[Bug 16336] i915 crashes when loading X.org server with vesa driver

[Bug 16336] i915 crashes when loading X.org server with vesa driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16336


Chris Wilson <chris@chris-wilson.co.uk> changed:

           What    |Removed                     |Added
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                 CC|                            |chris@chris-wilson.co.uk




--- Comment #1 from Chris Wilson <chris@chris-wilson.co.uk>  2010-07-04 12:33:16 ---
You have two drivers conflicting over control of the same hardware. Don't do
that.

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[Bug 16336] i915 crashes when loading X.org server with vesa driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16336





--- Comment #2 from Artem S. Tashkinov <t.artem@mailcity.com>  2010-07-04 14:32:39 ---
X.org server trying to run using Vesa shouldn't crash my computer and it
happens now. I could be happy if kernel just said "Resource or device is busy"
without wrecking havoc.

(As a side not I wonder why it's possible (and it perfectly works) to run
proprietary NVIDIA X.org server and Vesa X.org server at the same time).

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[Bug 16336] i915 crashes when loading X.org server with vesa driver

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16336


Jesse Barnes <jbarnes@virtuousgeek.org> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|                            |WILL_NOT_FIX




--- Comment #3 from Jesse Barnes <jbarnes@virtuousgeek.org>  2010-07-23 19:38:26 ---
The kernel has no way of doing this right now.  A suitably privileged X server
can open /dev/mem or any of the sysfs resource files and start poking
regsiters.

The reason NV and VESA work together is that the NV driver isn't a kernel mode
driver, when you switch between servers in that config the whole hardware state
is saved and restored, whereas in the i915 case, the i915 driver expects to be
in sole control of the hw once it loads.

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