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[Philip Greer <1787857@xxxxxxxxxxxxxxxxxx>]

I'm seeing this as well with Ubuntu 19.10, uname -a:

Linux Asus 5.3.0-19-generic #20-Ubuntu SMP Fri Oct 18 09:04:39 UTC 2019
x86_64 x86_64 x86_64 GNU/Linux

Tried both usb3 and usb2 ports, on and off an (externally powered) USB
hub. Strangely, a wireless mouse works - with the usb thumb in the same
port that my wired mouse was not working on....

Has anyone tried compiling their own custom kernel and this becomes
resolved? Or still the same issue (as the code base is the same)?

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https://bugs.launchpad.net/bugs/1787857

Title:
  USB mouse cursor lags after random time of correct behaviour

Status in linux package in Ubuntu:
  Confirmed
Status in rtirq package in Ubuntu:
  Invalid

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

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