You have been subscribed to a public bug: This problem happens with 64-bit 20.04 LTS or 20.10 on a Raspberry Pi 4 w/4GB (I am using the official Ubuntu Pi versions). It does NOT happen with either version when running on a standard x86 machine or VM. Also, it does NOT happen when using the 64-bit Raspberry Pi OS (https://downloads.raspberrypi.org/raspios_arm64/images/). So this issue is specific to the official 64-bit Ubuntu on Raspberry Pi version.
When a 100us timer is started (via setitimer) the app will spin at 100%. With values slightly higher (150, 200, 1000) this does not happen. I've included the source for a small timer test program that I found reproduces the issue that broke my larger formal app. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- Timer of 100us causes 64-bit app spin on Pi4 https://bugs.launchpad.net/bugs/1925026 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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