- I have an hi-end laptop with latest i7 CPU, RAM 64GB, hi-end GPU , I use to develop CUDA applications, I installed Ubuntu 22 LTS and all went (almost well ) for a time; - Days ago, I did a full upgrade of OS (upgrade + dist-upgrade);
- A very annoying glitch appeared : interacting "remotely" from my other laptop ( both machines are in my home ) using a terminal via OpenSSH ( and directly on the machine, as I tested subsequently to exclude networking problems ), when I stroke on the keyboard, I saw the feedback on the screen with a lag of 1 to 2+ seconds ;
- After some research I found some posts in Ubuntu forum telling us that the problem is due to a broken mutter package that, for some reasons, gained its way to the "production" repository of 22 LTS, i.e., see here:
https://askubuntu.com/questions/1509058/input-delay-on-terminal-ubuntu-22-04-4
- Mutter is a X11/Wayland composer;
- I found that very odd, because I was interacting with an OpenSSH session opened without -X or -Y, a plain SSH session to have a VIM instance on the remote machine;
- To do a test ( maybe that wasn't the reason of my problem ), I uninstalled the whole graphical environment ( gnome, mutter and everything related) and ... the problem DISAPPEARED so empirically that was the effectively the cause;
- Under the light of what happened with libXZ, I found that alarming: why TTYs should depend from X/Wayland libraries ?
- At that point I didn't reinstalled Mutter and the standard windows manager, opting for Mate, that works flawlessly and, more important, do not have the TTYs problems (anyway, Mate guys, I disabled screensaver , it uses a fix 25% of an high end NVIDIA card to render 4 objects on the screen ... );
- About Ubuntu, instead of unofficial workaround asking to update from testing repos, why do not REVERT back the faulty packages ??? Instead to propose this workarounds or asking to wait a month or more, living with this problem ?
- Let me know what you think.
