Qubes 4.3 possible lags after updating from 4.2

User Support
1

I don’t quite understand what the problem is, but after a clean installation of Qubes 4.3, I noticed some minor lag (if you can call it that). To be more specific, everything started to resemble a slideshow, i.e., it’s not that everything is lagging/slideshowing badly, but I noticed it, it’s as if I have 50 fps (if I were playing a game). Movements became less smooth (mouse and some messengers - like Telegram) — it really reminds me of low fps in a game. What could be the problem?

I am using Purism Librem 14
CPU: Intel Core I7-10710U CPU @ 1.10GHz
Chipset: Intel Corporation 10th Gen Core Processor Host Bridges/DRAM Registers
Graphics: Intel Corporation Comet Lake UHD Graphics
RAM: 24450 MB
BIOS: 4.14-Purism-1
Xen: 4.19.3

Linux kernel: 6.12.59-1.

2

Also, when I switch between windows (workspace), my messenger window pops up in front of my face and lags (as if I’m not on a virtual machine, but as logging into RDP and working from Whonix, i.e., it looks like some kind of graphics problem after the update, but I don’t understand what the specific problem is. This never happened with the previous version, and everything was fine.

3

I also noticed a problem when I use the terminal by connecting to the server, it sometimes lags, that is, the text is displayed with a delay. The same with the text, for example, I select the text with the mouse and drag over it and see a delay, also a delay when typing text in instant messengers, I clearly see how slowly it prints

4

There is a new input delay (Keycloak like) for whonix that seems to also include some part of the graphical events coming from the qube.

If you run this command in dom0, you will see a gui-events-max-delay entry:

qvm-features whonix-workstation-18-dvm

Instead, try setting the value to 0:

qvm-features whonix-workstation-18-dvm gui-events-max-delay 0

If you use preloaded qubes, make sure to create a new one for testing, since the previous value will still be present in preloaded ones.

2 Likes
5

You’re a genius! Thank you.