3D Acceleration ok, but OpenGL slow

hansidm · 08-24-2005, 05:22 AM

Hello all,

I'm having some troubles with my ATI Radeon card.

I have installed the latest drivers from linuxpackages.net. glxinfo tells me that Direct Rendering is enabled. glxgears gives me 2000+fps, but the KDE OpenGL screensavers are really slow. 1fps or less.

Does someone have any clue?

Thanks.

satinet · 08-24-2005, 07:18 AM

what about a look at your xorg.conf file??

Spectre630 · 08-24-2005, 07:27 AM

I've just fixed a similar problem to this myself within the past 24 hours.

Here's what I did:

1) I installed this (Slackware repackaged) version of the drivers: http://www.linuxpackages.net/download.php?id=7254

2) and being sure to add the following line to fstab (which was never mentioned anywhere by ATI):
tmpfs /dev/shm tmpfs defaults 0 0

I got this info from the Slackware FAQ:
http://wiki.linuxquestions.org/wiki/...ary_drivers.3F

(For what it's worth, I don't know if the drivers or the fstab line really did the trick, but after doing those and rebooting, things finally worked).

hansidm · 08-24-2005, 08:08 AM

Quote:

Originally posted by Spectre630
[B]
1) I installed this (Slackware repackaged) version of the drivers: http://www.linuxpackages.net/download.php?id=7254

2) and being sure to add the following line to fstab (which was never mentioned anywhere by ATI):
tmpfs /dev/shm tmpfs defaults 0 0

Thanks. Step number 1 I've already done. Step 2 I'm going to try it today.

I'll post here if it works.

I had a look in xorg.conf but it looks good to me. Loads dri and glx.

fcaraballo · 08-24-2005, 11:16 AM

Quote:

Originally posted by Spectre630
which was never mentioned anywhere by ATI

ATI Proprietary Linux Release Notes

Quote:

3D Applications Produce Open of Shared Memory Object Failed Error Message

This information applies to the following system configurations:

* ATI Proprietary Linux Driver version 3.14.6 and later

The following may occur when trying to run certain 3D applications:

* 3D image appears corrupt or blank
* Missing textures
* System performance drops sharply

The following error message may also appear numerous verdana:

FGLTexMgr: open of shared memory object failed (Function not implemented) __FGLTexMgrCreateObject: __FGLTexMgrSHMmalloc failed! fglX11AllocateManagedSurface: __FGLTexMgrCreateObject failed!

The display driver requires POSIX Shared Memory to be enabled on the system in order to run these applications correctly. This feature should be enabled by default on most current Linux distributions, but may be disabled intentionally by some system administrators or not included in older distributions.

To enable POSIX Shared Memory on your system, perform the following as root:

1. Add the following line to /etc/fstab (if it isn't there already): tmpfs /dev/shm tmpfs defaults 0 0
2. Mount shared memory as follows: mount /dev/shm
3. Issue the following command to check that it mounted properly: mount | grep "shm"

If the mount was successful, then the following output (or similar) should appear:
tmpfs on /dev/shm type tmpfs (rw)

At this point, POSIX Shared Memory is enabled. Your 3D applications should run properly and the error message above should no longer occur.

If the output from this command is blank, then the mount failed.

If /dev/shm fails to mount, then this feature may not be turned on in your Linux kernel. In this case we recommend upgrading to a more recent Linux kernel, or contacting your Linux Distribution vendor for more information on enabling POSIX Shared Memory.

For further information and general help on driver or software installation, game issues, and more, visit the ATI FAQ website.

Spectre630 · 08-24-2005, 11:19 AM

hehe, fiiiine. But their install information/quick guide doesn't say anything about it.

hansidm · 08-24-2005, 03:53 PM

It worked perfectly adding these lines to fstab. Finally smoothy OpenGL

Thanks everybody.