Google MapsGL causing X crashes on machines with Sandybridge graphics

Google MapsGL causing X crashes on machines with Sandybridge graphics

[Eric Appleman]

It's a known issue, but I've yet to find a comprehensive explanation for what's
going on.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=44108
[2] https://bugs.freedesktop.org/show_bug.cgi?id=45806

Re: Google MapsGL causing X crashes on machines with Sandybridge graphics

[Chris Wilson]

On Thu, 12 Apr 2012 19:34:12 +0000 (UTC), Eric Appleman <erappleman@gmail.com> wrote:
> It's a known issue, but I've yet to find a comprehensive explanation for what's
> going on.

What X crash? The bugs show a GPU hang. X itself should remain stable
through such a catastrophe and revert to software rendering (if the GPU
becomes wedged). If you have an instance where X itself fails, please do
let me know.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

Re: Google MapsGL causing X crashes on machines with Sandybridge graphics

[Keith Packard]

<#part sign=pgpmime>
On Thu, 12 Apr 2012 19:34:12 +0000 (UTC), Eric Appleman <erappleman@gmail.com> wrote:

> It's a known issue, but I've yet to find a comprehensive explanation for what's
> going on.

Appears to be caused by the Hi-Z code. No known solution at this
point, aside from disabling Hi-Z. Here's a script that I use to launch
google-earth with Hi-Z disabled (and enough core fonts to make the
broken Qt version included work):

#!/bin/sh
export INTEL_HIZ=0
MISCFONTS=/usr/share/fonts/X11/misc
if xset q | grep -q "$MISCFONTS"; then
	echo 'fonts already present'
else
	xset fp+ /usr/share/fonts/X11/misc
fi
/usr/bin/google-earth "$@"


-- 
keith.packard@intel.com