Graphic buffer problem

[gusl]

My Fedora screen has marks. The buffer isn't cleaning up after itself, and there are marks of things that should have disappeared many minutes ago. This makes it very hard for me to change desktops, and even changing windows is quite slow. Mouse pointer movement is also annoyingly slow.

Is there some process I need to give higher priority?
Any tips?

Comments

[smandal.livejournal.com]

Some ideas:

* Driver is flaky

* Glitch -- reboot

* You have the wrong video card settings -- refresh frequency might be too high, for example.

[fare.livejournal.com]

If everything is too slow, you might have some process eating up all the memory. Use limit and/or ulimit to control it before it goes wild, and/or use nice to give it low priority.

If your X driver itself is buggy, try such things as disabling various hardware accelerations in your xorg.conf (or XF86Config-4 if you still use that) and/or enable cacheing of window buffers (so they don't have to redraw), etc.

[gustavolacerda.livejournal.com]

Thanks!

I think only graphic things are too slow. sbcl and latexpdf run fine.

I looked at my XF86Config... and caching is not disabled (FWIU it's default). So I just added Option "NoAccel" to the "Device" section. I imagine I'll have to reboot before I see any changes.

I don't see why we aren't allowed to reboot just the video. This is also a general complaint I have against the practice of always having to reboot.

[fare.livejournal.com]

You ARE allowed to reboot just the video. Just quit your current session, it should launch a new X server.

Presumably, your card may have some finer grained controls than a plain "NoAccel", that will only disable the buggy stuff while keeping the good things.