GUI Permissions
See original GitHub issueHi Linus! I have ran the following command:
echo 'SUBSYSTEM=="backlight",RUN+="/bin/chmod 666 /sys/class/backlight/%k/brightness /sys/class/backlight/%k/bl_power /sys/devices/platform/ff150000.i2c/i2c-3/3-0045/tinker_mcu_bl
"' | sudo tee -a /etc/udev/rules.d/backlight-permissions.rules
Note, I ran for both the TinkerBoard and the Pi files, as all files exist on my OS. This does not fix the permissions for me.
Sidenote, I actually had to replace the %k with rpi_backlight:
echo 'SUBSYSTEM=="backlight",RUN+="/bin/chmod 666 /sys/class/backlight/rpi_backlight/brightness /sys/class/backlight/rpi_backlight/bl_power /sys/devices/platform/ff150000.i2c/i2c-3/3-0045/tinker_mcu_bl
> "' | sudo tee -a /etc/udev/rules.d/backlight-permissions.rules
as I got:
chmod: cannot access '/sys/class/backlight/%k/brightness': No such file or directory
chmod: cannot access '/sys/class/backlight/%k/bl_power': No such file or directory
Just wondering if you have any idea why both the udev rule wouldn’t work, nor the %k in that rule?
Issue Analytics
- State:
- Created 3 years ago
- Comments:5 (5 by maintainers)
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Not sure if it was a problem with the echo or the tee, but just manually creating the file seems to work: /etc/udev/rules.d/backlight-permissions.rules:
Thanks!
Weird! Glad you got it working though, thanks for reporting back!