It is an kernel issue. I tested with all 4.15.* kernels available in the ubuntu repo, but only upgrading the kernel to 4.16.0-041600-lowlatency from [1] solved all issues.
don't have time to test other distros, sorry how can I help now? [1] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/ -- You received this bug notification because you are a member of Ubuntu Studio Bugs, which is subscribed to The Ubuntu Studio Project. Matching subscriptions: UbuntuStudio Bugs https://bugs.launchpad.net/bugs/1787857 Title: USB mouse cursor lags after random time of correct behaviour Status in Ubuntu Studio: Incomplete Bug description: I installed Ubuntu Studio 18.04.1 LTS. After the first apt-get update I noticed the following behaviour: after havig logged in, my USB mouse works normally for about ten seconds, then the cursor starts lagging a lot which makes the mouse pretty much unusable. The last dmesg always contain lines these: (more in attached file) [<000000009e659b0c>] irq_default_primary_handler threaded [<00000000fa56edac>] usb_hcd_irq [<000000009e659b0c>] irq_default_primary_handler threaded [<00000000fe1afb05>] _rtl_pci_interrupt [rtl_pci] Disabling IRQ #18 Out of frustration & curiosity I disabled most autostart apps (Settings > Session ... > Autostart) and re-enabled them after rebooting. Since then I rarely encounter the lagging cursor. If I open Settings > Mouse & Touchpad and toggle any option on/off the cursor starts lagging. How can make the cursor work reliably? Some comment in dmesg mentions "irqpoll" boot option Ubuntu Studio 18.04.1 4.15.0-20-lowlatency #21-Ubuntu SMP PREEMPT To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntustudio/+bug/1787857/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp
