Join Log in
Score:2
silverthorne avatar Ubuntu

Microstuttering (mouse/keyboard) after upgrading to 21.10

cn flag
silverthorne

Recently, I upgraded my Ubuntu 21.04 to 21.10.

Since then, I sometimes experience micro stuttering for both mouse and keyboard - sometimes the cursor lags for a fraction of a second, or a typed symbol appears with a little delay.

Dmesg is full of messages like these:

[43100.097065] usb 1-5: restoring control 00000000-0000-0000-0000-000000000101/10/5
[43100.097069] usb 1-5: restoring control 00000000-0000-0000-0000-000000000101/12/11
[43103.360541] usb 1-5: reset high-speed USB device number 4 using xhci_hcd

I figured out it is due to the Logitech webcam in the system (if I disconnect the dmesg flood stops, however, the micro stuttering remains).

Other than that, only these

[43210.076621] audit: type=1400 audit(1637700764.751:78): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/sys/kernel/osrelease" pid=1040 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[43210.076650] audit: type=1400 audit(1637700764.751:79): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/1/environ" pid=1040 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[43210.076678] audit: type=1400 audit(1637700764.751:80): apparmor="DENIED" operation="open" profile="/usr/sbin/cupsd" name="/proc/cmdline" pid=1040 comm="cupsd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

But I am not sure that it is related. Nothing else.

All packages are the latest. I tried both the latest repo kernel (5.13.0.21.32) and the latest mainline kernel (5.15.4) - it is the same on both.

My hardware:

  • Ryzen 5950X
  • 64Gb RAM
  • MSI X570 Tomahawk
  • Radeon RX6700XT

I running the open-source amdgpu driver and Gnome on Wayland with 2x144hz monitors.

Any help is highly appreciated. Cheers.

116
0 + 0
usb
becko avatar
jp flag
becko
Related: https://www.reddit.com/r/linuxquestions/comments/tdqm9q/ubuntu_2004_strange_microstuttering/
0
Reply
Score:1
silverthorne avatar Ubuntu
cn flag
silverthorne

The issue disappeared after I switched back to X11...

sudo nano /etc/gdm3/custom.conf

and uncommented

WaylandEnable=false

After that

sudo service gdm restart

login to Ubuntu or Gnome session, and verify that the session is X11 indeed

echo $XDG_SESSION_TYPE                                                      
x11

in my case, I also had to remove the old xorg.conf

sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.old

and just in case I put the following file with xorg.conf overrides:

cat /etc/X11/xorg.conf.d/20-amdgpu.conf                                     

Section "Device"
    Identifier "AMD"
    Driver "amdgpu"
    Option "TearFree" "true"
EndSection
0 + 0
ธงชาติไทย
Elon Musk
I sit in a Tesla and translated this thread with Ai:

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.