[Pkg-fglrx-devel] Bug#683853: fglrx-driver: 32bit OpenGL applications don't work on amd64

[Andreas Beckmann]

On 2012-08-05 10:06, Vsevolod Kozlov wrote:
> The multilib packages install libraries in /usr/lib/i386-linux-gnu, as opposed
> to /usr/lib32, so the problem is that 32-bit programs don't go looking there.

that shouldn't be a problem if ld is configured correctly

> As a workaround, one can symlink
> /usr/lib/i386-linux-gnu/fglrx/fglrx-libGL.so.1.2 to /usr/lib32/libGL.so.1 and
> /usr/lib/i386-linux-gnu/dri/fglrx_dri.so to /usr/lib32/dri/fglrx_dri.so.

if that *really* helps, we have some seriously broken 32bit binaries -
how are they supposed to run on i386 properly?

> But I suppose the real solution would be to build the 32-bit programs properly.

Do you have some trivial example to test? Ideally something that can be
installed from the repository, i.e. something:amd64 and something:i386
(although the binaries won't be co-installable at the same time).


On 2012-08-04 22:04, Jason Morawski wrote:
> I'm not sure if this is a bug or a setup issue, but I am unable to run
> applications that use 32bit OpenGL libraries. This problem began after
> upgrading to fglrx-driver (1:12-6+point-1)
> 
> I installed the multiarch library packages for libfglrx:i386 and
> libgl1-fglrx-glx:i386 thinking that it would resolve my issue, but it
> did not. My problem still persists.

do you have ia32-libs installed?
if possible, remove it
if not, move /usr/lib32/libGL.so* away (and out of any library search path)

> After doing some searching, I found bug #614805 which states:

that is about an outdated libGL.so.1 in ia32-libs

> "32 bit applications that use libgl1 don't work. libgl1 searches in
> /usr/lib/dri but it has to search in /usr/lib32/dri. The effect is no 3d

libgl1-fglrx-glx has the libGL.so.1 patched to search in
/usr/lib/<triplet>/dri, too, so this shouldn't be an issue any more

> Even though the bug says that FGLRX is not affected, it seems that I am
> experiencing the same issue with applications being unable to load the
> 32bit OpenGL libraries. Perhaps someone can shed some light on this. I

I'm afraid, you were using the MESA libGL.so.1 in /usr/lib32 instead of
the FGLRX one in /usr/lib/<i386-triplet>

> glxinfo did not mention anything regarding 32bit glx.

I was more thinking about comparing the output from glxinfo from
mesa-utils:amd64 and mesa-utils:i386 (note: you can only install one of
these packages at a time)

Looks like we need to add either
  Breaks: ia32-libs (<< 20120701)
or somehow reinstate the diversions of /usr/lib32/libGL.so* (which have
been removed by the removal/upgrade of the libgl1-fglrx-glx-ia32 package)


Andreas