This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• libsdl-1.2.15-joystick.patch (libsdl-1.2.15-joystick.patch, text/plain, 2012-04-28 02:00:50 +0000, 527 bytes)

Reported in version: 1.2.15
Reported for operating system, platform: Linux, All

Comments on the original bug report:

On 2012-04-28 02:00:50 +0000, Alon Bar-Lev wrote:

Created attachment 850
libsdl-1.2.15-joystick.patch

Hello,
In 1.2.15 there was a changed:

•           for ( i=0; i<ABS_MAX; ++i ) {
  

•           for ( i=0; i<ABS_MISC; ++i ) {
  

---

This caused some axis to not be detected.

I use sixaxis, it looks like the following aixs are important, all above ABS_MISC.

index: 3b
Joystick has absolute axis: 3b
Values = { 0, 0, 1023, 3, 63 }
index: 3c
Joystick has absolute axis: 3c
Values = { 485, 0, 1023, 3, 63 }
index: 3d
Joystick has absolute axis: 3d
Values = { 388, 0, 1023, 3, 63 }
index 3e
Joystick has absolute axis: 3e
Values = { 481, 0, 1023, 3, 63 }

Attached is a patch reverting this, all works now.

On 2012-04-28 14:06:09 +0000, Alon Bar-Lev wrote:

Hello,

Found commit...

The explanation is strange, as I use "standard PlayStation 3 controller plugged in via USB" and after change SDL totally ignoring the left stick X axes.

Using linux-3.3.3 and SDL-1.2.15 with attachment# 850 works correctly.

So the problem [if exists] is in different place.

---

HG changeset patch

User Ryan C. Gordon icculus@icculus.org

Date 1310603889 25200

Node ID aa0e501baca0eec3568481e9f61359b3118daf96

Parent dd0f52bf2bfaa14de95268ed9e0dfaef81f2ed72

Linux: Search a smaller set of potential joystick axes.

Newer kernels seem to report bogus axes in the higher ranges, for example
with a standard PlayStation 3 controller plugged in via USB.

diff -r dd0f52bf2bfa -r aa0e501baca0 src/joystick/linux/SDL_sysjoystick.c
--- a/src/joystick/linux/SDL_sysjoystick.c Tue Jul 05 22:05:56 2011 -0400
+++ b/src/joystick/linux/SDL_sysjoystick.c Wed Jul 13 17:38:09 2011 -0700
@@ -703,7 +703,7 @@
++joystick->nbuttons;
}
}

•    for (i = 0; i < ABS_MAX; ++i) {
  

•    for (i = 0; i < ABS_MISC; ++i) {
         /* Skip hats */
         if (i == ABS_HAT0X) {
             i = ABS_HAT3Y;
  

On 2012-06-03 02:10:31 +0000, Ryan C. Gordon wrote:

(In reply to comment # 0)

Attached is a patch reverting this, all works now.

It works, but SDL thinks the SixAxis has 27 axes, which is probably not correct.

I just committed a patch that corrects the lost left-stick X axis...my original patch didn't take into account that the extra axes would still send data, and overwrite the first axis's state.

--ryan.

On 2012-06-06 08:18:47 +0000, Alon Bar-Lev wrote:

Confirmed!
Thanks.

On 2018-08-13 07:19:09 +0000, Rene Dudfield wrote:

Arch Linux has a patch for this here: https://git.archlinux.org/svntogit/packages.git/tree/trunk/SDL-1.2.15-ignore_insane_joystick_axis.patch?h=packages/sdl

On 2018-08-13 11:45:59 +0000, Ozkan Sezer wrote:

(In reply to Rene Dudfield from comment # 4)

Arch Linux has a patch for this here:
https://git.archlinux.org/svntogit/packages.git/tree/trunk/SDL-1.2.15-
ignore_insane_joystick_axis.patch?h=packages/sdl

That patch is already in the SDL-1.2 branch.