Bug#776911: gnome-shell: fails to start on i386 when [Mesa was] built with llvm-3.5

[Julien Cristau]

On Thu, Feb 26, 2015 at 08:54:10 +0000, Simon McVittie wrote:

> Adding mesa at packages to Cc since I suspect #775235 needs reassigning
> to Mesa, perhaps along with its merged bugs #770130, #776911.
> 
> Context for Mesa maintainers: #775235 is that gnome-shell crashes in
> an i386 VM with its default choice of emulated CPU, with
> "LLVM ERROR: Do not know how to split the result of this operator!".
> See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775235#10 for full
> backtrace.
> 
> The merged bug #770130 is that gnome-shell crashes on an unknown i386
> (probably relatively old, since it has 82830M/MG integrated graphics,
> which Wikipedia says is a Pentium III-M chipset) with
> "Cogl-ERROR **: Failed to create texture 2d due to size/format constraints".
> Oddly, this only happens for non-power-of-two textures in the gnome-shell
> run by the actual user, not by the gnome-shell used for the gdm login
> prompt (even though both use non-power-of-two textures). Michael Gilbert
> merged this with #775235 and #776911 without comment; I'm not sure of
> the reasoning for believing that #775235 and #770130 is the same thing.
> 
> The other merged bug #776911 is that gnome-shell crashes on an
> unknown i386 with "Cogl-ERROR **: Failed to create texture 2d due to
> size/format constraints"; that looks like the same thing as #770130.
> 
Sounds like there are at least two different issues that should be
split...

Cheers,
Julien
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