After new patch sys-usb started to malfunction - reattaching usb (mouse or keyboard) - makes sys-usb working very slow, 50% cpu system load and mouse and keyboard lags.
Might be related to this issue
opened 04:04PM - 14 May 20 UTC
T: bug
P: default
hardware support
C: usb proxy
needs diagnosis
affects-4.1
**Qubes OS version**
R4.0
**Affected component(s) or functionality**
USB de… vice handeling
**Brief summary**
Rarely (~ once a month), the system become extremely slow, and mouse/keyboard are extremly laggy.
Looking at CPU consumption it come from the usb qube ("sys-usb" in my case), consuming over 50% of total CPU (Probably eating everything it is allowed to).
When I look at the process list, the issue is "kworker/*:*events".
The journal logs are filled with the same message: "hid-generic XXXXXXX: control queue full"
My "sys-usb" qube is a static disposableVM based on Debian 10 ( and currently using kernel 5.6.11-1 but it is not related to kernel version since I got the same issue months ago when this kernel version didn't existed yet).
The issue is not related to plugging or unplugging USB devices.
**To Reproduce**
No idea
**Solutions you've tried**
Restarting the "sys-usb" qube. Problem is gone after that.
**Relevant [documentation](https://www.qubes-os.org/doc/) you've consulted**
None
Found this error referenced on the archlinux documentation: https://wiki.archlinux.org/index.php/APC_UPS
And on gentoo forum: https://forums.gentoo.org/viewtopic-p-7569028.html
**Related, [non-duplicate](https://www.qubes-os.org/doc/reporting-bugs/#new-issues-should-not-be-duplicates-of-existing-issues) issues**
None
1 Like
Yes, seems to be it. But it was working okay during long time. And only 1-2 weeks ago it appeared. No hardware changes. I guess after major update of 4.2
