Problem installing sage on Ubuntu.
Maarten Derickx
I tried installing sage on Ubuntu 18.04.6 LTS by downloading sage-9.4-Ubuntu_18.04-x86_64.tar.bz2 from one of the mirrors, unpacking the tar.bz2 file and then starting sage. However this results in a broken sage. Anyone any idea what is causing this?
Below is just one command that doesn't work, but there are multiple things causing similar stack traces.
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 9.4, Release Date: 2021-08-22 │
│ Using Python 3.9.5. Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
sage: M = ModularSymbols(79)
sage: S = M.cuspidal_submodule()
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
~/sages/SageMath/local/lib/python3.9/site-packages/sage/structure/category_object.pyx in sage.structure.category_object.CategoryObject.getattr_from_category (build/cythonized/sage/structure/category_object.c:7074)()
838 try:
--> 839 return self.__cached_methods[name]
840 except KeyError:
KeyError: '_ModularSymbolsAmbient__cuspidal_submodule'
During handling of the above exception, another exception occurred:
AttributeError Traceback (most recent call last)
~/sages/SageMath/local/lib/python3.9/site-packages/sage/modular/modsym/ambient.py in cuspidal_submodule(self)
1398 try:
-> 1399 return self.__cuspidal_submodule
1400 except AttributeError:
~/sages/SageMath/local/lib/python3.9/site-packages/sage/structure/category_object.pyx in sage.structure.category_object.CategoryObject.__getattr__ (build/cythonized/sage/structure/category_object.c:6993)()
832 """
--> 833 return self.getattr_from_category(name)
834
~/sages/SageMath/local/lib/python3.9/site-packages/sage/structure/category_object.pyx in sage.structure.category_object.CategoryObject.getattr_from_category (build/cythonized/sage/structure/category_object.c:7159)()
847
--> 848 attr = getattr_from_other_class(self, cls, name)
849 self.__cached_methods[name] = attr
~/sages/SageMath/local/lib/python3.9/site-packages/sage/cpython/getattr.pyx in sage.cpython.getattr.getattr_from_other_class (build/cythonized/sage/cpython/getattr.c:2551)()
366 dummy_error_message.name = name
--> 367 raise AttributeError(dummy_error_message)
368 cdef PyObject* attr = instance_getattr(cls, name)
AttributeError: 'MatrixSpace_with_category' object has no attribute '_cache__zero_matrix'
During handling of the above exception, another exception occurred:
SignalError Traceback (most recent call last)
<ipython-input-2-ba035e7f5442> in <module>
----> 1 S = M.cuspidal_submodule()
~/sages/SageMath/local/lib/python3.9/site-packages/sage/modular/modsym/ambient.py in cuspidal_submodule(self)
1404 except AttributeError:
1405 pass
-> 1406 S = self.boundary_map().kernel()
1407 S._set_is_cuspidal(True)
1408 S._is_full_hecke_module = True
~/sages/SageMath/local/lib/python3.9/site-packages/sage/modules/matrix_morphism.py in kernel(self)
714 []
715 """
--> 716 V = self.matrix().kernel()
717 D = self.domain()
718 if not D.is_ambient():
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix2.pyx in sage.matrix.matrix2.Matrix.left_kernel (build/cythonized/sage/matrix/matrix2.c:31551)()
4877
4878 tm = verbose("computing left kernel for %sx%s matrix" % (self.nrows(), self.ncols()),level=1)
-> 4879 K = self.transpose().right_kernel(*args, **kwds)
4880 self.cache('left_kernel', K)
4881 verbose("done computing left kernel for %sx%s matrix" % (self.nrows(), self.ncols()),level=1,t=tm)
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix2.pyx in sage.matrix.matrix2.Matrix.right_kernel (build/cythonized/sage/matrix/matrix2.c:31019)()
4715
4716 # Go get the kernel matrix, this is where it all happens
-> 4717 M = self.right_kernel_matrix(*args, **kwds)
4718
4719 ambient = R**self.ncols()
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix2.pyx in sage.matrix.matrix2.Matrix.right_kernel_matrix (build/cythonized/sage/matrix/matrix2.c:29656)()
4316 if M is None:
4317 try:
-> 4318 format, M = self._right_kernel_matrix(algorithm=algorithm, proof=proof)
4319 except AttributeError:
4320 pass
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix_rational_sparse.pyx in sage.matrix.matrix_rational_sparse.Matrix_rational_sparse._right_kernel_matrix (build/cythonized/sage/matrix/matrix_rational_sparse.c:8888)()
797 [0 0 1]
798 """
--> 799 return self.dense_matrix()._right_kernel_matrix()
800
801
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix_rational_dense.pyx in sage.matrix.matrix_rational_dense.Matrix_rational_dense._right_kernel_matrix (build/cythonized/sage/matrix/matrix_rational_dense.cpp:14103)()
1424 else:
1425 A, _ = self._clear_denom()
-> 1426 K = A._rational_kernel_iml().transpose().change_ring(QQ)
1427 verbose("done computing right kernel matrix over the rationals for %sx%s matrix" % (self.nrows(), self.ncols()),level=1, t=tm)
1428 return 'computed-iml-rational', K
~/sages/SageMath/local/lib/python3.9/site-packages/sage/matrix/matrix_integer_dense.pyx in sage.matrix.matrix_integer_dense.Matrix_integer_dense._rational_kernel_iml (build/cythonized/sage/matrix/matrix_integer_dense.cpp:32420)()
3882 time = verbose('computing null space of %s x %s matrix using IML'%(self._nrows, self._ncols))
3883 cdef mpz_t * m = fmpz_mat_to_mpz_array(self._matrix)
-> 3884 sig_on()
3885 dim = nullspaceMP(self._nrows, self._ncols, m, &mp_N)
3886 sig_off()
SignalError: Illegal instruction
