Bug#607908: libsdl1.2debian: does not reopen joystick device
vnaum at vnaum.com
Fri Dec 24 06:14:39 UTC 2010
Tags: patch upstream
SDL opens joystick device only once at startup. If usb connection is
for some reason (bad USB cable, cheap gamepad, little brother tripping
on the wire)
- your game is ruined. Input device file is gone for a short time,
opened file handle is no longer valid. Kernel re-creates device file
after connection is back, but libsdl does not re-open it.
Steps to reproduce: plug USB joystick, run SDL-based application that
uses joystick, unplug your joystick for a brief time and plug it back
The patch tries to re-open the device if read operation reports bad file
/ no such device. I know about possible caveats (like, the new device
can have different name, multiple joysticks can re-appear in different
order or maybe the device plugged is totally different one), but still I
believe anything is better then forcing user to start the game from the
very beginning. Especially annoying if user is 3 years old and can't
start the game on his own.
I (OK, not I but my son) tested it for a week, and it work just fine
with mame, mess, mednafen and supertux.
It also works for lenny version of libsdl, but you have to
#define SDL_INPUT_LINUXEV 1
, because patch only fixes this flag combination (the one that is used in
-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (990, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-5-openvz-686 (SMP w/1 CPU core)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libsdl1.2debian depends on:
ii libsdl1.2debian-oss 1.2.14-6.1 Simple DirectMedia Layer (with X11
libsdl1.2debian recommends no packages.
libsdl1.2debian suggests no packages.
-- no debconf information
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