[Bug 64841] Linux hangs when suspending to disk

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=64841

Ben Widawsky <ben at bwidawsk.net> changed:

           What    |Removed                     |Added
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                 CC|                            |ben at bwidawsk.net

--- Comment #6 from Ben Widawsky <ben at bwidawsk.net> ---
I guess this provides further evidence that the GPU is not behaving. Which, see
#1, makes me wonder if a revert is even the correct solution.

A few questions:

1. Prior to this patch, had you ever seen any corruption? Are you sure? Can you
confirm this with slub debugging, or some other way? One risk to simply
disabling this workaround is that it can prevent real memory corruption.

2. Can you enable drm.debug=0xe, and using netconsole or some other mechanism
try to collect all messages after the hang?

3. What is the actual PCI ID of gfx, 0:2.0?

4. Is s3 effected?

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