Hi, I'll try to sumarize my findings about this topic:
1.- powermanga accepts all joysticks from SDL 2.- Reading SDL: SDL_SYS_JoystickInit function for Linux seems to look for /dev/input/event*, /dev/input/js*, /dev/js* devices. Some extra checks are done at this function EV_IsJoystick. 3.- Linux 'joydev' module creates /dev/input/js0 device for de MS usb mouse 045e:075c 4.- udev isn't involved (or should be somehow transparent) Some questions I can't reply by myself: - Should Linux create a js device for 045e:075c? - Should SDL accept this js device? - Should powermanga accept a js without axes? FTR: As a hotfix for powermanga: # modprobe -r joydev Regards, On Mon, Dec 18, 2017 at 06:21:59PM +0000, Antoni Villalonga wrote: > Hi, > > My problem trying to play powermanga remains :-/ > > On Mon, Dec 18, 2017 at 05:33:04PM +0000, Debian Bug Tracking System wrote: > > This is an automatic notification regarding your Bug report > > which was filed against the udev package: > > > > #884595: udev: consider blacklisting fake joystick devices > > > > It has been closed by Michael Biebl <bi...@debian.org>. > > > > Their explanation is attached below along with your original report. > > If this explanation is unsatisfactory and you have not received a > > better one in a separate message then please contact Michael Biebl > > <bi...@debian.org> by > > replying to this email. > > > > > > -- > > 884595: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=884595 > > Debian Bug Tracking System > > Contact ow...@bugs.debian.org with problems > > > Date: Mon, 18 Dec 2017 18:28:40 +0100 > > From: Michael Biebl <bi...@debian.org> > > To: Markus Koschany <a...@debian.org> > > Cc: 884595-d...@bugs.debian.org, Antoni Villalonga <ant...@friki.cat>, > > cont...@bugs.debian.org > > Subject: Re: kernel recognizes keyboards and mice as joysticks > > > > Am 18.12.2017 um 17:55 schrieb Markus Koschany: > > > retitle 884595 udev: consider blacklisting fake joystick devices > > > reassign 884595 udev > > > clone 884595 -1 > > > reassign -1 src:linux > > > retitle -1 kernel recognizes keyboards and mice as joysticks > > > thanks > > > > > > Am 18.12.2017 um 00:33 schrieb Michael Biebl: > > >> Control: reassign -1 powermanga > > >> > > >> Am 17.12.2017 um 23:24 schrieb Markus Koschany: > > >>> Am 17.12.2017 um 23:02 schrieb Michael Biebl: > > >>> [...] > > >>>> I don't have access to such a device, but it looks like this device > > >>>> node > > >>>> /dev/input/js0 is created by the kernel. > > >>>> Please elaborate why this is supposed to be a bug in udev. > > >>> > > >>> I'm not familiar with udev and I would have expected that the device > > >>> manager is responsible for creating or handling device nodes. This could > > >>> also be a bug in the kernel. We have received similar bug reports [1] > > >>> [2] for games in the past. > > >>> > > >>> In #714399 [3] Peter De Wachter pointed out that it might be a > > >>> longstanding kernel bug, reported as: > > >>> > > >>> https://bugzilla.kernel.org/show_bug.cgi?id=28912 > > >>> https://bugzilla.kernel.org/show_bug.cgi?id=37982 > > >>> > > >>> But there is also a way to work around this issue by blacklisting such > > >>> devices with udev rules: > > >>> > > >>> https://github.com/denilsonsa/udev-joystick-blacklist > > >>> > > >>> I'm not sure if someone ever intends to fix these kernel bugs. If udev > > >>> is not responsible for creating those fake joystick devices for > > >>> keyboards and mice, then please consider to blacklist the affected > > >>> devices, so that they will not be confused with joysticks. > > >> > > >> I'm reassigning this back to powermanga. the udev package is not a > > >> proper place for such a blacklist. I'll let you decide if you want to > > >> reassign this bug to the kernel or if you want to provide such a > > >> blacklist on your own. > > > > > > Michael what point does it serve to reassign this bug back to > > > powermanga? I explained to you that keyboards and mice are recognized as > > > joysticks and powermanga is surely not responsible for creating device > > > nodes. All games and applications with joystick support are affected. > > > > > > I am going to clone this bug report and reassign it to src:linux and > > > reassign 884595 back to udev. > > > > > > Reasoning for reassignment: > > > > > > The kernel is responsible for creating device nodes. Various keyboard > > > and mouse models are detected as joysticks though. This makes several > > > games hard or even impossible to control because the application code > > > assumes a joystick is a joystick and not a keyboard or a mouse. > > > > > > There are two longstanding kernel bugs which describe the same issue for > > > two devices: > > > > > > https://bugzilla.kernel.org/show_bug.cgi?id=28912 > > > https://bugzilla.kernel.org/show_bug.cgi?id=37982 > > > > > > Here are two more Debian bug reports which describe the same issue > > > > > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=711350 > > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=714401 > > > > > > The issue is still reproducible with the latest kernel in Sid. > > > > > > If this bug cannot be fixed in time for the next stable release aka > > > Buster then I would like to see that the udev maintainers create a > > > blacklist for such keyboards and mice. > > > > > > Preliminary work is already available at: > > > > > > https://github.com/denilsonsa/udev-joystick-blacklist > > > > > > If the udev maintainers don't want to create and maintain such a > > > blacklist, then please mark this bug report as "wontfix" accordingly. > > > Please don't reassign it back to affected games and applications. > > > Whether I or someone else wants to provide a patch should not be the > > > criterion for bug assignment. > > > > > > > And you reassigned it back even though I explained that udev is not the > > proper place to maintain such a blacklist. > > > > I'm thus going to close this bug report > > > > > > -- > > Why is it that all of the instruments seeking intelligent life in the > > universe are pointed away from Earth? > > > > > > > > Date: Sun, 17 Dec 2017 13:25:09 +0100 > > From: Antoni Villalonga <ant...@friki.cat> > > To: Debian Bug Tracking System <sub...@bugs.debian.org> > > Subject: powermanga: Controls didn't work > > X-Mailer: reportbug 7.1.7 > > > > Package: powermanga > > Version: 0.93.1-2 > > Severity: important > > > > Dear Maintainer, > > > > The game didn't work at all. > > > > After loading the game the selected option is 'Quit'. 'Up arrow' key didn't > > work on main menu, so I only can change menu option by pressing 'down > > arrow'. > > > > Once 'Play' option is selected the game starts and the ship goes to up-left > > corner and I can't move it from there. > > > > Regards, > > > > > > -- System Information: > > Debian Release: buster/sid > > APT prefers unstable > > APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable') > > Architecture: amd64 (x86_64) > > Foreign Architectures: i386 > > > > Kernel: Linux 4.13.0-1-amd64 (SMP w/4 CPU cores) > > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), > > LANGUAGE=en_US.UTF-8 (charmap=UTF-8) > > Shell: /bin/sh linked to /bin/dash > > Init: systemd (via /run/systemd/system) > > > > Versions of packages powermanga depends on: > > ii libc6 2.25-4 > > ii libpng16-16 1.6.34-1 > > ii libsdl-mixer1.2 1.2.12-14 > > ii libsdl1.2debian 1.2.15+dfsg2-0.1 > > ii powermanga-data 0.93.1-2 > > > > powermanga recommends no packages. > > > > powermanga suggests no packages. > > > > -- no debconf information > > > -- > Antoni Villalonga > http://friki.cat/ -- Antoni Villalonga http://friki.cat/ _______________________________________________ Pkg-systemd-maintainers mailing list Pkg-systemd-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-systemd-maintainers
