This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1949276 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: hirsute -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1949276 Title: linux-image-raspi PWM not available Status in linux package in Ubuntu: Incomplete Bug description: Hello, I'm using Raspberry Pi 4b with Ubuntu 21.10. Seems like all 5.13 kernels don't have PWM support. Replication steps: - Enable pwm in config.txt: `dtoverlay=pwm-2chan,pin=12,func=4,pin2=13,func2=4` - Check /sys/class/pwm Expected result: PWM exists - What I get: ``` root@raspberrypi:~# ls -l /sys/class/pwm/ total 0 root@raspberrypi:~# ``` --- Same output using 5.11.0-1021-raspi kernel: ``` root@raspberrypi:~# uname -a Linux raspberrypi 5.11.0-1021-raspi #22-Ubuntu SMP PREEMPT Wed Oct 6 17:30:38 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux root@raspberrypi:~# ls -l /sys/class/pwm/ total 0 lrwxrwxrwx 1 root root 0 окт 31 00:49 pwmchip0 -> ../../devices/platform/soc/fe20c000.pwm/pwm/pwmchip0 ``` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1949276/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp