frogatto/frogatto — Issue #25: Background layers sometimes flicker in Plagued Mine
Author: ssokolow
Created: 2012-02-10 02:11:06+00:00
State: open

Shortly after I first enter the Plagued Mine level and sometimes when I return to the entry point after going all the way up to the two treasure boxes (heart piece and bomb), the background layers will flicker once or twice while I'm moving.

It seems to affect only the layers deeper than the gray-brown rock (the ones which are predominantly blue-green) and, while I haven't been able to get a perfect look at the phenomenon, it seems to sometimes be black and sometimes blue-green.

I'm not sure how to reproduce the phenomenon but I'm running current Lubuntu Oneiric Ocelot (11.10) with kernel version 3.0.0-12-generic, the nVidia Binary Drivers (280.13-0ubuntu6), a non-composited desktop (LXDE, "Lubuntu" profile), and TwinView-based multi-head (2560x1024, LCDs via DVI and HDMI, GT430 GPU).

I don't remember whether it's possible to run frogatto fullscreen, but I'm currently running it windowed. Running inside gdb has no effect on this issue but seems to prevent a crash I'm also experiencing around the two treasure boxes on this level.

It's been about a month and a half since I last logged out, so my kernel may be a touch behind current, but I'm not getting API mismatch errors from GL-using applications, so the version number I gave for the nVidia drivers should match the active drivers.

How would one track down a bug like this and what can I do to help?