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CentOS 7 3D acceleration -- slow

Posted: 26. Jul 2014, 21:12
by poncho524
I have reasons to believe 3D acceleration in a CentOS 7 guest is still being via software rendering.

gnome-shell takes up a ton of CPU via 'top', moving windows around on the desktop is chuncky.

I'm using VB 4.3.12 because 4.3.14 is broken. But I did use the 4.3.14 guest additions.

Anyone else seeing this? Anyone have a solution?

Also, running 'glxgears' will display the gears, but will hang X. the only way to get it to recover is to Cntrl-Alt-F2 and pkill glxgears.

Can anyone confirm glxgears breaking things?

Re: CentOS 7 3D acceleration -- slow

Posted: 26. Jul 2014, 21:17
by loukingjr
If you are using a Windows host you will have to wait for a new version. If you are using a Linux or Mac host, 4.3.14 works fine.

Re: CentOS 7 3D acceleration -- slow

Posted: 26. Jul 2014, 21:26
by loukingjr
btw: if the gears turn 3D is working or if you run

Code: Select all

glxinfo | grep OpenGL
and in the results it says "Chromium", 3D is working.

Re: CentOS 7 3D acceleration -- slow

Posted: 26. Jul 2014, 22:29
by poncho524
loukingjr wrote:btw: if the gears turn 3D is working or if you run

Code: Select all

glxinfo | grep OpenGL
and in the results it says "Chromium", 3D is working.
It sorta works. The gears display, without window decoration, and the X server freezes. This is not normal behavior... and i wouldn't call that "working"

Re: CentOS 7 3D acceleration -- slow

Posted: 26. Jul 2014, 23:14
by loukingjr
poncho524 wrote:
loukingjr wrote:btw: if the gears turn 3D is working or if you run

Code: Select all

glxinfo | grep OpenGL
and in the results it says "Chromium", 3D is working.
It sorta works. The gears display, without window decoration, and the X server freezes. This is not normal behavior... and i wouldn't call that "working"
I actually said "turn" not just display. which is why I included the other command to try. My understanding was one needed both VB 4.3.14 and the matching guest additions for CentOS 7 to work correctly and the guest additions to build correctly. I don't normally run CentOS anything but I installed it as a guest a couple of weeks ago to see if it worked. It worked fine for me even with 4.3.14 RC1.

Re: CentOS 7 3D acceleration -- slow

Posted: 27. Jul 2014, 20:10
by poncho524
loukingjr wrote:I actually said "turn" not just display. which is why I included the other command to try. My understanding was one needed both VB 4.3.14 and the matching guest additions for CentOS 7 to work correctly and the guest additions to build correctly. I don't normally run CentOS anything but I installed it as a guest a couple of weeks ago to see if it worked. It worked fine for me even with 4.3.14 RC1.
Yes, it displays and turns. I would try 4.3.14 if it wasn't a big pile of broken. I'll wait to see if the next release works and give it a try again.

And 'glxinfo' does show 'Chromium'. But it still causes X to freeze.

I'll wait and try 4.3.16 and see what happens.

Re: CentOS 7 3D acceleration -- slow

Posted: 27. Jul 2014, 21:40
by loukingjr
If you have a Windows host, I would wait as well. Seems fine on Mac and Linux hosts.