When switching to 'vesa' driver, supertux still displayed as a garbled mix of diagonal lines, but there was no hard freeze. Switching back to 'ati' and setting default depth to 16 *seems* to have alleviated the problem, although this is obviously not an optimal solution.
When switching to 'vesa' driver, supertux still displayed as a garbled mix of diagonal lines, but there was no hard freeze. Switching back to 'ati' and setting default depth to 16 *seems* to have alleviated the problem, although this is obviously not an optimal solution.