready yet, I think.

The SageMath 8.9 binaries for Ubuntu 18.04 are now available from the download page: