[Kernel-packages] [Bug 1931684] Re: cdc_acm: acm_port_activate - usb_submit_urb(ctrl irq) failed

I did an upgrade from kernel 5.4.0-74-generic to 5.4.0-77-generic and the problem disappeared. $ stty -F /dev/ttyACM0 speed 57600 baud; line = 0; eof = ^A; min = 1; time = 0; -brkint -icrnl -imaxbel -opost -onlcr -icanon -echo -echoe -- You received this bug notification because you are a member

[Kernel-packages] [Bug 1931684] Re: cdc_acm: acm_port_activate - usb_submit_urb(ctrl irq) failed

excerpt from /var/log/apt/history.log: Update from 73 to 74: Commandline: aptdaemon role='role-commit-packages' sender=':1.165' Install: linux-image-5.4.0-74-generic:amd64 (5.4.0-74.83, automatic),... Update firmware/microcode: Commandline: aptdaemon role='role-commit-packages' sender=':1.173' Up

[Kernel-packages] [Bug 1931684] Re: cdc_acm: acm_port_activate - usb_submit_urb(ctrl irq) failed

Im using Ubuntu 20.04 LTS and have the same problem. I got the problem after upgrading from Kernel 5.4.0-73-generic to 5.4.0-74-generic. As I got in addition a firmware/microcode update it may be possible that the error is adjacent to that update too. If I boot to kernel 5.4.0-73-generic I have

[Kernel-packages] [Bug 1909494] Re: wpa_supplicant and iwlwifi failing with "No buffer space available" since "kernel 5.4.0-56"

** Changed in: linux-meta (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-meta in Ubuntu. https://bugs.launchpad.net/bugs/1909494 Title: wpa_supplicant and iwlwifi failing with "No buffer s