Quote from MadCatX :

Quote from Roronoa Zoro :

"ls -l" of "/sys/bus/hid/drivers/logitech/0003:046D:C29A.0003":

total 0
-r--r--r-- 1 root root 4096 Nov 6 04:27 country
lrwxrwxrwx 1 root root 0 Nov 6 04:19 driver -> ../../../../../../../../../bus/hid/drivers/logitech
drwxr-xr-x 3 root root 0 Nov 6 04:19 hidraw
drwxr-xr-x 3 root root 0 Nov 6 04:19 input
-r--r--r-- 1 root root 4096 Nov 6 04:27 modalias
-r--r--r-- 1 root root 4096 Nov 6 04:27 report_descriptor
lrwxrwxrwx 1 root root 0 Nov 6 04:18 subsystem -> ../../../../../../../../../bus/hid
-rw-r--r-- 1 root root 4096 Nov 6 04:18 uevent

This is a very weird output. Are you really running at least kernel 4.1? Is the support for Logitech wheels (CONFIG_LOGIWHEELS_FF=y) compiled in? Can you boot the kernel with "hid.debug=1" parameter and post the output of dmesg after you have plugged the wheel in? There is absolutely no way that the sysfs entries would be missing unless something fails during the initialization.

CONFIG_LOGIWHEELS_FF is not compiled. I assumed CONFIG_LOGIWHEELS_FF was for force feedback only. I'll compile the kernel with CONFIG_LOGIWHEELS_FF=y and give it a try. Thank you.

Quote :

What interface did you check? 4.1+ kernels should pick up DFGT correctly. Can you check the output of "/sys/bus/hid/drivers/logitech/<dev>/alternate_modes" and "/sys/bus/hid/drivers/logitech/<dev>/real_id" when the wheel is connected? Value of <dev> will vary.

With evtest: /dev/input/event1 (event1 was for DFGT)
With jstest: /dev/input/js0 (js0 was for DFGT)

I was not able to find alternate_modes or real_id.

"ls -l" of "/sys/bus/hid/drivers/logitech/":

"ls -l" of "/sys/bus/hid/drivers/logitech/0003:046D:C29A.0003":

Quote :

This sounds like a hardware problem to me because the driver has no control over the autocalibration.

I have noticed that the offcenter problem does not occur when I use the kernel provided driver (without LTWheelConf). With LTWheelConf, sometimes the wheel is offcenterd and sometimes it is not. And without LTWheelConf, all the buttons are not detected.

Quote :

When does this happen? I'd image this to be a problem with a game and not the wheel of drivers.

As soon as I plugin DFGT, that initial rotation of the steering wheel happens after that it starts vibrating. I have to steer it a little either to the left or right to make it stop. But it reoccurs when I use the steering wheel and again I have to steer it a little to make it stop.

I am trying to use Logitech DFGT with a Debian based OS(kernel release 4.1.7). A lot of posts in this thread say that LTWheelConf is no longer needed and DFGT is supported natively by the kernel which is true. But, I tested my DFGT with evtest and jstest and found out few buttons and H-shifter not being detected. So I installed LTWheelConf.

Everything works fine except the wheel is off-centered (to the right about 45 degrees) after the calibration. If I unplug and replug the DFGT's usb, it ends up facing normal.
Is there any way this can be avoided?

One more problem is that the wheel starts vibrating even though FFB is disabled. Can this rumbling effect be disabled?

I bought a new DFGT. I am using it with linux and everything works fine. But even though Force feedback is disabled, the steering wheel starts vibrating when it is positioned at the center. The problem is similar to the one in this thread. But I am using linux.

How can I disable this rumble(vibration) effect?