[Bug 82864] [HSW i915 MSI-7817] S4 resume on Haswell causes memory corruption (OOM, ext4_, ...)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82864

--- Comment #15 from Imre Deak <imre.deak at intel.com> ---
(In reply to Jens from comment #14)
> Summary:
> 
> 1)
> I could not reproduce the above corruption error with "nomodeset" and only
> using the console (no X) after about 10 suspend/resume cycles during a
> parallel make -j4.
> 
> 2)
> Upon restarting lightdm and logging in, this is printed to the console when
> using "nomodeset":
> [+21.57s] WARNING: Error activating login1 session:
> GDBus.Error:org.freedesktop.DBus.Error.Failed: Operation not supported
> 
> I do not get this when not using this boot parameter.
> 
> Full boot command line: BOOT_IMAGE=/vmlinuz-3.18.0-rc1+
> root=/dev/mapper/ubuntu--vg-root ro quiet splash no_console_suspend=1
> netconsole=6666 at 192.168.178.59/eth0,6666 at 192.168.178.62/
> crashkernel=384M-:128M vt.handoff=7
> 
> 3)
> After console freezes, there is nothing strange in the logs (at least no
> backtrace, oops or anything obvious.)

Ok. Atm, I'm without much ideas what can cause this, I'll try to reproduce it
on my Haswell here. One more thing, is i915 built-in or module for you? We end
up with a different resume sequence in the two cases, so trying if you can
reproduce the bug with both ways could be useful.

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