/dev/input/event* --permission denied

narz · 12-24-2013, 06:07 PM

Hey so I'm trying to use my PS DS3 gamepad with the mednafen emulator, and it's trying to access the event files in /dev/input with permission denied. Would it be safe to do something like chmod 777 /dev/input/event*?

yars · 12-24-2013, 07:18 PM

Quote:

Would it be safe to do something like chmod 777 /dev/input/event*?

I don't know does it is safe or not, but all the contents of /dev is managed by udev and for this reason this content can be dynamically changed. But the X server can have access to /dev/events/* when he is launched by a regular user, but this user should be a member of, for example, a video group, this does allow to use for this user a video acceleration. I think you need to make the your regular user the member of several additional groups like plugdev and video. Which groups the your user is a member currently?
Also, if it's may be need, you may redefine the udev's behavior by editing a your udev rules, but it may be hard.

narz · 12-24-2013, 10:29 PM

I am part of video and plugdev groups, that's not the issue...

gengisdave · 12-26-2013, 05:16 AM

Code:

ls -la /dev/input/

crw-r-----  1 root root 13, 64 dic 26 10:19 event0
crw-r-----  1 root root 13, 65 dic 26 10:19 event1
crw-r-----  1 root root 13, 63 dic 26 10:19 mice
crw-r-----  1 root root 13, 32 dic 26 10:19 mouse0
crw-r-----  1 root root 13, 33 dic 26 11:09 mouse1

try on your pc, there is no group membership that can grant you write access; you can manually change it through

Code:

chown root.plugdev && chmod 660

or edit udev rules to do it automatically for you