Fedora 15 3D Accelerated Video

[D. Hugh Redelmeier]

| From: Howard Gibson <hgibson-MwcKTmeKVNQ at public.gmane.org>

|    I have just installed Fedora 15 on my desktop, and my video 3D 
|    acceleration has shut off.  This disables a number of things, 
|    including Gnome_3.  If there was ever a good case against 3D 
|    accelerated user interfaces, this is it.

I assume that you mean that it disables Gnome 3 desktop shell.  Gnome
3 itself must still be going.  Fedora 15 has a fallback shell for
systems without 3D hardware support.

Could you be more explicit about what you observe?  What stopped
working?  What do you mean by "shut off" -- did your system freeze?

Many people dislike the Gnome 3 shell and think that the fallback is
better.  I've been using the Gnome 3 shell and Fedora 15 for a couple
of months and am not sure that it is a Good Thing.

|    The 3D video worked at first.

What caused it to break?  Was it applying updates?

I guess I should refine the above question.  If you knew what caused
it to break, you'd fix it.  What salient events preceded the breakage?

Have you applied all the Fedora 15 updates (there are a lot, and they
keep on coming)?  I'm a firm believer in applying all distro-supplied
updates (despite all the scars I've gotten from doing so).

In what sense did it break?  I infer that hardware acceleration stopped
happening.  I imagine that 3D still works through OpenGL software but
is slow (but I don't know that).

|  Then, Gnome_3 stopped working.

I presume that you mean that the Gnome 3 desktop shell stopped
working.

|    Does anybody know how I can get into video configuration for 
|    Fedora_15?

I assume you mean one that uses 3D hardware acceleration.

| TLUG requests: Linux topics, No HTML, wrap text below 80 columns

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| From: Howard Gibson <hgibson-MwcKTmeKVNQ at public.gmane.org>

| On Fri, 4 Nov 2011 21:41:49 -0400
| Neil Watson <tlug-neil-8agRmHhQ+n2CxnSzwYWP7Q at public.gmane.org> wrote:
| 
| > What video card are you using?
| 
|     I have an Asus P5GC-MS/1333 motherboard with the video built into 
|     it.  It worked fine with FC12.  It worked fine just after I 
|     installed Fedora_15.

You didn't actually answer the question.  But you did provide enough
information that one can google to find the answer: The Intel 945GC
graphics memory controller hub(GMCH)
(<http://www.asus.com/Motherboards/Intel_Socket_775/P5GCMX1333/>)

I think (but don't know for sure) that Intel GMA support is pretty
solid now.  It went through a soft patch a while ago.  In general,
Intel has been the best supported graphics hardware under Linux even
though it is the weakest.

| From: Russell Reiter <rreiter91-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>

| You may have to disable Kernel Mode Setting, or XV or update the
| driver. Have a look at this, see if it helps.
| 
| http://www.thinkwiki.org/wiki/Intel_Graphics_Media_Accelerator_950
| 
| >From the site:
| 
|   Disabling KMS
| 
| If KMS causes you problems, you can disable it and return to user mode
| setting (UMS) by booting with the nomodeset kernel boot option. Note
| that this is no longer an option starting with version 2.10 of the
| Intel Xorg driver as UMS support has been dropped.

I don't imagine that he is having trouble with KMS, but who knows.

- KMS has settled down a bunch in the last few years.

- I think that KMS problem symptoms are more severe than I infer
  Howard is experiencing

Good luck!  Sorry I haven't actually got a solution for you.
--
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